Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
"Various driver updates for platforms:

- Nvidia: Fuse support for Tegra194, continued memory controller
pieces for Tegra30

- NXP/FSL: Refactorings of QuickEngine drivers to support
ARM/ARM64/PPC

- NXP/FSL: i.MX8MP SoC driver pieces

- TI Keystone: ring accelerator driver

- Qualcomm: SCM driver cleanup/refactoring + support for new SoCs.

- Xilinx ZynqMP: feature checking interface for firmware. Mailbox
communication for power management

- Overall support patch set for cpuidle on more complex hierarchies
(PSCI-based)

and misc cleanups, refactorings of Marvell, TI, other platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (166 commits)
drivers: soc: xilinx: Use mailbox IPI callback
dt-bindings: power: reset: xilinx: Add bindings for ipi mailbox
drivers: soc: ti: knav_qmss_queue: Pass lockdep expression to RCU lists
MAINTAINERS: Add brcmstb PCIe controller entry
soc/tegra: fuse: Unmap registers once they are not needed anymore
soc/tegra: fuse: Correct straps' address for older Tegra124 device trees
soc/tegra: fuse: Warn if straps are not ready
soc/tegra: fuse: Cache values of straps and Chip ID registers
memory: tegra30-emc: Correct error message for timed out auto calibration
memory: tegra30-emc: Firm up hardware programming sequence
memory: tegra30-emc: Firm up suspend/resume sequence
soc/tegra: regulators: Do nothing if voltage is unchanged
memory: tegra: Correct reset value of xusb_hostr
soc/tegra: fuse: Add APB DMA dependency for Tegra20
bus: tegra-aconnect: Remove PM_CLK dependency
dt-bindings: mediatek: add MT6765 power dt-bindings
soc: mediatek: cmdq: delete not used define
memory: tegra: Add support for the Tegra194 memory controller
memory: tegra: Only include support for enabled SoCs
memory: tegra: Support DVFS on Tegra186 and later
...

Documentation/devicetree/bindings/arm/cpus.yaml

···
 
       where voltage is in V, frequency is in MHz.
 
+  power-domains:
+    $ref: '/schemas/types.yaml#/definitions/phandle-array'
+    description:
+      List of phandles and PM domain specifiers, as defined by bindings of the
+      PM domain provider (see also ../power_domain.txt).
+
+  power-domain-names:
+    $ref: '/schemas/types.yaml#/definitions/string-array'
+    description:
+      A list of power domain name strings sorted in the same order as the
+      power-domains property.
+
+      For PSCI based platforms, the name corresponding to the index of the PSCI
+      PM domain provider, must be "psci".
+
   qcom,saw:
     $ref: '/schemas/types.yaml#/definitions/phandle'
     description: |

Documentation/devicetree/bindings/arm/msm/qcom,llcc.yaml

···
   - |
     #include <dt-bindings/interrupt-controller/arm-gic.h>
 
-    cache-controller@1100000 {
+    system-cache-controller@1100000 {
       compatible = "qcom,sdm845-llcc";
       reg = <0x1100000 0x200000>, <0x1300000 0x50000> ;
       reg-names = "llcc_base", "llcc_broadcast_base";

Documentation/devicetree/bindings/arm/psci.yaml

···
       [1] Kernel documentation - ARM idle states bindings
         Documentation/devicetree/bindings/arm/idle-states.txt
 
+  "#power-domain-cells":
+    description:
+      The number of cells in a PM domain specifier as per binding in [3].
+      Must be 0 as to represent a single PM domain.
+
+      ARM systems can have multiple cores, sometimes in an hierarchical
+      arrangement. This often, but not always, maps directly to the processor
+      power topology of the system. Individual nodes in a topology have their
+      own specific power states and can be better represented hierarchically.
+
+      For these cases, the definitions of the idle states for the CPUs and the
+      CPU topology, must conform to the binding in [3]. The idle states
+      themselves must conform to the binding in [4] and must specify the
+      arm,psci-suspend-param property.
+
+      It should also be noted that, in PSCI firmware v1.0 the OS-Initiated
+      (OSI) CPU suspend mode is introduced. Using a hierarchical representation
+      helps to implement support for OSI mode and OS implementations may choose
+      to mandate it.
+
+      [3] Documentation/devicetree/bindings/power/power_domain.txt
+      [4] Documentation/devicetree/bindings/power/domain-idle-state.txt
+
+  power-domains:
+    $ref: '/schemas/types.yaml#/definitions/phandle-array'
+    description:
+      List of phandles and PM domain specifiers, as defined by bindings of the
+      PM domain provider.
 
 required:
   - compatible
···
 
       cpu_on = <0x95c10002>;
       cpu_off = <0x95c10001>;
+    };
+
+  - |+
+
+    // Case 4: CPUs and CPU idle states described using the hierarchical model.
+
+    cpus {
+      #size-cells = <0>;
+      #address-cells = <1>;
+
+      CPU0: cpu@0 {
+        device_type = "cpu";
+        compatible = "arm,cortex-a53", "arm,armv8";
+        reg = <0x0>;
+        enable-method = "psci";
+        power-domains = <&CPU_PD0>;
+        power-domain-names = "psci";
+      };
+
+      CPU1: cpu@1 {
+        device_type = "cpu";
+        compatible = "arm,cortex-a57", "arm,armv8";
+        reg = <0x100>;
+        enable-method = "psci";
+        power-domains = <&CPU_PD1>;
+        power-domain-names = "psci";
+      };
+
+      idle-states {
+
+        CPU_PWRDN: cpu-power-down {
+          compatible = "arm,idle-state";
+          arm,psci-suspend-param = <0x0000001>;
+          entry-latency-us = <10>;
+          exit-latency-us = <10>;
+          min-residency-us = <100>;
+        };
+
+        CLUSTER_RET: cluster-retention {
+          compatible = "domain-idle-state";
+          arm,psci-suspend-param = <0x1000011>;
+          entry-latency-us = <500>;
+          exit-latency-us = <500>;
+          min-residency-us = <2000>;
+        };
+
+        CLUSTER_PWRDN: cluster-power-down {
+          compatible = "domain-idle-state";
+          arm,psci-suspend-param = <0x1000031>;
+          entry-latency-us = <2000>;
+          exit-latency-us = <2000>;
+          min-residency-us = <6000>;
+        };
+      };
+    };
+
+    psci {
+      compatible = "arm,psci-1.0";
+      method = "smc";
+
+      CPU_PD0: cpu-pd0 {
+        #power-domain-cells = <0>;
+        domain-idle-states = <&CPU_PWRDN>;
+        power-domains = <&CLUSTER_PD>;
+      };
+
+      CPU_PD1: cpu-pd1 {
+        #power-domain-cells = <0>;
+        domain-idle-states =  <&CPU_PWRDN>;
+        power-domains = <&CLUSTER_PD>;
+      };
+
+      CLUSTER_PD: cluster-pd {
+        #power-domain-cells = <0>;
+        domain-idle-states = <&CLUSTER_RET>, <&CLUSTER_PWRDN>;
+      };
     };
 ...

Documentation/devicetree/bindings/power/qcom,rpmpd.txt

···
-Qualcomm RPM/RPMh Power domains
-
-For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh
-which then translates it into a corresponding voltage on a rail
-
-Required Properties:
- - compatible: Should be one of the following
-	* qcom,msm8976-rpmpd: RPM Power domain for the msm8976 family of SoC
-	* qcom,msm8996-rpmpd: RPM Power domain for the msm8996 family of SoC
-	* qcom,msm8998-rpmpd: RPM Power domain for the msm8998 family of SoC
-	* qcom,qcs404-rpmpd: RPM Power domain for the qcs404 family of SoC
-	* qcom,sdm845-rpmhpd: RPMh Power domain for the sdm845 family of SoC
- - #power-domain-cells: number of cells in Power domain specifier
-	must be 1.
- - operating-points-v2: Phandle to the OPP table for the Power domain.
-	Refer to Documentation/devicetree/bindings/power/power_domain.txt
-	and Documentation/devicetree/bindings/opp/opp.txt for more details
-
-Refer to <dt-bindings/power/qcom-rpmpd.h> for the level values for
-various OPPs for different platforms as well as Power domain indexes
-
-Example: rpmh power domain controller and OPP table
-
-#include <dt-bindings/power/qcom-rpmhpd.h>
-
-opp-level values specified in the OPP tables for RPMh power domains
-should use the RPMH_REGULATOR_LEVEL_* constants from
-<dt-bindings/power/qcom-rpmhpd.h>
-
-	rpmhpd: power-controller {
-		compatible = "qcom,sdm845-rpmhpd";
-		#power-domain-cells = <1>;
-		operating-points-v2 = <&rpmhpd_opp_table>;
-
-		rpmhpd_opp_table: opp-table {
-			compatible = "operating-points-v2";
-
-			rpmhpd_opp_ret: opp1 {
-				opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
-			};
-
-			rpmhpd_opp_min_svs: opp2 {
-				opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
-			};
-
-			rpmhpd_opp_low_svs: opp3 {
-				opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
-			};
-
-			rpmhpd_opp_svs: opp4 {
-				opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
-			};
-
-			rpmhpd_opp_svs_l1: opp5 {
-				opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
-			};
-
-			rpmhpd_opp_nom: opp6 {
-				opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
-			};
-
-			rpmhpd_opp_nom_l1: opp7 {
-				opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
-			};
-
-			rpmhpd_opp_nom_l2: opp8 {
-				opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
-			};
-
-			rpmhpd_opp_turbo: opp9 {
-				opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
-			};
-
-			rpmhpd_opp_turbo_l1: opp10 {
-				opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
-			};
-		};
-	};
-
-Example: rpm power domain controller and OPP table
-
-	rpmpd: power-controller {
-		compatible = "qcom,msm8996-rpmpd";
-		#power-domain-cells = <1>;
-		operating-points-v2 = <&rpmpd_opp_table>;
-
-		rpmpd_opp_table: opp-table {
-			compatible = "operating-points-v2";
-
-			rpmpd_opp_low: opp1 {
-				opp-level = <1>;
-			};
-
-			rpmpd_opp_ret: opp2 {
-				opp-level = <2>;
-			};
-
-			rpmpd_opp_svs: opp3 {
-				opp-level = <3>;
-			};
-
-			rpmpd_opp_normal: opp4 {
-				opp-level = <4>;
-			};
-
-			rpmpd_opp_high: opp5 {
-				opp-level = <5>;
-			};
-
-			rpmpd_opp_turbo: opp6 {
-				opp-level = <6>;
-			};
-		};
-	};
-
-Example: Client/Consumer device using OPP table
-
-	leaky-device0@12350000 {
-		compatible = "foo,i-leak-current";
-		reg = <0x12350000 0x1000>;
-		power-domains = <&rpmhpd SDM845_MX>;
-		operating-points-v2 = <&leaky_opp_table>;
-	};
-
-
-	leaky_opp_table: opp-table {
-		compatible = "operating-points-v2";
-
-		opp1 {
-			opp-hz = /bits/ 64 <144000>;
-			required-opps = <&rpmhpd_opp_low>;
-		};
-
-		opp2 {
-			opp-hz = /bits/ 64 <400000>;
-			required-opps = <&rpmhpd_opp_ret>;
-		};
-
-		opp3 {
-			opp-hz = /bits/ 64 <20000000>;
-			required-opps = <&rpmpd_opp_svs>;
-		};
-
-		opp4 {
-			opp-hz = /bits/ 64 <25000000>;
-			required-opps = <&rpmpd_opp_normal>;
-		};
-	};

Documentation/devicetree/bindings/power/qcom,rpmpd.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/qcom,rpmpd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm RPM/RPMh Power domains
+
+maintainers:
+  - Rajendra Nayak <[e-mail]>
+
+description:
+  For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh
+  which then translates it into a corresponding voltage on a rail.
+
+properties:
+  compatible:
+    enum:
+      - qcom,msm8976-rpmpd
+      - qcom,msm8996-rpmpd
+      - qcom,msm8998-rpmpd
+      - qcom,qcs404-rpmpd
+      - qcom,sc7180-rpmhpd
+      - qcom,sdm845-rpmhpd
+      - qcom,sm8150-rpmhpd
+
+  '#power-domain-cells':
+    const: 1
+
+  operating-points-v2: true
+
+  opp-table:
+    type: object
+
+required:
+  - compatible
+  - '#power-domain-cells'
+  - operating-points-v2
+
+additionalProperties: false
+
+examples:
+  - |
+
+    // Example 1 (rpmh power domain controller and OPP table):
+
+    #include <dt-bindings/power/qcom-rpmpd.h>
+
+    rpmhpd: power-controller {
+      compatible = "qcom,sdm845-rpmhpd";
+      #power-domain-cells = <1>;
+      operating-points-v2 = <&rpmhpd_opp_table>;
+
+      rpmhpd_opp_table: opp-table {
+        compatible = "operating-points-v2";
+
+        rpmhpd_opp_ret: opp1 {
+          opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>;
+        };
+
+        rpmhpd_opp_min_svs: opp2 {
+          opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>;
+        };
+
+        rpmhpd_opp_low_svs: opp3 {
+          opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
+        };
+
+        rpmhpd_opp_svs: opp4 {
+          opp-level = <RPMH_REGULATOR_LEVEL_SVS>;
+        };
+
+        rpmhpd_opp_svs_l1: opp5 {
+          opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>;
+        };
+
+        rpmhpd_opp_nom: opp6 {
+          opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
+        };
+
+        rpmhpd_opp_nom_l1: opp7 {
+          opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>;
+        };
+
+        rpmhpd_opp_nom_l2: opp8 {
+          opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>;
+        };
+
+        rpmhpd_opp_turbo: opp9 {
+          opp-level = <RPMH_REGULATOR_LEVEL_TURBO>;
+        };
+
+        rpmhpd_opp_turbo_l1: opp10 {
+          opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>;
+        };
+      };
+    };
+
+  - |
+
+    // Example 2 (rpm power domain controller and OPP table):
+
+    rpmpd: power-controller {
+      compatible = "qcom,msm8996-rpmpd";
+      #power-domain-cells = <1>;
+      operating-points-v2 = <&rpmpd_opp_table>;
+
+      rpmpd_opp_table: opp-table {
+        compatible = "operating-points-v2";
+
+        rpmpd_opp_low: opp1 {
+          opp-level = <1>;
+        };
+
+        rpmpd_opp_ret: opp2 {
+          opp-level = <2>;
+        };
+
+        rpmpd_opp_svs: opp3 {
+          opp-level = <3>;
+        };
+
+        rpmpd_opp_normal: opp4 {
+          opp-level = <4>;
+        };
+
+        rpmpd_opp_high: opp5 {
+          opp-level = <5>;
+        };
+
+        rpmpd_opp_turbo: opp6 {
+          opp-level = <6>;
+        };
+      };
+    };
+
+  - |
+
+    // Example 3 (Client/Consumer device using OPP table):
+
+    leaky-device0@12350000 {
+      compatible = "foo,i-leak-current";
+      reg = <0x12350000 0x1000>;
+      power-domains = <&rpmhpd 0>;
+      operating-points-v2 = <&leaky_opp_table>;
+    };
+
+    leaky_opp_table: opp-table {
+      compatible = "operating-points-v2";
+      opp1 {
+        opp-hz = /bits/ 64 <144000>;
+        required-opps = <&rpmhpd_opp_low>;
+      };
+
+      opp2 {
+        opp-hz = /bits/ 64 <400000>;
+        required-opps = <&rpmhpd_opp_ret>;
+      };
+
+      opp3 {
+        opp-hz = /bits/ 64 <20000000>;
+        required-opps = <&rpmpd_opp_svs>;
+      };
+
+      opp4 {
+        opp-hz = /bits/ 64 <25000000>;
+        required-opps = <&rpmpd_opp_normal>;
+      };
+    };
+...

Documentation/devicetree/bindings/power/reset/xlnx,zynqmp-power.txt

···
  - compatible:		Must contain:	"xlnx,zynqmp-power"
  - interrupts:		Interrupt specifier
 
--------
-Example
--------
+Optional properties:
+ - mbox-names	: Name given to channels seen in the 'mboxes' property.
+		  "tx" - Mailbox corresponding to transmit path
+		  "rx" - Mailbox corresponding to receive path
+ - mboxes	: Standard property to specify a Mailbox. Each value of
+		  the mboxes property should contain a phandle to the
+		  mailbox controller device node and an args specifier
+		  that will be the phandle to the intended sub-mailbox
+		  child node to be used for communication. See
+		  Documentation/devicetree/bindings/mailbox/mailbox.txt
+		  for more details about the generic mailbox controller
+		  and client driver bindings. Also see
+		  Documentation/devicetree/bindings/mailbox/ \
+		  xlnx,zynqmp-ipi-mailbox.txt for typical controller that
+		  is used to communicate with this System controllers.
+
+--------
+Examples
+--------
+
+Example with interrupt method:
 
 firmware {
 	zynqmp_firmware: zynqmp-firmware {
···
 		zynqmp_power: zynqmp-power {
 			compatible = "xlnx,zynqmp-power";
 			interrupts = <0 35 4>;
+		};
+	};
+};
+
+Example with IPI mailbox method:
+
+firmware {
+	zynqmp_firmware: zynqmp-firmware {
+		compatible = "xlnx,zynqmp-firmware";
+		method = "smc";
+
+		zynqmp_power: zynqmp-power {
+			compatible = "xlnx,zynqmp-power";
+			interrupt-parent = <&gic>;
+			interrupts = <0 35 4>;
+			mboxes = <&ipi_mailbox_pmu0 0>,
+				 <&ipi_mailbox_pmu0 1>;
+			mbox-names = "tx", "rx";
 		};
 	};
 };

Documentation/devicetree/bindings/reset/brcm,bcm7216-pcie-sata-rescal.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2020 Broadcom
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/reset/brcm,bcm7216-pcie-sata-rescal.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: BCM7216 RESCAL reset controller
+
+description: This document describes the BCM7216 RESCAL reset controller which is responsible for controlling the reset of the SATA and PCIe0/1 instances on BCM7216.
+
+maintainers:
+  - Florian Fainelli <[e-mail]>
+  - Jim Quinlan <[e-mail]>
+
+properties:
+  compatible:
+    const: brcm,bcm7216-pcie-sata-rescal
+
+  reg:
+    maxItems: 1
+
+  "#reset-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - "#reset-cells"
+
+examples:
+  - |
+    reset-controller@8b2c800 {
+          compatible = "brcm,bcm7216-pcie-sata-rescal";
+          reg = <0x8b2c800 0x10>;
+          #reset-cells = <0>;
+    };

Documentation/devicetree/bindings/reset/intel,rcu-gw.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/intel,rcu-gw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: System Reset Controller on Intel Gateway SoCs
+
+maintainers:
+  - Dilip Kota <[e-mail]>
+
+properties:
+  compatible:
+    enum:
+      - intel,rcu-lgm
+      - intel,rcu-xrx200
+
+  reg:
+    description: Reset controller registers.
+    maxItems: 1
+
+  intel,global-reset:
+    description: Global reset register offset and bit offset.
+    allOf:
+      - $ref: /schemas/types.yaml#/definitions/uint32-array
+      - maxItems: 2
+
+  "#reset-cells":
+    minimum: 2
+    maximum: 3
+    description: |
+      First cell is reset request register offset.
+      Second cell is bit offset in reset request register.
+      Third cell is bit offset in reset status register.
+      For LGM SoC, reset cell count is 2 as bit offset in
+      reset request and reset status registers is same. Whereas
+      3 for legacy SoCs as bit offset differs.
+
+required:
+  - compatible
+  - reg
+  - intel,global-reset
+  - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    rcu0: reset-controller@e0000000 {
+        compatible = "intel,rcu-lgm";
+        reg = <0xe0000000 0x20000>;
+        intel,global-reset = <0x10 30>;
+        #reset-cells = <2>;
+    };
+
+    pwm: pwm@e0d00000 {
+        status = "disabled";
+        compatible = "intel,lgm-pwm";
+        reg = <0xe0d00000 0x30>;
+        clocks = <&cgu0 1>;
+        #pwm-cells = <2>;
+        resets = <&rcu0 0x30 21>;
+    };

Documentation/devicetree/bindings/reset/nuvoton,npcm-reset.txt

···
+Nuvoton NPCM Reset controller
+
+Required properties:
+- compatible : "nuvoton,npcm750-reset" for NPCM7XX BMC
+- reg : specifies physical base address and size of the register.
+- #reset-cells: must be set to 2
+
+Optional property:
+- nuvoton,sw-reset-number - Contains the software reset number to restart the SoC.
+  NPCM7xx contain four software reset that represent numbers 1 to 4.
+
+  If 'nuvoton,sw-reset-number' is not specfied software reset is disabled.
+
+Example:
+	rstc: rstc@f0801000 {
+		compatible = "nuvoton,npcm750-reset";
+		reg = <0xf0801000 0x70>;
+		#reset-cells = <2>;
+		nuvoton,sw-reset-number = <2>;
+	};
+
+Specifying reset lines connected to IP NPCM7XX modules
+======================================================
+example:
+
+        spi0: spi@..... {
+                ...
+                resets = <&rstc NPCM7XX_RESET_IPSRST2 NPCM7XX_RESET_PSPI1>;
+                ...
+        };
+
+The index could be found in <dt-bindings/reset/nuvoton,npcm7xx-reset.h>.

Documentation/devicetree/bindings/soc/mediatek/scpsys.txt

···
 power/power-domain.yaml. It provides the power domains defined in
 - include/dt-bindings/power/mt8173-power.h
 - include/dt-bindings/power/mt6797-power.h
+- include/dt-bindings/power/mt6765-power.h
 - include/dt-bindings/power/mt2701-power.h
 - include/dt-bindings/power/mt2712-power.h
 - include/dt-bindings/power/mt7622-power.h
···
 - compatible: Should be one of:
 	- "mediatek,mt2701-scpsys"
 	- "mediatek,mt2712-scpsys"
+	- "mediatek,mt6765-scpsys"
 	- "mediatek,mt6797-scpsys"
 	- "mediatek,mt7622-scpsys"
 	- "mediatek,mt7623-scpsys", "mediatek,mt2701-scpsys": For MT7623 SoC
···
                       enabled before enabling certain power domains.
 	Required clocks for MT2701 or MT7623: "mm", "mfg", "ethif"
 	Required clocks for MT2712: "mm", "mfg", "venc", "jpgdec", "audio", "vdec"
+	Required clocks for MT6765: MUX: "mm", "mfg"
+				    CG: "mm-0", "mm-1", "mm-2", "mm-3", "isp-0",
+					"isp-1", "cam-0", "cam-1", "cam-2",
+					"cam-3","cam-4"
 	Required clocks for MT6797: "mm", "mfg", "vdec"
 	Required clocks for MT7622 or MT7629: "hif_sel"
 	Required clocks for MT7623A: "ethif"

MAINTAINERS

···
 N:	bcm2711
 N:	bcm2835
 F:	drivers/staging/vc04_services
+F:	Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+F:	drivers/pci/controller/pcie-brcmstb.c
 
 BROADCOM BCM47XX MIPS ARCHITECTURE
 M:	Hauke Mehrtens <[e-mail]>
···
 F:	arch/arm/mm/cache-b15-rac.c
 F:	arch/arm/include/asm/hardware/cache-b15-rac.h
 N:	brcmstb
+F:	Documentation/devicetree/bindings/pci/brcm,stb-pcie.yaml
+F:	drivers/pci/controller/pcie-brcmstb.c
 
 BROADCOM BMIPS CPUFREQ DRIVER
 M:	Markus Mayer <[e-mail]>
···
 F:	drivers/firmware/arm_scmi/
 F:	drivers/reset/reset-scmi.c
 F:	include/linux/sc[mp]i_protocol.h
+F:	include/trace/events/scmi.h
 
 SYSTEM RESET/SHUTDOWN DRIVERS
 M:	Sebastian Reichel <[e-mail]>

arch/arm64/boot/dts/qcom/msm8916.dtsi

···
 			reg = <0x0>;
 			next-level-cache = <&L2_0>;
 			enable-method = "psci";
-			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&apcs>;
 			operating-points-v2 = <&cpu_opp_table>;
 			#cooling-cells = <2>;
+			power-domains = <&CPU_PD0>;
+			power-domain-names = "psci";
 		};
 
 		CPU1: cpu@1 {
···
 			reg = <0x1>;
 			next-level-cache = <&L2_0>;
 			enable-method = "psci";
-			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&apcs>;
 			operating-points-v2 = <&cpu_opp_table>;
 			#cooling-cells = <2>;
+			power-domains = <&CPU_PD1>;
+			power-domain-names = "psci";
 		};
 
 		CPU2: cpu@2 {
···
 			reg = <0x2>;
 			next-level-cache = <&L2_0>;
 			enable-method = "psci";
-			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&apcs>;
 			operating-points-v2 = <&cpu_opp_table>;
 			#cooling-cells = <2>;
+			power-domains = <&CPU_PD2>;
+			power-domain-names = "psci";
 		};
 
 		CPU3: cpu@3 {
···
 			reg = <0x3>;
 			next-level-cache = <&L2_0>;
 			enable-method = "psci";
-			cpu-idle-states = <&CPU_SLEEP_0>;
 			clocks = <&apcs>;
 			operating-points-v2 = <&cpu_opp_table>;
 			#cooling-cells = <2>;
+			power-domains = <&CPU_PD3>;
+			power-domain-names = "psci";
 		};
 
 		L2_0: l2-cache {
···
 				min-residency-us = <2000>;
 				local-timer-stop;
 			};
+
+			CLUSTER_RET: cluster-retention {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x41000012>;
+				entry-latency-us = <500>;
+				exit-latency-us = <500>;
+				min-residency-us = <2000>;
+			};
+
+			CLUSTER_PWRDN: cluster-gdhs {
+				compatible = "domain-idle-state";
+				arm,psci-suspend-param = <0x41000032>;
+				entry-latency-us = <2000>;
+				exit-latency-us = <2000>;
+				min-residency-us = <6000>;
+			};
 		};
 	};
 
 	psci {
 		compatible = "arm,psci-1.0";
 		method = "smc";
+
+		CPU_PD0: cpu-pd0 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&CPU_SLEEP_0>;
+		};
+
+		CPU_PD1: cpu-pd1 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&CPU_SLEEP_0>;
+		};
+
+		CPU_PD2: cpu-pd2 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&CPU_SLEEP_0>;
+		};
+
+		CPU_PD3: cpu-pd3 {
+			#power-domain-cells = <0>;
+			power-domains = <&CLUSTER_PD>;
+			domain-idle-states = <&CPU_SLEEP_0>;
+		};
+
+		CLUSTER_PD: cluster-pd {
+			#power-domain-cells = <0>;
+			domain-idle-states = <&CLUSTER_RET>, <&CLUSTER_PWRDN>;
+		};
 	};
 
 	pmu {

arch/powerpc/include/asm/cpm.h

···
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __CPM_H
-#define __CPM_H
-
-#include <linux/compiler.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/of.h>
-#include <soc/fsl/qe/qe.h>
-
-/*
- * SPI Parameter RAM common to QE and CPM.
- */
-struct spi_pram {
-	__be16	rbase;	/* Rx Buffer descriptor base address */
-	__be16	tbase;	/* Tx Buffer descriptor base address */
-	u8	rfcr;	/* Rx function code */
-	u8	tfcr;	/* Tx function code */
-	__be16	mrblr;	/* Max receive buffer length */
-	__be32	rstate;	/* Internal */
-	__be32	rdp;	/* Internal */
-	__be16	rbptr;	/* Internal */
-	__be16	rbc;	/* Internal */
-	__be32	rxtmp;	/* Internal */
-	__be32	tstate;	/* Internal */
-	__be32	tdp;	/* Internal */
-	__be16	tbptr;	/* Internal */
-	__be16	tbc;	/* Internal */
-	__be32	txtmp;	/* Internal */
-	__be32	res;	/* Tx temp. */
-	__be16  rpbase;	/* Relocation pointer (CPM1 only) */
-	__be16	res1;	/* Reserved */
-};
-
-/*
- * USB Controller pram common to QE and CPM.
- */
-struct usb_ctlr {
-	u8	usb_usmod;
-	u8	usb_usadr;
-	u8	usb_uscom;
-	u8	res1[1];
-	__be16	usb_usep[4];
-	u8	res2[4];
-	__be16	usb_usber;
-	u8	res3[2];
-	__be16	usb_usbmr;
-	u8	res4[1];
-	u8	usb_usbs;
-	/* Fields down below are QE-only */
-	__be16	usb_ussft;
-	u8	res5[2];
-	__be16	usb_usfrn;
-	u8	res6[0x22];
-} __attribute__ ((packed));
-
-/*
- * Function code bits, usually generic to devices.
- */
-#ifdef CONFIG_CPM1
-#define CPMFCR_GBL	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
-#define CPMFCR_TC2	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
-#define CPMFCR_DTB	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
-#define CPMFCR_BDB	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
-#else
-#define CPMFCR_GBL	((u_char)0x20)	/* Set memory snooping */
-#define CPMFCR_TC2	((u_char)0x04)	/* Transfer code 2 value */
-#define CPMFCR_DTB	((u_char)0x02)	/* Use local bus for data when set */
-#define CPMFCR_BDB	((u_char)0x01)	/* Use local bus for BD when set */
-#endif
-#define CPMFCR_EB	((u_char)0x10)	/* Set big endian byte order */
-
-/* Opcodes common to CPM1 and CPM2
-*/
-#define CPM_CR_INIT_TRX		((ushort)0x0000)
-#define CPM_CR_INIT_RX		((ushort)0x0001)
-#define CPM_CR_INIT_TX		((ushort)0x0002)
-#define CPM_CR_HUNT_MODE	((ushort)0x0003)
-#define CPM_CR_STOP_TX		((ushort)0x0004)
-#define CPM_CR_GRA_STOP_TX	((ushort)0x0005)
-#define CPM_CR_RESTART_TX	((ushort)0x0006)
-#define CPM_CR_CLOSE_RX_BD	((ushort)0x0007)
-#define CPM_CR_SET_GADDR	((ushort)0x0008)
-#define CPM_CR_SET_TIMER	((ushort)0x0008)
-#define CPM_CR_STOP_IDMA	((ushort)0x000b)
-
-/* Buffer descriptors used by many of the CPM protocols. */
-typedef struct cpm_buf_desc {
-	ushort	cbd_sc;		/* Status and Control */
-	ushort	cbd_datlen;	/* Data length in buffer */
-	uint	cbd_bufaddr;	/* Buffer address in host memory */
-} cbd_t;
-
-/* Buffer descriptor control/status used by serial
- */
-
-#define BD_SC_EMPTY	(0x8000)	/* Receive is empty */
-#define BD_SC_READY	(0x8000)	/* Transmit is ready */
-#define BD_SC_WRAP	(0x2000)	/* Last buffer descriptor */
-#define BD_SC_INTRPT	(0x1000)	/* Interrupt on change */
-#define BD_SC_LAST	(0x0800)	/* Last buffer in frame */
-#define BD_SC_TC	(0x0400)	/* Transmit CRC */
-#define BD_SC_CM	(0x0200)	/* Continuous mode */
-#define BD_SC_ID	(0x0100)	/* Rec'd too many idles */
-#define BD_SC_P		(0x0100)	/* xmt preamble */
-#define BD_SC_BR	(0x0020)	/* Break received */
-#define BD_SC_FR	(0x0010)	/* Framing error */
-#define BD_SC_PR	(0x0008)	/* Parity error */
-#define BD_SC_NAK	(0x0004)	/* NAK - did not respond */
-#define BD_SC_OV	(0x0002)	/* Overrun */
-#define BD_SC_UN	(0x0002)	/* Underrun */
-#define BD_SC_CD	(0x0001)	/* */
-#define BD_SC_CL	(0x0001)	/* Collision */
-
-/* Buffer descriptor control/status used by Ethernet receive.
- * Common to SCC and FCC.
- */
-#define BD_ENET_RX_EMPTY	(0x8000)
-#define BD_ENET_RX_WRAP		(0x2000)
-#define BD_ENET_RX_INTR		(0x1000)
-#define BD_ENET_RX_LAST		(0x0800)
-#define BD_ENET_RX_FIRST	(0x0400)
-#define BD_ENET_RX_MISS		(0x0100)
-#define BD_ENET_RX_BC		(0x0080)	/* FCC Only */
-#define BD_ENET_RX_MC		(0x0040)	/* FCC Only */
-#define BD_ENET_RX_LG		(0x0020)
-#define BD_ENET_RX_NO		(0x0010)
-#define BD_ENET_RX_SH		(0x0008)
-#define BD_ENET_RX_CR		(0x0004)
-#define BD_ENET_RX_OV		(0x0002)
-#define BD_ENET_RX_CL		(0x0001)
-#define BD_ENET_RX_STATS	(0x01ff)	/* All status bits */
-
-/* Buffer descriptor control/status used by Ethernet transmit.
- * Common to SCC and FCC.
- */
-#define BD_ENET_TX_READY	(0x8000)
-#define BD_ENET_TX_PAD		(0x4000)
-#define BD_ENET_TX_WRAP		(0x2000)
-#define BD_ENET_TX_INTR		(0x1000)
-#define BD_ENET_TX_LAST		(0x0800)
-#define BD_ENET_TX_TC		(0x0400)
-#define BD_ENET_TX_DEF		(0x0200)
-#define BD_ENET_TX_HB		(0x0100)
-#define BD_ENET_TX_LC		(0x0080)
-#define BD_ENET_TX_RL		(0x0040)
-#define BD_ENET_TX_RCMASK	(0x003c)
-#define BD_ENET_TX_UN		(0x0002)
-#define BD_ENET_TX_CSL		(0x0001)
-#define BD_ENET_TX_STATS	(0x03ff)	/* All status bits */
-
-/* Buffer descriptor control/status used by Transparent mode SCC.
- */
-#define BD_SCC_TX_LAST		(0x0800)
-
-/* Buffer descriptor control/status used by I2C.
- */
-#define BD_I2C_START		(0x0400)
-
-#ifdef CONFIG_CPM
-int cpm_command(u32 command, u8 opcode);
-#else
-static inline int cpm_command(u32 command, u8 opcode)
-{
-	return -ENOSYS;
-}
-#endif /* CONFIG_CPM */
-
-int cpm2_gpiochip_add32(struct device *dev);
-
-#endif
+#include <soc/fsl/cpm.h>

arch/powerpc/platforms/83xx/km83xx.c

···
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include "mpc83xx.h"
 
···
 	.name		= "mpc83xx-km-platform",
 	.probe		= mpc83xx_km_probe,
 	.setup_arch	= mpc83xx_km_setup_arch,
-	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
+	.init_IRQ	= mpc83xx_ipic_init_IRQ,
 	.get_irq	= ipic_get_irq,
 	.restart	= mpc83xx_restart,
 	.time_init	= mpc83xx_time_init,

arch/powerpc/platforms/83xx/misc.c

···
 #include <asm/io.h>
 #include <asm/hw_irq.h>
 #include <asm/ipic.h>
-#include <soc/fsl/qe/qe_ic.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 
···
 	 */
 	ipic_set_default_priority();
 }
-
-#ifdef CONFIG_QUICC_ENGINE
-void __init mpc83xx_qe_init_IRQ(void)
-{
-	struct device_node *np;
-
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-	if (!np) {
-		np = of_find_node_by_type(NULL, "qeic");
-		if (!np)
-			return;
-	}
-	qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
-	of_node_put(np);
-}
-
-void __init mpc83xx_ipic_and_qe_init_IRQ(void)
-{
-	mpc83xx_ipic_init_IRQ();
-	mpc83xx_qe_init_IRQ();
-}
-#endif /* CONFIG_QUICC_ENGINE */
 
 static const struct of_device_id of_bus_ids[] __initconst = {
 	{ .type = "soc", },

arch/powerpc/platforms/83xx/mpc832x_mds.c

···
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include "mpc83xx.h"
 
···
 	.name 		= "MPC832x MDS",
 	.probe 		= mpc832x_sys_probe,
 	.setup_arch 	= mpc832x_sys_setup_arch,
-	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
+	.init_IRQ	= mpc83xx_ipic_init_IRQ,
 	.get_irq 	= ipic_get_irq,
 	.restart 	= mpc83xx_restart,
 	.time_init 	= mpc83xx_time_init,

arch/powerpc/platforms/83xx/mpc832x_rdb.c

···
 #include <asm/ipic.h>
 #include <asm/udbg.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 
···
 	.name		= "MPC832x RDB",
 	.probe		= mpc832x_rdb_probe,
 	.setup_arch	= mpc832x_rdb_setup_arch,
-	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
+	.init_IRQ	= mpc83xx_ipic_init_IRQ,
 	.get_irq	= ipic_get_irq,
 	.restart	= mpc83xx_restart,
 	.time_init	= mpc83xx_time_init,

arch/powerpc/platforms/83xx/mpc836x_mds.c

···
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include "mpc83xx.h"
 
···
 	.name		= "MPC836x MDS",
 	.probe		= mpc836x_mds_probe,
 	.setup_arch	= mpc836x_mds_setup_arch,
-	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
+	.init_IRQ	= mpc83xx_ipic_init_IRQ,
 	.get_irq	= ipic_get_irq,
 	.restart	= mpc83xx_restart,
 	.time_init	= mpc83xx_time_init,

arch/powerpc/platforms/83xx/mpc836x_rdk.c

···
 #include <asm/ipic.h>
 #include <asm/udbg.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 
···
 	.name		= "MPC836x RDK",
 	.probe		= mpc836x_rdk_probe,
 	.setup_arch	= mpc836x_rdk_setup_arch,
-	.init_IRQ	= mpc83xx_ipic_and_qe_init_IRQ,
+	.init_IRQ	= mpc83xx_ipic_init_IRQ,
 	.get_irq	= ipic_get_irq,
 	.restart	= mpc83xx_restart,
 	.time_init	= mpc83xx_time_init,

arch/powerpc/platforms/83xx/mpc83xx.h

···
 extern int mpc834x_usb_cfg(void);
 extern int mpc831x_usb_cfg(void);
 extern void mpc83xx_ipic_init_IRQ(void);
-#ifdef CONFIG_QUICC_ENGINE
-extern void mpc83xx_qe_init_IRQ(void);
-extern void mpc83xx_ipic_and_qe_init_IRQ(void);
-#else
-static inline void __init mpc83xx_qe_init_IRQ(void) {}
-#define mpc83xx_ipic_and_qe_init_IRQ mpc83xx_ipic_init_IRQ
-#endif /* CONFIG_QUICC_ENGINE */
 
 #ifdef CONFIG_PCI
 extern void mpc83xx_setup_pci(void);

arch/powerpc/platforms/85xx/corenet_generic.c

···
 #include <asm/mpic.h>
 #include <asm/ehv_pic.h>
 #include <asm/swiotlb.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include <linux/of_platform.h>
 #include <sysdev/fsl_soc.h>
···
 	unsigned int flags = MPIC_BIG_ENDIAN | MPIC_SINGLE_DEST_CPU |
 		MPIC_NO_RESET;
 
-	struct device_node *np;
-
 	if (ppc_md.get_irq == mpic_get_coreint_irq)
 		flags |= MPIC_ENABLE_COREINT;
 
···
 	BUG_ON(mpic == NULL);
 
 	mpic_init(mpic);
-
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-	if (np) {
-		qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-				qe_ic_cascade_high_mpic);
-		of_node_put(np);
-	}
 }
 
 /*

arch/powerpc/platforms/85xx/mpc85xx_mds.c

···
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 #include <asm/mpic.h>
 #include <asm/swiotlb.h>
 #include "smp.h"
···
 	}
 }
 
-static void __init mpc85xx_mds_qeic_init(void)
-{
-	struct device_node *np;
-
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!of_device_is_available(np)) {
-		of_node_put(np);
-		return;
-	}
-
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-	if (!np) {
-		np = of_find_node_by_type(NULL, "qeic");
-		if (!np)
-			return;
-	}
-
-	if (machine_is(p1021_mds))
-		qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-				qe_ic_cascade_high_mpic);
-	else
-		qe_ic_init(np, 0, qe_ic_cascade_muxed_mpic, NULL);
-	of_node_put(np);
-}
 #else
 static void __init mpc85xx_mds_qe_init(void) { }
-static void __init mpc85xx_mds_qeic_init(void) { }
 #endif	/* CONFIG_QUICC_ENGINE */
 
 static void __init mpc85xx_mds_setup_arch(void)
···
 	BUG_ON(mpic == NULL);
 
 	mpic_init(mpic);
-	mpc85xx_mds_qeic_init();
 }
 
 static int __init mpc85xx_mds_probe(void)

arch/powerpc/platforms/85xx/mpc85xx_rdb.c

···
 #include <asm/udbg.h>
 #include <asm/mpic.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
···
 {
 	struct mpic *mpic;
 
-#ifdef CONFIG_QUICC_ENGINE
-	struct device_node *np;
-#endif
-
 	if (of_machine_is_compatible("fsl,MPC85XXRDB-CAMP")) {
 		mpic = mpic_alloc(NULL, 0, MPIC_NO_RESET |
 			MPIC_BIG_ENDIAN |
···
 
 	BUG_ON(mpic == NULL);
 	mpic_init(mpic);
-
-#ifdef CONFIG_QUICC_ENGINE
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-	if (np) {
-		qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-				qe_ic_cascade_high_mpic);
-		of_node_put(np);
-
-	} else
-		pr_err("%s: Could not find qe-ic node\n", __func__);
-#endif
-
 }
 
 /*

arch/powerpc/platforms/85xx/twr_p102x.c

···
 #include <asm/udbg.h>
 #include <asm/mpic.h>
 #include <soc/fsl/qe/qe.h>
-#include <soc/fsl/qe/qe_ic.h>
 
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
···
 {
 	struct mpic *mpic;
 
-#ifdef CONFIG_QUICC_ENGINE
-	struct device_node *np;
-#endif
-
 	mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
 			MPIC_SINGLE_DEST_CPU,
 			0, 256, " OpenPIC  ");
 
 	BUG_ON(mpic == NULL);
 	mpic_init(mpic);
-
-#ifdef CONFIG_QUICC_ENGINE
-	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
-	if (np) {
-		qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
-				qe_ic_cascade_high_mpic);
-		of_node_put(np);
-	} else
-		pr_err("Could not find qe-ic node\n");
-#endif
 }
 
 /* ************************************************************************

drivers/base/power/domain.c

···
 EXPORT_SYMBOL_GPL(of_genpd_add_subdomain);
 
 /**
+ * of_genpd_remove_subdomain - Remove a subdomain from an I/O PM domain.
+ * @parent_spec: OF phandle args to use for parent PM domain look-up
+ * @subdomain_spec: OF phandle args to use for subdomain look-up
+ *
+ * Looks-up a parent PM domain and subdomain based upon phandle args
+ * provided and removes the subdomain from the parent PM domain. Returns a
+ * negative error code on failure.
+ */
+int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
+			      struct of_phandle_args *subdomain_spec)
+{
+	struct generic_pm_domain *parent, *subdomain;
+	int ret;
+
+	mutex_lock(&gpd_list_lock);
+
+	parent = genpd_get_from_provider(parent_spec);
+	if (IS_ERR(parent)) {
+		ret = PTR_ERR(parent);
+		goto out;
+	}
+
+	subdomain = genpd_get_from_provider(subdomain_spec);
+	if (IS_ERR(subdomain)) {
+		ret = PTR_ERR(subdomain);
+		goto out;
+	}
+
+	ret = pm_genpd_remove_subdomain(parent, subdomain);
+
+out:
+	mutex_unlock(&gpd_list_lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(of_genpd_remove_subdomain);
+
+/**
  * of_genpd_remove_last - Remove the last PM domain registered for a provider
  * @provider: Pointer to device structure associated with provider
  *

drivers/bus/Kconfig

···
 	tristate "Tegra ACONNECT Bus Driver"
 	depends on ARCH_TEGRA_210_SOC
 	depends on OF && PM
-	select PM_CLK
 	help
 	  Driver for the Tegra ACONNECT bus which is used to interface with
 	  the devices inside the Audio Processing Engine (APE) for Tegra210.

drivers/bus/moxtet.c

···
 	return 0;
 }
 
-struct bus_type moxtet_bus_type = {
+static struct bus_type moxtet_bus_type = {
 	.name		= "moxtet",
 	.dev_groups	= moxtet_dev_groups,
 	.match		= moxtet_match,
 };
-EXPORT_SYMBOL_GPL(moxtet_bus_type);
 
 int __moxtet_register_driver(struct module *owner,
 			     struct moxtet_driver *mdrv)

drivers/bus/ti-sysc.c

···
 {
 	struct ti_sysc_platform_data *pdata;
 
-	if (ddata->legacy_mode)
+	if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
 		return;
 
 	pdata = dev_get_platdata(ddata->dev);
···
 {
 	struct ti_sysc_platform_data *pdata;
 
-	if (ddata->legacy_mode)
+	if (ddata->legacy_mode || (ddata->cfg.quirks & SYSC_QUIRK_CLKDM_NOAUTO))
 		return;
 
 	pdata = dev_get_platdata(ddata->dev);
···
 {
 	ddata->rsts =
 		devm_reset_control_get_optional_shared(ddata->dev, "rstctrl");
-	if (IS_ERR(ddata->rsts))
-		return PTR_ERR(ddata->rsts);
 
-	return 0;
+	return PTR_ERR_OR_ZERO(ddata->rsts);
 }
 
 /**
···
 	/* These drivers need to be fixed to not use pm_runtime_irq_safe() */
 	SYSC_QUIRK("gpio", 0, 0, 0x10, 0x114, 0x50600801, 0xffff00ff,
 		   SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_OPT_CLKS_IN_RESET),
-	SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000020, 0xffffffff,
-		   SYSC_QUIRK_LEGACY_IDLE),
-	SYSC_QUIRK("mmu", 0, 0, 0x10, 0x14, 0x00000030, 0xffffffff,
-		   SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("sham", 0, 0x100, 0x110, 0x114, 0x40000c03, 0xffffffff,
 		   SYSC_QUIRK_LEGACY_IDLE),
 	SYSC_QUIRK("smartreflex", 0, -1, 0x24, -1, 0x00000000, 0xffffffff,
···
 	/* Quirks that need to be set based on detected module */
 	SYSC_QUIRK("aess", 0, 0, 0x10, -1, 0x40000000, 0xffffffff,
 		   SYSC_MODULE_QUIRK_AESS),
+	SYSC_QUIRK("dcan", 0x48480000, 0x20, -1, -1, 0xa3170504, 0xffffffff,
+		   SYSC_QUIRK_CLKDM_NOAUTO),
+	SYSC_QUIRK("dwc3", 0x48880000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
+		   SYSC_QUIRK_CLKDM_NOAUTO),
+	SYSC_QUIRK("dwc3", 0x488c0000, 0, 0x10, -1, 0x500a0200, 0xffffffff,
+		   SYSC_QUIRK_CLKDM_NOAUTO),
 	SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x00000006, 0xffffffff,
 		   SYSC_MODULE_QUIRK_HDQ1W),
 	SYSC_QUIRK("hdq1w", 0, 0, 0x14, 0x18, 0x0000000a, 0xffffffff,

drivers/clk/clk-scmi.c

···
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_CLOCK },
+	{ SCMI_PROTOCOL_CLOCK, "clocks" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);

drivers/cpufreq/scmi-cpufreq.c

···
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_PERF },
+	{ SCMI_PROTOCOL_PERF, "cpufreq" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);

drivers/cpuidle/Makefile

···
 obj-$(CONFIG_ARM_AT91_CPUIDLE)          += cpuidle-at91.o
 obj-$(CONFIG_ARM_EXYNOS_CPUIDLE)        += cpuidle-exynos.o
 obj-$(CONFIG_ARM_CPUIDLE)		+= cpuidle-arm.o
-obj-$(CONFIG_ARM_PSCI_CPUIDLE)		+= cpuidle-psci.o
+obj-$(CONFIG_ARM_PSCI_CPUIDLE)		+= cpuidle_psci.o
+cpuidle_psci-y				:= cpuidle-psci.o
+cpuidle_psci-$(CONFIG_PM_GENERIC_DOMAINS_OF) += cpuidle-psci-domain.o
 
 ###############################################################################
 # MIPS drivers

drivers/cpuidle/cpuidle-psci-domain.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * PM domains for CPUs via genpd - managed by cpuidle-psci.
+ *
+ * Copyright (C) 2019 Linaro Ltd.
+ * Author: Ulf Hansson <[e-mail]>
+ *
+ */
+
+#define pr_fmt(fmt) "CPUidle PSCI: " fmt
+
+#include <linux/cpu.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+#include <linux/psci.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include "cpuidle-psci.h"
+
+struct psci_pd_provider {
+	struct list_head link;
+	struct device_node *node;
+};
+
+static LIST_HEAD(psci_pd_providers);
+static bool osi_mode_enabled __initdata;
+
+static int psci_pd_power_off(struct generic_pm_domain *pd)
+{
+	struct genpd_power_state *state = &pd->states[pd->state_idx];
+	u32 *pd_state;
+
+	if (!state->data)
+		return 0;
+
+	/* OSI mode is enabled, set the corresponding domain state. */
+	pd_state = state->data;
+	psci_set_domain_state(*pd_state);
+
+	return 0;
+}
+
+static int __init psci_pd_parse_state_nodes(struct genpd_power_state *states,
+					int state_count)
+{
+	int i, ret;
+	u32 psci_state, *psci_state_buf;
+
+	for (i = 0; i < state_count; i++) {
+		ret = psci_dt_parse_state_node(to_of_node(states[i].fwnode),
+					&psci_state);
+		if (ret)
+			goto free_state;
+
+		psci_state_buf = kmalloc(sizeof(u32), GFP_KERNEL);
+		if (!psci_state_buf) {
+			ret = -ENOMEM;
+			goto free_state;
+		}
+		*psci_state_buf = psci_state;
+		states[i].data = psci_state_buf;
+	}
+
+	return 0;
+
+free_state:
+	i--;
+	for (; i >= 0; i--)
+		kfree(states[i].data);
+	return ret;
+}
+
+static int __init psci_pd_parse_states(struct device_node *np,
+			struct genpd_power_state **states, int *state_count)
+{
+	int ret;
+
+	/* Parse the domain idle states. */
+	ret = of_genpd_parse_idle_states(np, states, state_count);
+	if (ret)
+		return ret;
+
+	/* Fill out the PSCI specifics for each found state. */
+	ret = psci_pd_parse_state_nodes(*states, *state_count);
+	if (ret)
+		kfree(*states);
+
+	return ret;
+}
+
+static void psci_pd_free_states(struct genpd_power_state *states,
+				unsigned int state_count)
+{
+	int i;
+
+	for (i = 0; i < state_count; i++)
+		kfree(states[i].data);
+	kfree(states);
+}
+
+static int __init psci_pd_init(struct device_node *np)
+{
+	struct generic_pm_domain *pd;
+	struct psci_pd_provider *pd_provider;
+	struct dev_power_governor *pd_gov;
+	struct genpd_power_state *states = NULL;
+	int ret = -ENOMEM, state_count = 0;
+
+	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
+	if (!pd)
+		goto out;
+
+	pd_provider = kzalloc(sizeof(*pd_provider), GFP_KERNEL);
+	if (!pd_provider)
+		goto free_pd;
+
+	pd->name = kasprintf(GFP_KERNEL, "%pOF", np);
+	if (!pd->name)
+		goto free_pd_prov;
+
+	/*
+	 * Parse the domain idle states and let genpd manage the state selection
+	 * for those being compatible with "domain-idle-state".
+	 */
+	ret = psci_pd_parse_states(np, &states, &state_count);
+	if (ret)
+		goto free_name;
+
+	pd->free_states = psci_pd_free_states;
+	pd->name = kbasename(pd->name);
+	pd->power_off = psci_pd_power_off;
+	pd->states = states;
+	pd->state_count = state_count;
+	pd->flags |= GENPD_FLAG_IRQ_SAFE | GENPD_FLAG_CPU_DOMAIN;
+
+	/* Use governor for CPU PM domains if it has some states to manage. */
+	pd_gov = state_count > 0 ? &pm_domain_cpu_gov : NULL;
+
+	ret = pm_genpd_init(pd, pd_gov, false);
+	if (ret) {
+		psci_pd_free_states(states, state_count);
+		goto free_name;
+	}
+
+	ret = of_genpd_add_provider_simple(np, pd);
+	if (ret)
+		goto remove_pd;
+
+	pd_provider->node = of_node_get(np);
+	list_add(&pd_provider->link, &psci_pd_providers);
+
+	pr_debug("init PM domain %s\n", pd->name);
+	return 0;
+
+remove_pd:
+	pm_genpd_remove(pd);
+free_name:
+	kfree(pd->name);
+free_pd_prov:
+	kfree(pd_provider);
+free_pd:
+	kfree(pd);
+out:
+	pr_err("failed to init PM domain ret=%d %pOF\n", ret, np);
+	return ret;
+}
+
+static void __init psci_pd_remove(void)
+{
+	struct psci_pd_provider *pd_provider, *it;
+	struct generic_pm_domain *genpd;
+
+	list_for_each_entry_safe(pd_provider, it, &psci_pd_providers, link) {
+		of_genpd_del_provider(pd_provider->node);
+
+		genpd = of_genpd_remove_last(pd_provider->node);
+		if (!IS_ERR(genpd))
+			kfree(genpd);
+
+		of_node_put(pd_provider->node);
+		list_del(&pd_provider->link);
+		kfree(pd_provider);
+	}
+}
+
+static int __init psci_pd_init_topology(struct device_node *np, bool add)
+{
+	struct device_node *node;
+	struct of_phandle_args child, parent;
+	int ret;
+
+	for_each_child_of_node(np, node) {
+		if (of_parse_phandle_with_args(node, "power-domains",
+					"#power-domain-cells", 0, &parent))
+			continue;
+
+		child.np = node;
+		child.args_count = 0;
+
+		ret = add ? of_genpd_add_subdomain(&parent, &child) :
+			of_genpd_remove_subdomain(&parent, &child);
+		of_node_put(parent.np);
+		if (ret) {
+			of_node_put(node);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int __init psci_pd_add_topology(struct device_node *np)
+{
+	return psci_pd_init_topology(np, true);
+}
+
+static void __init psci_pd_remove_topology(struct device_node *np)
+{
+	psci_pd_init_topology(np, false);
+}
+
+static const struct of_device_id psci_of_match[] __initconst = {
+	{ .compatible = "arm,psci-1.0" },
+	{}
+};
+
+static int __init psci_idle_init_domains(void)
+{
+	struct device_node *np = of_find_matching_node(NULL, psci_of_match);
+	struct device_node *node;
+	int ret = 0, pd_count = 0;
+
+	if (!np)
+		return -ENODEV;
+
+	/* Currently limit the hierarchical topology to be used in OSI mode. */
+	if (!psci_has_osi_support())
+		goto out;
+
+	/*
+	 * Parse child nodes for the "#power-domain-cells" property and
+	 * initialize a genpd/genpd-of-provider pair when it's found.
+	 */
+	for_each_child_of_node(np, node) {
+		if (!of_find_property(node, "#power-domain-cells", NULL))
+			continue;
+
+		ret = psci_pd_init(node);
+		if (ret)
+			goto put_node;
+
+		pd_count++;
+	}
+
+	/* Bail out if not using the hierarchical CPU topology. */
+	if (!pd_count)
+		goto out;
+
+	/* Link genpd masters/subdomains to model the CPU topology. */
+	ret = psci_pd_add_topology(np);
+	if (ret)
+		goto remove_pd;
+
+	/* Try to enable OSI mode. */
+	ret = psci_set_osi_mode();
+	if (ret) {
+		pr_warn("failed to enable OSI mode: %d\n", ret);
+		psci_pd_remove_topology(np);
+		goto remove_pd;
+	}
+
+	osi_mode_enabled = true;
+	of_node_put(np);
+	pr_info("Initialized CPU PM domain topology\n");
+	return pd_count;
+
+put_node:
+	of_node_put(node);
+remove_pd:
+	if (pd_count)
+		psci_pd_remove();
+	pr_err("failed to create CPU PM domains ret=%d\n", ret);
+out:
+	of_node_put(np);
+	return ret;
+}
+subsys_initcall(psci_idle_init_domains);
+
+struct device __init *psci_dt_attach_cpu(int cpu)
+{
+	struct device *dev;
+
+	if (!osi_mode_enabled)
+		return NULL;
+
+	dev = dev_pm_domain_attach_by_name(get_cpu_device(cpu), "psci");
+	if (IS_ERR_OR_NULL(dev))
+		return dev;
+
+	pm_runtime_irq_safe(dev);
+	if (cpu_online(cpu))
+		pm_runtime_get_sync(dev);
+
+	return dev;
+}

drivers/cpuidle/cpuidle-psci.c

···
 
 #define pr_fmt(fmt) "CPUidle PSCI: " fmt
 
+#include <linux/cpuhotplug.h>
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/cpu_pm.h>
···
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/psci.h>
+#include <linux/pm_runtime.h>
 #include <linux/slab.h>
 
 #include <asm/cpuidle.h>
 
+#include "cpuidle-psci.h"
 #include "dt_idle_states.h"
 
-static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
+struct psci_cpuidle_data {
+	u32 *psci_states;
+	struct device *dev;
+};
+
+static DEFINE_PER_CPU_READ_MOSTLY(struct psci_cpuidle_data, psci_cpuidle_data);
+static DEFINE_PER_CPU(u32, domain_state);
+static bool psci_cpuidle_use_cpuhp __initdata;
+
+void psci_set_domain_state(u32 state)
+{
+	__this_cpu_write(domain_state, state);
+}
+
+static inline u32 psci_get_domain_state(void)
+{
+	return __this_cpu_read(domain_state);
+}
+
+static inline int psci_enter_state(int idx, u32 state)
+{
+	return CPU_PM_CPU_IDLE_ENTER_PARAM(psci_cpu_suspend_enter, idx, state);
+}
+
+static int psci_enter_domain_idle_state(struct cpuidle_device *dev,
+					struct cpuidle_driver *drv, int idx)
+{
+	struct psci_cpuidle_data *data = this_cpu_ptr(&psci_cpuidle_data);
+	u32 *states = data->psci_states;
+	struct device *pd_dev = data->dev;
+	u32 state;
+	int ret;
+
+	/* Do runtime PM to manage a hierarchical CPU toplogy. */
+	pm_runtime_put_sync_suspend(pd_dev);
+
+	state = psci_get_domain_state();
+	if (!state)
+		state = states[idx];
+
+	ret = psci_enter_state(idx, state);
+
+	pm_runtime_get_sync(pd_dev);
+
+	/* Clear the domain state to start fresh when back from idle. */
+	psci_set_domain_state(0);
+	return ret;
+}
+
+static int psci_idle_cpuhp_up(unsigned int cpu)
+{
+	struct device *pd_dev = __this_cpu_read(psci_cpuidle_data.dev);
+
+	if (pd_dev)
+		pm_runtime_get_sync(pd_dev);
+
+	return 0;
+}
+
+static int psci_idle_cpuhp_down(unsigned int cpu)
+{
+	struct device *pd_dev = __this_cpu_read(psci_cpuidle_data.dev);
+
+	if (pd_dev) {
+		pm_runtime_put_sync(pd_dev);
+		/* Clear domain state to start fresh at next online. */
+		psci_set_domain_state(0);
+	}
+
+	return 0;
+}
+
+static void __init psci_idle_init_cpuhp(void)
+{
+	int err;
+
+	if (!psci_cpuidle_use_cpuhp)
+		return;
+
+	err = cpuhp_setup_state_nocalls(CPUHP_AP_CPU_PM_STARTING,
+					"cpuidle/psci:online",
+					psci_idle_cpuhp_up,
+					psci_idle_cpuhp_down);
+	if (err)
+		pr_warn("Failed %d while setup cpuhp state\n", err);
+}
 
 static int psci_enter_idle_state(struct cpuidle_device *dev,
 				struct cpuidle_driver *drv, int idx)
 {
-	u32 *state = __this_cpu_read(psci_power_state);
+	u32 *state = __this_cpu_read(psci_cpuidle_data.psci_states);
 
-	return CPU_PM_CPU_IDLE_ENTER_PARAM(psci_cpu_suspend_enter,
-					   idx, state[idx - 1]);
+	return psci_enter_state(idx, state[idx]);
 }
 
 static struct cpuidle_driver psci_idle_driver __initdata = {
···
 	{ },
 };
 
-static int __init psci_dt_parse_state_node(struct device_node *np, u32 *state)
+int __init psci_dt_parse_state_node(struct device_node *np, u32 *state)
 {
 	int err = of_property_read_u32(np, "arm,psci-suspend-param", state);
 
···
 	return 0;
 }
 
-static int __init psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
+static int __init psci_dt_cpu_init_idle(struct cpuidle_driver *drv,
+					struct device_node *cpu_node,
+					unsigned int state_count, int cpu)
 {
-	int i, ret = 0, count = 0;
+	int i, ret = 0;
 	u32 *psci_states;
 	struct device_node *state_node;
+	struct psci_cpuidle_data *data = per_cpu_ptr(&psci_cpuidle_data, cpu);
 
-	/* Count idle states */
-	while ((state_node = of_parse_phandle(cpu_node, "cpu-idle-states",
-					      count))) {
-		count++;
-		of_node_put(state_node);
-	}
-
-	if (!count)
-		return -ENODEV;
-
-	psci_states = kcalloc(count, sizeof(*psci_states), GFP_KERNEL);
+	state_count++; /* Add WFI state too */
+	psci_states = kcalloc(state_count, sizeof(*psci_states), GFP_KERNEL);
 	if (!psci_states)
 		return -ENOMEM;
 
-	for (i = 0; i < count; i++) {
-		state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
+	for (i = 1; i < state_count; i++) {
+		state_node = of_get_cpu_state_node(cpu_node, i - 1);
+		if (!state_node)
+			break;
+
 		ret = psci_dt_parse_state_node(state_node, &psci_states[i]);
 		of_node_put(state_node);
 
···
 		pr_debug("psci-power-state %#x index %d\n", psci_states[i], i);
 	}
 
-	/* Idle states parsed correctly, initialize per-cpu pointer */
-	per_cpu(psci_power_state, cpu) = psci_states;
+	if (i != state_count) {
+		ret = -ENODEV;
+		goto free_mem;
+	}
+
+	/* Currently limit the hierarchical topology to be used in OSI mode. */
+	if (psci_has_osi_support()) {
+		data->dev = psci_dt_attach_cpu(cpu);
+		if (IS_ERR(data->dev)) {
+			ret = PTR_ERR(data->dev);
+			goto free_mem;
+		}
+
+		/*
+		 * Using the deepest state for the CPU to trigger a potential
+		 * selection of a shared state for the domain, assumes the
+		 * domain states are all deeper states.
+		 */
+		if (data->dev) {
+			drv->states[state_count - 1].enter =
+				psci_enter_domain_idle_state;
+			psci_cpuidle_use_cpuhp = true;
+		}
+	}
+
+	/* Idle states parsed correctly, store them in the per-cpu struct. */
+	data->psci_states = psci_states;
 	return 0;
 
 free_mem:
···
 	return ret;
 }
 
-static __init int psci_cpu_init_idle(unsigned int cpu)
+static __init int psci_cpu_init_idle(struct cpuidle_driver *drv,
+				     unsigned int cpu, unsigned int state_count)
 {
 	struct device_node *cpu_node;
 	int ret;
···
 	if (!cpu_node)
 		return -ENODEV;
 
-	ret = psci_dt_cpu_init_idle(cpu_node, cpu);
+	ret = psci_dt_cpu_init_idle(drv, cpu_node, state_count, cpu);
 
 	of_node_put(cpu_node);
 
···
 	/*
 	 * Initialize PSCI idle states.
 	 */
-	ret = psci_cpu_init_idle(cpu);
+	ret = psci_cpu_init_idle(drv, cpu, ret);
 	if (ret) {
 		pr_err("CPU %d failed to PSCI idle\n", cpu);
 		goto out_kfree_drv;
···
 			goto out_fail;
 	}
 
+	psci_idle_init_cpuhp();
 	return 0;
 
 out_fail:

drivers/cpuidle/cpuidle-psci.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __CPUIDLE_PSCI_H
+#define __CPUIDLE_PSCI_H
+
+struct device_node;
+
+void psci_set_domain_state(u32 state);
+int __init psci_dt_parse_state_node(struct device_node *np, u32 *state);
+
+#ifdef CONFIG_PM_GENERIC_DOMAINS_OF
+struct device __init *psci_dt_attach_cpu(int cpu);
+#else
+static inline struct device __init *psci_dt_attach_cpu(int cpu) { return NULL; }
+#endif
+
+#endif /* __CPUIDLE_PSCI_H */

drivers/cpuidle/dt_idle_states.c

···
 	for (cpu = cpumask_next(cpumask_first(cpumask), cpumask);
 	     cpu < nr_cpu_ids; cpu = cpumask_next(cpu, cpumask)) {
 		cpu_node = of_cpu_device_node_get(cpu);
-		curr_state_node = of_parse_phandle(cpu_node, "cpu-idle-states",
-						   idx);
+		curr_state_node = of_get_cpu_state_node(cpu_node, idx);
 		if (state_node != curr_state_node)
 			valid = false;
 
···
 	cpu_node = of_cpu_device_node_get(cpumask_first(cpumask));
 
 	for (i = 0; ; i++) {
-		state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);
+		state_node = of_get_cpu_state_node(cpu_node, i);
 		if (!state_node)
 			break;
 

drivers/firmware/Kconfig

···
 	depends on ARM || ARM64
 	select RESET_CONTROLLER
 
-config QCOM_SCM_32
-	def_bool y
-	depends on QCOM_SCM && ARM
-
-config QCOM_SCM_64
-	def_bool y
-	depends on QCOM_SCM && ARM64
-
 config QCOM_SCM_DOWNLOAD_MODE_DEFAULT
 	bool "Qualcomm download mode enabled by default"
 	depends on QCOM_SCM

drivers/firmware/Makefile

···
 obj-$(CONFIG_FIRMWARE_MEMMAP)	+= memmap.o
 obj-$(CONFIG_RASPBERRYPI_FIRMWARE) += raspberrypi.o
 obj-$(CONFIG_FW_CFG_SYSFS)	+= qemu_fw_cfg.o
-obj-$(CONFIG_QCOM_SCM)		+= qcom_scm.o
-obj-$(CONFIG_QCOM_SCM_64)	+= qcom_scm-64.o
-obj-$(CONFIG_QCOM_SCM_32)	+= qcom_scm-32.o
-CFLAGS_qcom_scm-32.o :=$(call as-instr,.arch armv7-a\n.arch_extension sec,-DREQUIRES_SEC=1) -march=armv7-a
+obj-$(CONFIG_QCOM_SCM)		+= qcom_scm.o qcom_scm-smc.o qcom_scm-legacy.o
 obj-$(CONFIG_TI_SCI_PROTOCOL)	+= ti_sci.o
 obj-$(CONFIG_TRUSTED_FOUNDATIONS) += trusted_foundations.o
 obj-$(CONFIG_TURRIS_MOX_RWTM)	+= turris-mox-rwtm.o

drivers/firmware/arm_scmi/bus.c

···
 		return NULL;
 
 	for (; id->protocol_id; id++)
-		if (id->protocol_id == scmi_dev->protocol_id)
-			return id;
+		if (id->protocol_id == scmi_dev->protocol_id) {
+			if (!id->name)
+				return id;
+			else if (!strcmp(id->name, scmi_dev->name))
+				return id;
+		}
 
 	return NULL;
 }
···
 	return fn(handle);
 }
 
+static int scmi_protocol_dummy_init(struct scmi_handle *handle)
+{
+	return 0;
+}
+
 static int scmi_dev_probe(struct device *dev)
 {
 	struct scmi_driver *scmi_drv = to_scmi_driver(dev->driver);
···
 	ret = scmi_protocol_init(scmi_dev->protocol_id, scmi_dev->handle);
 	if (ret)
 		return ret;
+
+	/* Skip protocol initialisation for additional devices */
+	idr_replace(&scmi_protocols, &scmi_protocol_dummy_init,
+		    scmi_dev->protocol_id);
 
 	return scmi_drv->probe(scmi_dev);
 }
···
 }
 
 struct scmi_device *
-scmi_device_create(struct device_node *np, struct device *parent, int protocol)
+scmi_device_create(struct device_node *np, struct device *parent, int protocol,
+		   const char *name)
 {
 	int id, retval;
 	struct scmi_device *scmi_dev;
···
 	if (!scmi_dev)
 		return NULL;
 
+	scmi_dev->name = kstrdup_const(name ?: "unknown", GFP_KERNEL);
+	if (!scmi_dev->name) {
+		kfree(scmi_dev);
+		return NULL;
+	}
+
 	id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);
 	if (id < 0) {
+		kfree_const(scmi_dev->name);
 		kfree(scmi_dev);
 		return NULL;
 	}
···
 
 	return scmi_dev;
 put_dev:
+	kfree_const(scmi_dev->name);
 	put_device(&scmi_dev->dev);
 	ida_simple_remove(&scmi_bus_id, id);
 	return NULL;
···
 
 void scmi_device_destroy(struct scmi_device *scmi_dev)
 {
+	kfree_const(scmi_dev->name);
 	scmi_handle_put(scmi_dev->handle);
 	ida_simple_remove(&scmi_bus_id, scmi_dev->id);
 	device_unregister(&scmi_dev->dev);

drivers/firmware/arm_scmi/clock.c

···
 };
 
 struct clock_info {
+	u32 version;
 	int num_clocks;
 	int max_async_req;
 	atomic_t cur_async_req;
···
 			scmi_clock_describe_rates_get(handle, clkid, clk);
 	}
 
+	cinfo->version = version;
 	handle->clk_ops = &clk_ops;
 	handle->clk_priv = cinfo;
 

drivers/firmware/arm_scmi/common.h

···
 /**
  * struct scmi_xfer - Structure representing a message flow
  *
+ * @transfer_id: Unique ID for debug & profiling purpose
  * @hdr: Transmit message header
  * @tx: Transmit message
  * @rx: Receive message, the buffer should be pre-allocated to store
···
  * @async: pointer to delayed response message received event completion
  */
 struct scmi_xfer {
+	int transfer_id;
 	struct scmi_msg_hdr hdr;
 	struct scmi_msg tx;
 	struct scmi_msg rx;

drivers/firmware/arm_scmi/driver.c

···
 
 #include "common.h"
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/scmi.h>
+
 #define MSG_ID_MASK		GENMASK(7, 0)
 #define MSG_XTRACT_ID(hdr)	FIELD_GET(MSG_ID_MASK, (hdr))
 #define MSG_TYPE_MASK		GENMASK(9, 8)
···
 static LIST_HEAD(scmi_list);
 /* Protection for the entire list */
 static DEFINE_MUTEX(scmi_list_mutex);
+/* Track the unique id for the transfers for debug & profiling purpose */
+static atomic_t transfer_last_id;
 
 /**
  * struct scmi_xfers_info - Structure to manage transfer information
···
 	xfer = &minfo->xfer_block[xfer_id];
 	xfer->hdr.seq = xfer_id;
 	reinit_completion(&xfer->done);
+	xfer->transfer_id = atomic_inc_return(&transfer_last_id);
 
 	return xfer;
 }
···
 
 	scmi_fetch_response(xfer, mem);
 
+	trace_scmi_rx_done(xfer->transfer_id, xfer->hdr.id,
+			   xfer->hdr.protocol_id, xfer->hdr.seq,
+			   msg_type);
+
 	if (msg_type == MSG_TYPE_DELAYED_RESP)
 		complete(xfer->async_done);
 	else
···
 	if (unlikely(!cinfo))
 		return -EINVAL;
 
+	trace_scmi_xfer_begin(xfer->transfer_id, xfer->hdr.id,
+			      xfer->hdr.protocol_id, xfer->hdr.seq,
+			      xfer->hdr.poll_completion);
+
 	ret = mbox_send_message(cinfo->chan, xfer);
 	if (ret < 0) {
 		dev_dbg(dev, "mbox send fail %d\n", ret);
···
 	 * received our message.
 	 */
 	mbox_client_txdone(cinfo->chan, ret);
+
+	trace_scmi_xfer_end(xfer->transfer_id, xfer->hdr.id,
+			    xfer->hdr.protocol_id, xfer->hdr.seq,
+			    xfer->hdr.status);
 
 	return ret;
 }
···
 	idx = tx ? 0 : 1;
 	idr = tx ? &info->tx_idr : &info->rx_idr;
 
+	/* check if already allocated, used for multiple device per protocol */
+	cinfo = idr_find(idr, prot_id);
+	if (cinfo)
+		return 0;
+
 	if (scmi_mailbox_check(np, idx)) {
 		cinfo = idr_find(idr, SCMI_PROTOCOL_BASE);
 		if (unlikely(!cinfo)) /* Possible only if platform has no Rx */
···
 
 static inline void
 scmi_create_protocol_device(struct device_node *np, struct scmi_info *info,
-			    int prot_id)
+			    int prot_id, const char *name)
 {
 	struct scmi_device *sdev;
 
-	sdev = scmi_device_create(np, info->dev, prot_id);
+	sdev = scmi_device_create(np, info->dev, prot_id, name);
 	if (!sdev) {
 		dev_err(info->dev, "failed to create %d protocol device\n",
 			prot_id);
···
 
 	/* setup handle now as the transport is ready */
 	scmi_set_handle(sdev);
+}
+
+#define MAX_SCMI_DEV_PER_PROTOCOL	2
+struct scmi_prot_devnames {
+	int protocol_id;
+	char *names[MAX_SCMI_DEV_PER_PROTOCOL];
+};
+
+static struct scmi_prot_devnames devnames[] = {
+	{ SCMI_PROTOCOL_POWER,  { "genpd" },},
+	{ SCMI_PROTOCOL_PERF,   { "cpufreq" },},
+	{ SCMI_PROTOCOL_CLOCK,  { "clocks" },},
+	{ SCMI_PROTOCOL_SENSOR, { "hwmon" },},
+	{ SCMI_PROTOCOL_RESET,  { "reset" },},
+};
+
+static inline void
+scmi_create_protocol_devices(struct device_node *np, struct scmi_info *info,
+			     int prot_id)
+{
+	int loop, cnt;
+
+	for (loop = 0; loop < ARRAY_SIZE(devnames); loop++) {
+		if (devnames[loop].protocol_id != prot_id)
+			continue;
+
+		for (cnt = 0; cnt < ARRAY_SIZE(devnames[loop].names); cnt++) {
+			const char *name = devnames[loop].names[cnt];
+
+			if (name)
+				scmi_create_protocol_device(np, info, prot_id,
+							    name);
+		}
+	}
 }
 
 static int scmi_probe(struct platform_device *pdev)
···
 			continue;
 		}
 
-		scmi_create_protocol_device(child, info, prot_id);
+		scmi_create_protocol_devices(child, info, prot_id);
 	}
 
 	return 0;
···
 	return ret;
 }
 
+static ssize_t protocol_version_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%u.%u\n", info->version.major_ver,
+		       info->version.minor_ver);
+}
+static DEVICE_ATTR_RO(protocol_version);
+
+static ssize_t firmware_version_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "0x%x\n", info->version.impl_ver);
+}
+static DEVICE_ATTR_RO(firmware_version);
+
+static ssize_t vendor_id_show(struct device *dev,
+			      struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", info->version.vendor_id);
+}
+static DEVICE_ATTR_RO(vendor_id);
+
+static ssize_t sub_vendor_id_show(struct device *dev,
+				  struct device_attribute *attr, char *buf)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return sprintf(buf, "%s\n", info->version.sub_vendor_id);
+}
+static DEVICE_ATTR_RO(sub_vendor_id);
+
+static struct attribute *versions_attrs[] = {
+	&dev_attr_firmware_version.attr,
+	&dev_attr_protocol_version.attr,
+	&dev_attr_vendor_id.attr,
+	&dev_attr_sub_vendor_id.attr,
+	NULL,
+};
+ATTRIBUTE_GROUPS(versions);
+
 static const struct scmi_desc scmi_generic_desc = {
 	.max_rx_timeout_ms = 30,	/* We may increase this if required */
 	.max_msg = 20,		/* Limited by MBOX_TX_QUEUE_LEN */
···
 	.driver = {
 		   .name = "arm-scmi",
 		   .of_match_table = scmi_of_match,
+		   .dev_groups = versions_groups,
 		   },
 	.probe = scmi_probe,
 	.remove = scmi_remove,

drivers/firmware/arm_scmi/perf.c

···
 };
 
 struct scmi_perf_info {
+	u32 version;
 	int num_domains;
 	bool power_scale_mw;
 	u64 stats_addr;
···
 			scmi_perf_domain_init_fc(handle, domain, &dom->fc_info);
 	}
 
+	pinfo->version = version;
 	handle->perf_ops = &perf_ops;
 	handle->perf_priv = pinfo;
 

drivers/firmware/arm_scmi/power.c

···
 };
 
 struct scmi_power_info {
+	u32 version;
 	int num_domains;
 	u64 stats_addr;
 	u32 stats_size;
···
 		scmi_power_domain_attributes_get(handle, domain, dom);
 	}
 
+	pinfo->version = version;
 	handle->power_ops = &power_ops;
 	handle->power_priv = pinfo;
 

drivers/firmware/arm_scmi/reset.c

···
 };
 
 struct scmi_reset_info {
+	u32 version;
 	int num_domains;
 	struct reset_dom_info *dom_info;
 };
···
 		scmi_reset_domain_attributes_get(handle, domain, dom);
 	}
 
+	pinfo->version = version;
 	handle->reset_ops = &reset_ops;
 	handle->reset_priv = pinfo;
 

drivers/firmware/arm_scmi/scmi_pm_domain.c

···
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_POWER },
+	{ SCMI_PROTOCOL_POWER, "genpd" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);

drivers/firmware/arm_scmi/sensors.c

···
 };
 
 struct sensors_info {
+	u32 version;
 	int num_sensors;
 	int max_requests;
 	u64 reg_addr;
···
 
 	scmi_sensor_description_get(handle, sinfo);
 
+	sinfo->version = version;
 	handle->sensor_ops = &sensor_ops;
 	handle->sensor_priv = sinfo;
 

drivers/firmware/imx/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0-only
 config IMX_DSP
-	bool "IMX DSP Protocol driver"
+	tristate "IMX DSP Protocol driver"
 	depends on IMX_MBOX
 	help
 	  This enables DSP IPC protocol between host AP (Linux)

drivers/firmware/psci/psci.c

···
 				PSCI_1_0_FEATURES_CPU_SUSPEND_PF_MASK;
 }
 
-static inline bool psci_has_osi_support(void)
+bool psci_has_osi_support(void)
 {
 	return psci_cpu_suspend_feature & PSCI_1_0_OS_INITIATED;
 }
···
 static u32 psci_get_version(void)
 {
 	return invoke_psci_fn(PSCI_0_2_FN_PSCI_VERSION, 0, 0, 0);
+}
+
+int psci_set_osi_mode(void)
+{
+	int err;
+
+	err = invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE,
+			     PSCI_1_0_SUSPEND_MODE_OSI, 0, 0);
+	return psci_to_linux_errno(err);
 }
 
 static int psci_cpu_suspend(u32 state, unsigned long entry_point)
···
 	if (err)
 		return err;
 
-	if (psci_has_osi_support())
+	if (psci_has_osi_support()) {
 		pr_info("OSI mode supported.\n");
+
+		/* Default to PC mode. */
+		invoke_psci_fn(PSCI_1_0_FN_SET_SUSPEND_MODE,
+			       PSCI_1_0_SUSPEND_MODE_PC, 0, 0);
+	}
 
 	return 0;
 }

drivers/firmware/qcom_scm-32.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
- * Copyright (C) 2015 Linaro Ltd.
- */
-
-#include <linux/slab.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/qcom_scm.h>
-#include <linux/dma-mapping.h>
-
-#include "qcom_scm.h"
-
-#define QCOM_SCM_FLAG_COLDBOOT_CPU0	0x00
-#define QCOM_SCM_FLAG_COLDBOOT_CPU1	0x01
-#define QCOM_SCM_FLAG_COLDBOOT_CPU2	0x08
-#define QCOM_SCM_FLAG_COLDBOOT_CPU3	0x20
-
-#define QCOM_SCM_FLAG_WARMBOOT_CPU0	0x04
-#define QCOM_SCM_FLAG_WARMBOOT_CPU1	0x02
-#define QCOM_SCM_FLAG_WARMBOOT_CPU2	0x10
-#define QCOM_SCM_FLAG_WARMBOOT_CPU3	0x40
-
-struct qcom_scm_entry {
-	int flag;
-	void *entry;
-};
-
-static struct qcom_scm_entry qcom_scm_wb[] = {
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU0 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU1 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU2 },
-	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU3 },
-};
-
-static DEFINE_MUTEX(qcom_scm_lock);
-
-/**
- * struct qcom_scm_command - one SCM command buffer
- * @len: total available memory for command and response
- * @buf_offset: start of command buffer
- * @resp_hdr_offset: start of response buffer
- * @id: command to be executed
- * @buf: buffer returned from qcom_scm_get_command_buffer()
- *
- * An SCM command is laid out in memory as follows:
- *
- *	------------------- <--- struct qcom_scm_command
- *	| command header  |
- *	------------------- <--- qcom_scm_get_command_buffer()
- *	| command buffer  |
- *	------------------- <--- struct qcom_scm_response and
- *	| response header |      qcom_scm_command_to_response()
- *	------------------- <--- qcom_scm_get_response_buffer()
- *	| response buffer |
- *	-------------------
- *
- * There can be arbitrary padding between the headers and buffers so
- * you should always use the appropriate qcom_scm_get_*_buffer() routines
- * to access the buffers in a safe manner.
- */
-struct qcom_scm_command {
-	__le32 len;
-	__le32 buf_offset;
-	__le32 resp_hdr_offset;
-	__le32 id;
-	__le32 buf[0];
-};
-
-/**
- * struct qcom_scm_response - one SCM response buffer
- * @len: total available memory for response
- * @buf_offset: start of response data relative to start of qcom_scm_response
- * @is_complete: indicates if the command has finished processing
- */
-struct qcom_scm_response {
-	__le32 len;
-	__le32 buf_offset;
-	__le32 is_complete;
-};
-
-/**
- * qcom_scm_command_to_response() - Get a pointer to a qcom_scm_response
- * @cmd: command
- *
- * Returns a pointer to a response for a command.
- */
-static inline struct qcom_scm_response *qcom_scm_command_to_response(
-		const struct qcom_scm_command *cmd)
-{
-	return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
-}
-
-/**
- * qcom_scm_get_command_buffer() - Get a pointer to a command buffer
- * @cmd: command
- *
- * Returns a pointer to the command buffer of a command.
- */
-static inline void *qcom_scm_get_command_buffer(const struct qcom_scm_command *cmd)
-{
-	return (void *)cmd->buf;
-}
-
-/**
- * qcom_scm_get_response_buffer() - Get a pointer to a response buffer
- * @rsp: response
- *
- * Returns a pointer to a response buffer of a response.
- */
-static inline void *qcom_scm_get_response_buffer(const struct qcom_scm_response *rsp)
-{
-	return (void *)rsp + le32_to_cpu(rsp->buf_offset);
-}
-
-static u32 smc(u32 cmd_addr)
-{
-	int context_id;
-	register u32 r0 asm("r0") = 1;
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = cmd_addr;
-	do {
-		asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc	#0	@ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3", "r12");
-	} while (r0 == QCOM_SCM_INTERRUPTED);
-
-	return r0;
-}
-
-/**
- * qcom_scm_call() - Send an SCM command
- * @dev: struct device
- * @svc_id: service identifier
- * @cmd_id: command identifier
- * @cmd_buf: command buffer
- * @cmd_len: length of the command buffer
- * @resp_buf: response buffer
- * @resp_len: length of the response buffer
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- *
- * A note on cache maintenance:
- * Note that any buffers that are expected to be accessed by the secure world
- * must be flushed before invoking qcom_scm_call and invalidated in the cache
- * immediately after qcom_scm_call returns. Cache maintenance on the command
- * and response buffers is taken care of by qcom_scm_call; however, callers are
- * responsible for any other cached buffers passed over to the secure world.
- */
-static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			 const void *cmd_buf, size_t cmd_len, void *resp_buf,
-			 size_t resp_len)
-{
-	int ret;
-	struct qcom_scm_command *cmd;
-	struct qcom_scm_response *rsp;
-	size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
-	dma_addr_t cmd_phys;
-
-	cmd = kzalloc(PAGE_ALIGN(alloc_len), GFP_KERNEL);
-	if (!cmd)
-		return -ENOMEM;
-
-	cmd->len = cpu_to_le32(alloc_len);
-	cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
-	cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
-
-	cmd->id = cpu_to_le32((svc_id << 10) | cmd_id);
-	if (cmd_buf)
-		memcpy(qcom_scm_get_command_buffer(cmd), cmd_buf, cmd_len);
-
-	rsp = qcom_scm_command_to_response(cmd);
-
-	cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
-	if (dma_mapping_error(dev, cmd_phys)) {
-		kfree(cmd);
-		return -ENOMEM;
-	}
-
-	mutex_lock(&qcom_scm_lock);
-	ret = smc(cmd_phys);
-	if (ret < 0)
-		ret = qcom_scm_remap_error(ret);
-	mutex_unlock(&qcom_scm_lock);
-	if (ret)
-		goto out;
-
-	do {
-		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len,
-					sizeof(*rsp), DMA_FROM_DEVICE);
-	} while (!rsp->is_complete);
-
-	if (resp_buf) {
-		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
-					le32_to_cpu(rsp->buf_offset),
-					resp_len, DMA_FROM_DEVICE);
-		memcpy(resp_buf, qcom_scm_get_response_buffer(rsp),
-		       resp_len);
-	}
-out:
-	dma_unmap_single(dev, cmd_phys, alloc_len, DMA_TO_DEVICE);
-	kfree(cmd);
-	return ret;
-}
-
-#define SCM_CLASS_REGISTER	(0x2 << 8)
-#define SCM_MASK_IRQS		BIT(5)
-#define SCM_ATOMIC(svc, cmd, n) (((((svc) << 10)|((cmd) & 0x3ff)) << 12) | \
-				SCM_CLASS_REGISTER | \
-				SCM_MASK_IRQS | \
-				(n & 0xf))
-
-/**
- * qcom_scm_call_atomic1() - Send an atomic SCM command with one argument
- * @svc_id: service identifier
- * @cmd_id: command identifier
- * @arg1: first argument
- *
- * This shall only be used with commands that are guaranteed to be
- * uninterruptable, atomic and SMP safe.
- */
-static s32 qcom_scm_call_atomic1(u32 svc, u32 cmd, u32 arg1)
-{
-	int context_id;
-
-	register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 1);
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = arg1;
-
-	asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc    #0      @ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2)
-			: "r3", "r12");
-	return r0;
-}
-
-/**
- * qcom_scm_call_atomic2() - Send an atomic SCM command with two arguments
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @arg1:	first argument
- * @arg2:	second argument
- *
- * This shall only be used with commands that are guaranteed to be
- * uninterruptable, atomic and SMP safe.
- */
-static s32 qcom_scm_call_atomic2(u32 svc, u32 cmd, u32 arg1, u32 arg2)
-{
-	int context_id;
-
-	register u32 r0 asm("r0") = SCM_ATOMIC(svc, cmd, 2);
-	register u32 r1 asm("r1") = (u32)&context_id;
-	register u32 r2 asm("r2") = arg1;
-	register u32 r3 asm("r3") = arg2;
-
-	asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r0")
-			__asmeq("%2", "r1")
-			__asmeq("%3", "r2")
-			__asmeq("%4", "r3")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc    #0      @ switch to secure world\n"
-			: "=r" (r0)
-			: "r" (r0), "r" (r1), "r" (r2), "r" (r3)
-			: "r12");
-	return r0;
-}
-
-u32 qcom_scm_get_version(void)
-{
-	int context_id;
-	static u32 version = -1;
-	register u32 r0 asm("r0");
-	register u32 r1 asm("r1");
-
-	if (version != -1)
-		return version;
-
-	mutex_lock(&qcom_scm_lock);
-
-	r0 = 0x1 << 8;
-	r1 = (u32)&context_id;
-	do {
-		asm volatile(
-			__asmeq("%0", "r0")
-			__asmeq("%1", "r1")
-			__asmeq("%2", "r0")
-			__asmeq("%3", "r1")
-#ifdef REQUIRES_SEC
-			".arch_extension sec\n"
-#endif
-			"smc	#0	@ switch to secure world\n"
-			: "=r" (r0), "=r" (r1)
-			: "r" (r0), "r" (r1)
-			: "r2", "r3", "r12");
-	} while (r0 == QCOM_SCM_INTERRUPTED);
-
-	version = r1;
-	mutex_unlock(&qcom_scm_lock);
-
-	return version;
-}
-EXPORT_SYMBOL(qcom_scm_get_version);
-
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	int flags = 0;
-	int cpu;
-	int scm_cb_flags[] = {
-		QCOM_SCM_FLAG_COLDBOOT_CPU0,
-		QCOM_SCM_FLAG_COLDBOOT_CPU1,
-		QCOM_SCM_FLAG_COLDBOOT_CPU2,
-		QCOM_SCM_FLAG_COLDBOOT_CPU3,
-	};
-
-	if (!cpus || (cpus && cpumask_empty(cpus)))
-		return -EINVAL;
-
-	for_each_cpu(cpu, cpus) {
-		if (cpu < ARRAY_SIZE(scm_cb_flags))
-			flags |= scm_cb_flags[cpu];
-		else
-			set_cpu_present(cpu, false);
-	}
-
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_BOOT, QCOM_SCM_BOOT_ADDR,
-				    flags, virt_to_phys(entry));
-}
-
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-				  const cpumask_t *cpus)
-{
-	int ret;
-	int flags = 0;
-	int cpu;
-	struct {
-		__le32 flags;
-		__le32 addr;
-	} cmd;
-
-	/*
-	 * Reassign only if we are switching from hotplug entry point
-	 * to cpuidle entry point or vice versa.
-	 */
-	for_each_cpu(cpu, cpus) {
-		if (entry == qcom_scm_wb[cpu].entry)
-			continue;
-		flags |= qcom_scm_wb[cpu].flag;
-	}
-
-	/* No change in entry function */
-	if (!flags)
-		return 0;
-
-	cmd.addr = cpu_to_le32(virt_to_phys(entry));
-	cmd.flags = cpu_to_le32(flags);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_BOOT_ADDR,
-			    &cmd, sizeof(cmd), NULL, 0);
-	if (!ret) {
-		for_each_cpu(cpu, cpus)
-			qcom_scm_wb[cpu].entry = entry;
-	}
-
-	return ret;
-}
-
-/**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags - Flags to flush cache
- *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
- */
-void __qcom_scm_cpu_power_down(u32 flags)
-{
-	qcom_scm_call_atomic1(QCOM_SCM_SVC_BOOT, QCOM_SCM_CMD_TERMINATE_PC,
-			flags & QCOM_SCM_FLUSH_FLAG_MASK);
-}
-
-int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
-{
-	int ret;
-	__le32 svc_cmd = cpu_to_le32((svc_id << 10) | cmd_id);
-	__le32 ret_val = 0;
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
-			    &svc_cmd, sizeof(svc_cmd), &ret_val,
-			    sizeof(ret_val));
-	if (ret)
-		return ret;
-
-	return le32_to_cpu(ret_val);
-}
-
-int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req,
-			u32 req_cnt, u32 *resp)
-{
-	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
-		return -ERANGE;
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_HDCP, QCOM_SCM_CMD_HDCP,
-		req, req_cnt * sizeof(*req), resp, sizeof(*resp));
-}
-
-int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset, u32 size,
-			  u32 mode)
-{
-	struct ocmem_tz_lock {
-		__le32 id;
-		__le32 offset;
-		__le32 size;
-		__le32 mode;
-	} request;
-
-	request.id = cpu_to_le32(id);
-	request.offset = cpu_to_le32(offset);
-	request.size = cpu_to_le32(size);
-	request.mode = cpu_to_le32(mode);
-
-	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_LOCK_CMD,
-			     &request, sizeof(request), NULL, 0);
-}
-
-int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset, u32 size)
-{
-	struct ocmem_tz_unlock {
-		__le32 id;
-		__le32 offset;
-		__le32 size;
-	} request;
-
-	request.id = cpu_to_le32(id);
-	request.offset = cpu_to_le32(offset);
-	request.size = cpu_to_le32(size);
-
-	return qcom_scm_call(dev, QCOM_SCM_OCMEM_SVC, QCOM_SCM_OCMEM_UNLOCK_CMD,
-			     &request, sizeof(request), NULL, 0);
-}
-
-void __qcom_scm_init(void)
-{
-}
-
-bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_IS_SUPPORTED_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? false : !!out;
-}
-
-int __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-			      dma_addr_t metadata_phys)
-{
-	__le32 scm_ret;
-	int ret;
-	struct {
-		__le32 proc;
-		__le32 image_addr;
-	} request;
-
-	request.proc = cpu_to_le32(peripheral);
-	request.image_addr = cpu_to_le32(metadata_phys);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_INIT_IMAGE_CMD,
-			    &request, sizeof(request),
-			    &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-int __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-			     phys_addr_t addr, phys_addr_t size)
-{
-	__le32 scm_ret;
-	int ret;
-	struct {
-		__le32 proc;
-		__le32 addr;
-		__le32 len;
-	} request;
-
-	request.proc = cpu_to_le32(peripheral);
-	request.addr = cpu_to_le32(addr);
-	request.len = cpu_to_le32(size);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_MEM_SETUP_CMD,
-			    &request, sizeof(request),
-			    &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-int __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_AUTH_AND_RESET_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral)
-{
-	__le32 out;
-	__le32 in;
-	int ret;
-
-	in = cpu_to_le32(peripheral);
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-			    QCOM_SCM_PAS_SHUTDOWN_CMD,
-			    &in, sizeof(in),
-			    &out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
-{
-	__le32 out;
-	__le32 in = cpu_to_le32(reset);
-	int ret;
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MSS_RESET,
-			&in, sizeof(in),
-			&out, sizeof(out));
-
-	return ret ? : le32_to_cpu(out);
-}
-
-int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
-{
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE,
-				     enable ? QCOM_SCM_SET_DLOAD_MODE : 0, 0);
-}
-
-int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
-{
-	struct {
-		__le32 state;
-		__le32 id;
-	} req;
-	__le32 scm_ret = 0;
-	int ret;
-
-	req.state = cpu_to_le32(state);
-	req.id = cpu_to_le32(id);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_REMOTE_STATE,
-			    &req, sizeof(req), &scm_ret, sizeof(scm_ret));
-
-	return ret ? : le32_to_cpu(scm_ret);
-}
-
-int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
-			  size_t mem_sz, phys_addr_t src, size_t src_sz,
-			  phys_addr_t dest, size_t dest_sz)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
-			       u32 spare)
-{
-	struct msm_scm_sec_cfg {
-		__le32 id;
-		__le32 ctx_bank_num;
-	} cfg;
-	int ret, scm_ret = 0;
-
-	cfg.id = cpu_to_le32(device_id);
-	cfg.ctx_bank_num = cpu_to_le32(spare);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP, QCOM_SCM_RESTORE_SEC_CFG,
-			    &cfg, sizeof(cfg), &scm_ret, sizeof(scm_ret));
-
-	if (ret || scm_ret)
-		return ret ? ret : -EINVAL;
-
-	return 0;
-}
-
-int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-				      size_t *size)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size,
-				      u32 spare)
-{
-	return -ENODEV;
-}
-
-int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr,
-			unsigned int *val)
-{
-	int ret;
-
-	ret = qcom_scm_call_atomic1(QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ, addr);
-	if (ret >= 0)
-		*val = ret;
-
-	return ret < 0 ? ret : 0;
-}
-
-int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val)
-{
-	return qcom_scm_call_atomic2(QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE,
-				     addr, val);
-}
-
-int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev, bool enable)
-{
-	return -ENODEV;
-}

drivers/firmware/qcom_scm-64.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
- */
-
-#include <linux/io.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/types.h>
-#include <linux/qcom_scm.h>
-#include <linux/arm-smccc.h>
-#include <linux/dma-mapping.h>
-
-#include "qcom_scm.h"
-
-#define QCOM_SCM_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF))
-
-#define MAX_QCOM_SCM_ARGS 10
-#define MAX_QCOM_SCM_RETS 3
-
-enum qcom_scm_arg_types {
-	QCOM_SCM_VAL,
-	QCOM_SCM_RO,
-	QCOM_SCM_RW,
-	QCOM_SCM_BUFVAL,
-};
-
-#define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\
-			   (((a) & 0x3) << 4) | \
-			   (((b) & 0x3) << 6) | \
-			   (((c) & 0x3) << 8) | \
-			   (((d) & 0x3) << 10) | \
-			   (((e) & 0x3) << 12) | \
-			   (((f) & 0x3) << 14) | \
-			   (((g) & 0x3) << 16) | \
-			   (((h) & 0x3) << 18) | \
-			   (((i) & 0x3) << 20) | \
-			   (((j) & 0x3) << 22) | \
-			   ((num) & 0xf))
-
-#define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
-
-/**
- * struct qcom_scm_desc
- * @arginfo:	Metadata describing the arguments in args[]
- * @args:	The array of arguments for the secure syscall
- * @res:	The values returned by the secure syscall
- */
-struct qcom_scm_desc {
-	u32 arginfo;
-	u64 args[MAX_QCOM_SCM_ARGS];
-};
-
-static u64 qcom_smccc_convention = -1;
-static DEFINE_MUTEX(qcom_scm_lock);
-
-#define QCOM_SCM_EBUSY_WAIT_MS 30
-#define QCOM_SCM_EBUSY_MAX_RETRY 20
-
-#define N_EXT_QCOM_SCM_ARGS 7
-#define FIRST_EXT_ARG_IDX 3
-#define N_REGISTER_ARGS (MAX_QCOM_SCM_ARGS - N_EXT_QCOM_SCM_ARGS + 1)
-
-static void __qcom_scm_call_do(const struct qcom_scm_desc *desc,
-			       struct arm_smccc_res *res, u32 fn_id,
-			       u64 x5, u32 type)
-{
-	u64 cmd;
-	struct arm_smccc_quirk quirk = { .id = ARM_SMCCC_QUIRK_QCOM_A6 };
-
-	cmd = ARM_SMCCC_CALL_VAL(type, qcom_smccc_convention,
-				 ARM_SMCCC_OWNER_SIP, fn_id);
-
-	quirk.state.a6 = 0;
-
-	do {
-		arm_smccc_smc_quirk(cmd, desc->arginfo, desc->args[0],
-				    desc->args[1], desc->args[2], x5,
-				    quirk.state.a6, 0, res, &quirk);
-
-		if (res->a0 == QCOM_SCM_INTERRUPTED)
-			cmd = res->a0;
-
-	} while (res->a0 == QCOM_SCM_INTERRUPTED);
-}
-
-static void qcom_scm_call_do(const struct qcom_scm_desc *desc,
-			     struct arm_smccc_res *res, u32 fn_id,
-			     u64 x5, bool atomic)
-{
-	int retry_count = 0;
-
-	if (atomic) {
-		__qcom_scm_call_do(desc, res, fn_id, x5, ARM_SMCCC_FAST_CALL);
-		return;
-	}
-
-	do {
-		mutex_lock(&qcom_scm_lock);
-
-		__qcom_scm_call_do(desc, res, fn_id, x5,
-				   ARM_SMCCC_STD_CALL);
-
-		mutex_unlock(&qcom_scm_lock);
-
-		if (res->a0 == QCOM_SCM_V2_EBUSY) {
-			if (retry_count++ > QCOM_SCM_EBUSY_MAX_RETRY)
-				break;
-			msleep(QCOM_SCM_EBUSY_WAIT_MS);
-		}
-	}  while (res->a0 == QCOM_SCM_V2_EBUSY);
-}
-
-static int ___qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			    const struct qcom_scm_desc *desc,
-			    struct arm_smccc_res *res, bool atomic)
-{
-	int arglen = desc->arginfo & 0xf;
-	int i;
-	u32 fn_id = QCOM_SCM_FNID(svc_id, cmd_id);
-	u64 x5 = desc->args[FIRST_EXT_ARG_IDX];
-	dma_addr_t args_phys = 0;
-	void *args_virt = NULL;
-	size_t alloc_len;
-	gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
-
-	if (unlikely(arglen > N_REGISTER_ARGS)) {
-		alloc_len = N_EXT_QCOM_SCM_ARGS * sizeof(u64);
-		args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag);
-
-		if (!args_virt)
-			return -ENOMEM;
-
-		if (qcom_smccc_convention == ARM_SMCCC_SMC_32) {
-			__le32 *args = args_virt;
-
-			for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
-				args[i] = cpu_to_le32(desc->args[i +
-						      FIRST_EXT_ARG_IDX]);
-		} else {
-			__le64 *args = args_virt;
-
-			for (i = 0; i < N_EXT_QCOM_SCM_ARGS; i++)
-				args[i] = cpu_to_le64(desc->args[i +
-						      FIRST_EXT_ARG_IDX]);
-		}
-
-		args_phys = dma_map_single(dev, args_virt, alloc_len,
-					   DMA_TO_DEVICE);
-
-		if (dma_mapping_error(dev, args_phys)) {
-			kfree(args_virt);
-			return -ENOMEM;
-		}
-
-		x5 = args_phys;
-	}
-
-	qcom_scm_call_do(desc, res, fn_id, x5, atomic);
-
-	if (args_virt) {
-		dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE);
-		kfree(args_virt);
-	}
-
-	if ((long)res->a0 < 0)
-		return qcom_scm_remap_error(res->a0);
-
-	return 0;
-}
-
-/**
- * qcom_scm_call() - Invoke a syscall in the secure world
- * @dev:	device
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @desc:	Descriptor structure containing arguments and return values
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This should *only* be called in pre-emptible context.
- */
-static int qcom_scm_call(struct device *dev, u32 svc_id, u32 cmd_id,
-			 const struct qcom_scm_desc *desc,
-			 struct arm_smccc_res *res)
-{
-	might_sleep();
-	return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, false);
-}
-
-/**
- * qcom_scm_call_atomic() - atomic variation of qcom_scm_call()
- * @dev:	device
- * @svc_id:	service identifier
- * @cmd_id:	command identifier
- * @desc:	Descriptor structure containing arguments and return values
- * @res:	Structure containing results from SMC/HVC call
- *
- * Sends a command to the SCM and waits for the command to finish processing.
- * This can be called in atomic context.
- */
-static int qcom_scm_call_atomic(struct device *dev, u32 svc_id, u32 cmd_id,
-				const struct qcom_scm_desc *desc,
-				struct arm_smccc_res *res)
-{
-	return ___qcom_scm_call(dev, svc_id, cmd_id, desc, res, true);
-}
-
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	return -ENOTSUPP;
-}
-
-/**
- * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
- * @dev: Device pointer
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the Linux entry point for the SCM to transfer control to when coming
- * out of a power down. CPU power down may be executed on cpuidle or hotplug.
- */
-int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-				  const cpumask_t *cpus)
-{
-	return -ENOTSUPP;
-}
-
-/**
- * qcom_scm_cpu_power_down() - Power down the cpu
- * @flags - Flags to flush cache
- *
- * This is an end point to power down cpu. If there was a pending interrupt,
- * the control would return from this function, otherwise, the cpu jumps to the
- * warm boot entry point set for this cpu upon reset.
- */
-void __qcom_scm_cpu_power_down(u32 flags)
-{
-}
-
-int __qcom_scm_is_call_available(struct device *dev, u32 svc_id, u32 cmd_id)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.arginfo = QCOM_SCM_ARGS(1);
-	desc.args[0] = QCOM_SCM_FNID(svc_id, cmd_id) |
-			(ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_hdcp_req(struct device *dev, struct qcom_scm_hdcp_req *req,
-			u32 req_cnt, u32 *resp)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
-		return -ERANGE;
-
-	desc.args[0] = req[0].addr;
-	desc.args[1] = req[0].val;
-	desc.args[2] = req[1].addr;
-	desc.args[3] = req[1].val;
-	desc.args[4] = req[2].addr;
-	desc.args[5] = req[2].val;
-	desc.args[6] = req[3].addr;
-	desc.args[7] = req[3].val;
-	desc.args[8] = req[4].addr;
-	desc.args[9] = req[4].val;
-	desc.arginfo = QCOM_SCM_ARGS(10);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_HDCP, QCOM_SCM_CMD_HDCP, &desc,
-			    &res);
-	*resp = res.a1;
-
-	return ret;
-}
-
-int __qcom_scm_ocmem_lock(struct device *dev, uint32_t id, uint32_t offset,
-			  uint32_t size, uint32_t mode)
-{
-	return -ENOTSUPP;
-}
-
-int __qcom_scm_ocmem_unlock(struct device *dev, uint32_t id, uint32_t offset,
-			    uint32_t size)
-{
-	return -ENOTSUPP;
-}
-
-void __qcom_scm_init(void)
-{
-	u64 cmd;
-	struct arm_smccc_res res;
-	u32 function = QCOM_SCM_FNID(QCOM_SCM_SVC_INFO, QCOM_IS_CALL_AVAIL_CMD);
-
-	/* First try a SMC64 call */
-	cmd = ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, ARM_SMCCC_SMC_64,
-				 ARM_SMCCC_OWNER_SIP, function);
-
-	arm_smccc_smc(cmd, QCOM_SCM_ARGS(1), cmd & (~BIT(ARM_SMCCC_TYPE_SHIFT)),
-		      0, 0, 0, 0, 0, &res);
-
-	if (!res.a0 && res.a1)
-		qcom_smccc_convention = ARM_SMCCC_SMC_64;
-	else
-		qcom_smccc_convention = ARM_SMCCC_SMC_32;
-}
-
-bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-				QCOM_SCM_PAS_IS_SUPPORTED_CMD,
-				&desc, &res);
-
-	return ret ? false : !!res.a1;
-}
-
-int __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-			      dma_addr_t metadata_phys)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.args[1] = metadata_phys;
-	desc.arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_INIT_IMAGE_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-			      phys_addr_t addr, phys_addr_t size)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.args[1] = addr;
-	desc.args[2] = size;
-	desc.arginfo = QCOM_SCM_ARGS(3);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MEM_SETUP_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL,
-				QCOM_SCM_PAS_AUTH_AND_RESET_CMD,
-				&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = peripheral;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_SHUTDOWN_CMD,
-			&desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = reset;
-	desc.args[1] = 0;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_PIL, QCOM_SCM_PAS_MSS_RESET, &desc,
-			    &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = state;
-	desc.args[1] = id;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_REMOTE_STATE,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
-			  size_t mem_sz, phys_addr_t src, size_t src_sz,
-			  phys_addr_t dest, size_t dest_sz)
-{
-	int ret;
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = mem_region;
-	desc.args[1] = mem_sz;
-	desc.args[2] = src;
-	desc.args[3] = src_sz;
-	desc.args[4] = dest;
-	desc.args[5] = dest_sz;
-	desc.args[6] = 0;
-
-	desc.arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL,
-				     QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO,
-				     QCOM_SCM_VAL, QCOM_SCM_VAL);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_MEM_PROT_ASSIGN_ID,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id, u32 spare)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = device_id;
-	desc.args[1] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP, QCOM_SCM_RESTORE_SEC_CFG,
-			    &desc, &res);
-
-	return ret ? : res.a1;
-}
-
-int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-				      size_t *size)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_SCM_IOMMU_SECURE_PTBL_SIZE, &desc, &res);
-
-	if (size)
-		*size = res.a1;
-
-	return ret ? : res.a2;
-}
-
-int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr, u32 size,
-				      u32 spare)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = addr;
-	desc.args[1] = size;
-	desc.args[2] = spare;
-	desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
-				     QCOM_SCM_VAL);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_MP,
-			    QCOM_SCM_IOMMU_SECURE_PTBL_INIT, &desc, &res);
-
-	/* the pg table has been initialized already, ignore the error */
-	if (ret == -EPERM)
-		ret = 0;
-
-	return ret;
-}
-
-int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = QCOM_SCM_SET_DLOAD_MODE;
-	desc.args[1] = enable ? QCOM_SCM_SET_DLOAD_MODE : 0;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_BOOT, QCOM_SCM_SET_DLOAD_MODE,
-			     &desc, &res);
-}
-
-int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr,
-			unsigned int *val)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-	int ret;
-
-	desc.args[0] = addr;
-	desc.arginfo = QCOM_SCM_ARGS(1);
-
-	ret = qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_READ,
-			    &desc, &res);
-	if (ret >= 0)
-		*val = res.a1;
-
-	return ret < 0 ? ret : 0;
-}
-
-int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = addr;
-	desc.args[1] = val;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call(dev, QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE,
-			     &desc, &res);
-}
-
-int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev, bool en)
-{
-	struct qcom_scm_desc desc = {0};
-	struct arm_smccc_res res;
-
-	desc.args[0] = QCOM_SCM_CONFIG_ERRATA1_CLIENT_ALL;
-	desc.args[1] = en;
-	desc.arginfo = QCOM_SCM_ARGS(2);
-
-	return qcom_scm_call_atomic(dev, QCOM_SCM_SVC_SMMU_PROGRAM,
-				    QCOM_SCM_CONFIG_ERRATA1, &desc, &res);
-}

drivers/firmware/qcom_scm-legacy.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
+ * Copyright (C) 2015 Linaro Ltd.
+ */
+
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/qcom_scm.h>
+#include <linux/arm-smccc.h>
+#include <linux/dma-mapping.h>
+
+#include "qcom_scm.h"
+
+static DEFINE_MUTEX(qcom_scm_lock);
+
+
+/**
+ * struct arm_smccc_args
+ * @args:	The array of values used in registers in smc instruction
+ */
+struct arm_smccc_args {
+	unsigned long args[8];
+};
+
+
+/**
+ * struct scm_legacy_command - one SCM command buffer
+ * @len: total available memory for command and response
+ * @buf_offset: start of command buffer
+ * @resp_hdr_offset: start of response buffer
+ * @id: command to be executed
+ * @buf: buffer returned from scm_legacy_get_command_buffer()
+ *
+ * An SCM command is laid out in memory as follows:
+ *
+ *	------------------- <--- struct scm_legacy_command
+ *	| command header  |
+ *	------------------- <--- scm_legacy_get_command_buffer()
+ *	| command buffer  |
+ *	------------------- <--- struct scm_legacy_response and
+ *	| response header |      scm_legacy_command_to_response()
+ *	------------------- <--- scm_legacy_get_response_buffer()
+ *	| response buffer |
+ *	-------------------
+ *
+ * There can be arbitrary padding between the headers and buffers so
+ * you should always use the appropriate scm_legacy_get_*_buffer() routines
+ * to access the buffers in a safe manner.
+ */
+struct scm_legacy_command {
+	__le32 len;
+	__le32 buf_offset;
+	__le32 resp_hdr_offset;
+	__le32 id;
+	__le32 buf[0];
+};
+
+/**
+ * struct scm_legacy_response - one SCM response buffer
+ * @len: total available memory for response
+ * @buf_offset: start of response data relative to start of scm_legacy_response
+ * @is_complete: indicates if the command has finished processing
+ */
+struct scm_legacy_response {
+	__le32 len;
+	__le32 buf_offset;
+	__le32 is_complete;
+};
+
+/**
+ * scm_legacy_command_to_response() - Get a pointer to a scm_legacy_response
+ * @cmd: command
+ *
+ * Returns a pointer to a response for a command.
+ */
+static inline struct scm_legacy_response *scm_legacy_command_to_response(
+		const struct scm_legacy_command *cmd)
+{
+	return (void *)cmd + le32_to_cpu(cmd->resp_hdr_offset);
+}
+
+/**
+ * scm_legacy_get_command_buffer() - Get a pointer to a command buffer
+ * @cmd: command
+ *
+ * Returns a pointer to the command buffer of a command.
+ */
+static inline void *scm_legacy_get_command_buffer(
+		const struct scm_legacy_command *cmd)
+{
+	return (void *)cmd->buf;
+}
+
+/**
+ * scm_legacy_get_response_buffer() - Get a pointer to a response buffer
+ * @rsp: response
+ *
+ * Returns a pointer to a response buffer of a response.
+ */
+static inline void *scm_legacy_get_response_buffer(
+		const struct scm_legacy_response *rsp)
+{
+	return (void *)rsp + le32_to_cpu(rsp->buf_offset);
+}
+
+static void __scm_legacy_do(const struct arm_smccc_args *smc,
+			    struct arm_smccc_res *res)
+{
+	do {
+		arm_smccc_smc(smc->args[0], smc->args[1], smc->args[2],
+			      smc->args[3], smc->args[4], smc->args[5],
+			      smc->args[6], smc->args[7], res);
+	} while (res->a0 == QCOM_SCM_INTERRUPTED);
+}
+
+/**
+ * qcom_scm_call() - Sends a command to the SCM and waits for the command to
+ * finish processing.
+ *
+ * A note on cache maintenance:
+ * Note that any buffers that are expected to be accessed by the secure world
+ * must be flushed before invoking qcom_scm_call and invalidated in the cache
+ * immediately after qcom_scm_call returns. Cache maintenance on the command
+ * and response buffers is taken care of by qcom_scm_call; however, callers are
+ * responsible for any other cached buffers passed over to the secure world.
+ */
+int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
+		    struct qcom_scm_res *res)
+{
+	u8 arglen = desc->arginfo & 0xf;
+	int ret = 0, context_id;
+	unsigned int i;
+	struct scm_legacy_command *cmd;
+	struct scm_legacy_response *rsp;
+	struct arm_smccc_args smc = {0};
+	struct arm_smccc_res smc_res;
+	const size_t cmd_len = arglen * sizeof(__le32);
+	const size_t resp_len = MAX_QCOM_SCM_RETS * sizeof(__le32);
+	size_t alloc_len = sizeof(*cmd) + cmd_len + sizeof(*rsp) + resp_len;
+	dma_addr_t cmd_phys;
+	__le32 *arg_buf;
+	const __le32 *res_buf;
+
+	cmd = kzalloc(PAGE_ALIGN(alloc_len), GFP_KERNEL);
+	if (!cmd)
+		return -ENOMEM;
+
+	cmd->len = cpu_to_le32(alloc_len);
+	cmd->buf_offset = cpu_to_le32(sizeof(*cmd));
+	cmd->resp_hdr_offset = cpu_to_le32(sizeof(*cmd) + cmd_len);
+	cmd->id = cpu_to_le32(SCM_LEGACY_FNID(desc->svc, desc->cmd));
+
+	arg_buf = scm_legacy_get_command_buffer(cmd);
+	for (i = 0; i < arglen; i++)
+		arg_buf[i] = cpu_to_le32(desc->args[i]);
+
+	rsp = scm_legacy_command_to_response(cmd);
+
+	cmd_phys = dma_map_single(dev, cmd, alloc_len, DMA_TO_DEVICE);
+	if (dma_mapping_error(dev, cmd_phys)) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	smc.args[0] = 1;
+	smc.args[1] = (unsigned long)&context_id;
+	smc.args[2] = cmd_phys;
+
+	mutex_lock(&qcom_scm_lock);
+	__scm_legacy_do(&smc, &smc_res);
+	if (smc_res.a0)
+		ret = qcom_scm_remap_error(smc_res.a0);
+	mutex_unlock(&qcom_scm_lock);
+	if (ret)
+		goto out;
+
+	do {
+		dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len,
+					sizeof(*rsp), DMA_FROM_DEVICE);
+	} while (!rsp->is_complete);
+
+	dma_sync_single_for_cpu(dev, cmd_phys + sizeof(*cmd) + cmd_len +
+				le32_to_cpu(rsp->buf_offset),
+				resp_len, DMA_FROM_DEVICE);
+
+	if (res) {
+		res_buf = scm_legacy_get_response_buffer(rsp);
+		for (i = 0; i < MAX_QCOM_SCM_RETS; i++)
+			res->result[i] = le32_to_cpu(res_buf[i]);
+	}
+out:
+	dma_unmap_single(dev, cmd_phys, alloc_len, DMA_TO_DEVICE);
+	kfree(cmd);
+	return ret;
+}
+
+#define SCM_LEGACY_ATOMIC_N_REG_ARGS	5
+#define SCM_LEGACY_ATOMIC_FIRST_REG_IDX	2
+#define SCM_LEGACY_CLASS_REGISTER		(0x2 << 8)
+#define SCM_LEGACY_MASK_IRQS		BIT(5)
+#define SCM_LEGACY_ATOMIC_ID(svc, cmd, n) \
+				((SCM_LEGACY_FNID(svc, cmd) << 12) | \
+				SCM_LEGACY_CLASS_REGISTER | \
+				SCM_LEGACY_MASK_IRQS | \
+				(n & 0xf))
+
+/**
+ * qcom_scm_call_atomic() - Send an atomic SCM command with up to 5 arguments
+ * and 3 return values
+ * @desc: SCM call descriptor containing arguments
+ * @res:  SCM call return values
+ *
+ * This shall only be used with commands that are guaranteed to be
+ * uninterruptable, atomic and SMP safe.
+ */
+int scm_legacy_call_atomic(struct device *unused,
+			   const struct qcom_scm_desc *desc,
+			   struct qcom_scm_res *res)
+{
+	int context_id;
+	struct arm_smccc_res smc_res;
+	size_t arglen = desc->arginfo & 0xf;
+
+	BUG_ON(arglen > SCM_LEGACY_ATOMIC_N_REG_ARGS);
+
+	arm_smccc_smc(SCM_LEGACY_ATOMIC_ID(desc->svc, desc->cmd, arglen),
+		      (unsigned long)&context_id,
+		      desc->args[0], desc->args[1], desc->args[2],
+		      desc->args[3], desc->args[4], 0, &smc_res);
+
+	if (res) {
+		res->result[0] = smc_res.a1;
+		res->result[1] = smc_res.a2;
+		res->result[2] = smc_res.a3;
+	}
+
+	return smc_res.a0;
+}

drivers/firmware/qcom_scm-smc.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (c) 2015,2019 The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/qcom_scm.h>
+#include <linux/arm-smccc.h>
+#include <linux/dma-mapping.h>
+
+#include "qcom_scm.h"
+
+/**
+ * struct arm_smccc_args
+ * @args:	The array of values used in registers in smc instruction
+ */
+struct arm_smccc_args {
+	unsigned long args[8];
+};
+
+static DEFINE_MUTEX(qcom_scm_lock);
+
+#define QCOM_SCM_EBUSY_WAIT_MS 30
+#define QCOM_SCM_EBUSY_MAX_RETRY 20
+
+#define SCM_SMC_N_REG_ARGS	4
+#define SCM_SMC_FIRST_EXT_IDX	(SCM_SMC_N_REG_ARGS - 1)
+#define SCM_SMC_N_EXT_ARGS	(MAX_QCOM_SCM_ARGS - SCM_SMC_N_REG_ARGS + 1)
+#define SCM_SMC_FIRST_REG_IDX	2
+#define SCM_SMC_LAST_REG_IDX	(SCM_SMC_FIRST_REG_IDX + SCM_SMC_N_REG_ARGS - 1)
+
+static void __scm_smc_do_quirk(const struct arm_smccc_args *smc,
+			       struct arm_smccc_res *res)
+{
+	unsigned long a0 = smc->args[0];
+	struct arm_smccc_quirk quirk = { .id = ARM_SMCCC_QUIRK_QCOM_A6 };
+
+	quirk.state.a6 = 0;
+
+	do {
+		arm_smccc_smc_quirk(a0, smc->args[1], smc->args[2],
+				    smc->args[3], smc->args[4], smc->args[5],
+				    quirk.state.a6, smc->args[7], res, &quirk);
+
+		if (res->a0 == QCOM_SCM_INTERRUPTED)
+			a0 = res->a0;
+
+	} while (res->a0 == QCOM_SCM_INTERRUPTED);
+}
+
+static void __scm_smc_do(const struct arm_smccc_args *smc,
+			 struct arm_smccc_res *res, bool atomic)
+{
+	int retry_count = 0;
+
+	if (atomic) {
+		__scm_smc_do_quirk(smc, res);
+		return;
+	}
+
+	do {
+		mutex_lock(&qcom_scm_lock);
+
+		__scm_smc_do_quirk(smc, res);
+
+		mutex_unlock(&qcom_scm_lock);
+
+		if (res->a0 == QCOM_SCM_V2_EBUSY) {
+			if (retry_count++ > QCOM_SCM_EBUSY_MAX_RETRY)
+				break;
+			msleep(QCOM_SCM_EBUSY_WAIT_MS);
+		}
+	}  while (res->a0 == QCOM_SCM_V2_EBUSY);
+}
+
+int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
+		 struct qcom_scm_res *res, bool atomic)
+{
+	int arglen = desc->arginfo & 0xf;
+	int i;
+	dma_addr_t args_phys = 0;
+	void *args_virt = NULL;
+	size_t alloc_len;
+	gfp_t flag = atomic ? GFP_ATOMIC : GFP_KERNEL;
+	u32 smccc_call_type = atomic ? ARM_SMCCC_FAST_CALL : ARM_SMCCC_STD_CALL;
+	u32 qcom_smccc_convention =
+			(qcom_scm_convention == SMC_CONVENTION_ARM_32) ?
+			ARM_SMCCC_SMC_32 : ARM_SMCCC_SMC_64;
+	struct arm_smccc_res smc_res;
+	struct arm_smccc_args smc = {0};
+
+	smc.args[0] = ARM_SMCCC_CALL_VAL(
+		smccc_call_type,
+		qcom_smccc_convention,
+		desc->owner,
+		SCM_SMC_FNID(desc->svc, desc->cmd));
+	smc.args[1] = desc->arginfo;
+	for (i = 0; i < SCM_SMC_N_REG_ARGS; i++)
+		smc.args[i + SCM_SMC_FIRST_REG_IDX] = desc->args[i];
+
+	if (unlikely(arglen > SCM_SMC_N_REG_ARGS)) {
+		alloc_len = SCM_SMC_N_EXT_ARGS * sizeof(u64);
+		args_virt = kzalloc(PAGE_ALIGN(alloc_len), flag);
+
+		if (!args_virt)
+			return -ENOMEM;
+
+		if (qcom_smccc_convention == ARM_SMCCC_SMC_32) {
+			__le32 *args = args_virt;
+
+			for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
+				args[i] = cpu_to_le32(desc->args[i +
+						      SCM_SMC_FIRST_EXT_IDX]);
+		} else {
+			__le64 *args = args_virt;
+
+			for (i = 0; i < SCM_SMC_N_EXT_ARGS; i++)
+				args[i] = cpu_to_le64(desc->args[i +
+						      SCM_SMC_FIRST_EXT_IDX]);
+		}
+
+		args_phys = dma_map_single(dev, args_virt, alloc_len,
+					   DMA_TO_DEVICE);
+
+		if (dma_mapping_error(dev, args_phys)) {
+			kfree(args_virt);
+			return -ENOMEM;
+		}
+
+		smc.args[SCM_SMC_LAST_REG_IDX] = args_phys;
+	}
+
+	__scm_smc_do(&smc, &smc_res, atomic);
+
+	if (args_virt) {
+		dma_unmap_single(dev, args_phys, alloc_len, DMA_TO_DEVICE);
+		kfree(args_virt);
+	}
+
+	if (res) {
+		res->result[0] = smc_res.a1;
+		res->result[1] = smc_res.a2;
+		res->result[2] = smc_res.a3;
+	}
+
+	return (long)smc_res.a0 ? qcom_scm_remap_error(smc_res.a0) : 0;
+}

drivers/firmware/qcom_scm.c

···
 // SPDX-License-Identifier: GPL-2.0-only
-/*
- * Qualcomm SCM driver
- *
- * Copyright (c) 2010,2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010,2015,2019 The Linux Foundation. All rights reserved.
  * Copyright (C) 2015 Linaro Ltd.
  */
 #include <linux/platform_device.h>
···
 #include <linux/of_platform.h>
 #include <linux/clk.h>
 #include <linux/reset-controller.h>
+#include <linux/arm-smccc.h>
 
 #include "qcom_scm.h"
 
···
 struct qcom_scm_mem_map_info {
 	__le64 mem_addr;
 	__le64 mem_size;
+};
+
+#define QCOM_SCM_FLAG_COLDBOOT_CPU0	0x00
+#define QCOM_SCM_FLAG_COLDBOOT_CPU1	0x01
+#define QCOM_SCM_FLAG_COLDBOOT_CPU2	0x08
+#define QCOM_SCM_FLAG_COLDBOOT_CPU3	0x20
+
+#define QCOM_SCM_FLAG_WARMBOOT_CPU0	0x04
+#define QCOM_SCM_FLAG_WARMBOOT_CPU1	0x02
+#define QCOM_SCM_FLAG_WARMBOOT_CPU2	0x10
+#define QCOM_SCM_FLAG_WARMBOOT_CPU3	0x40
+
+struct qcom_scm_wb_entry {
+	int flag;
+	void *entry;
+};
+
+static struct qcom_scm_wb_entry qcom_scm_wb[] = {
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU0 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU1 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU2 },
+	{ .flag = QCOM_SCM_FLAG_WARMBOOT_CPU3 },
+};
+
+static const char *qcom_scm_convention_names[] = {
+	[SMC_CONVENTION_UNKNOWN] = "unknown",
+	[SMC_CONVENTION_ARM_32] = "smc arm 32",
+	[SMC_CONVENTION_ARM_64] = "smc arm 64",
+	[SMC_CONVENTION_LEGACY] = "smc legacy",
 };
 
 static struct qcom_scm *__scm;
···
 	clk_disable_unprepare(__scm->bus_clk);
 }
 
-/**
- * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
- * @entry: Entry point function for the cpus
- * @cpus: The cpumask of cpus that will use the entry point
- *
- * Set the cold boot address of the cpus. Any cpu outside the supported
- * range would be removed from the cpu present mask.
- */
-int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
+static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
+					u32 cmd_id);
+
+enum qcom_scm_convention qcom_scm_convention;
+static bool has_queried __read_mostly;
+static DEFINE_SPINLOCK(query_lock);
+
+static void __query_convention(void)
 {
-	return __qcom_scm_set_cold_boot_addr(entry, cpus);
+	unsigned long flags;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_INFO,
+		.cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
+		.args[0] = SCM_SMC_FNID(QCOM_SCM_SVC_INFO,
+					   QCOM_SCM_INFO_IS_CALL_AVAIL) |
+			   (ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT),
+		.arginfo = QCOM_SCM_ARGS(1),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	spin_lock_irqsave(&query_lock, flags);
+	if (has_queried)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_ARM_64;
+	// Device isn't required as there is only one argument - no device
+	// needed to dma_map_single to secure world
+	ret = scm_smc_call(NULL, &desc, &res, true);
+	if (!ret && res.result[0] == 1)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_ARM_32;
+	ret = scm_smc_call(NULL, &desc, &res, true);
+	if (!ret && res.result[0] == 1)
+		goto out;
+
+	qcom_scm_convention = SMC_CONVENTION_LEGACY;
+out:
+	has_queried = true;
+	spin_unlock_irqrestore(&query_lock, flags);
+	pr_info("qcom_scm: convention: %s\n",
+		qcom_scm_convention_names[qcom_scm_convention]);
 }
-EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
+
+static inline enum qcom_scm_convention __get_convention(void)
+{
+	if (unlikely(!has_queried))
+		__query_convention();
+	return qcom_scm_convention;
+}
+
+/**
+ * qcom_scm_call() - Invoke a syscall in the secure world
+ * @dev:	device
+ * @svc_id:	service identifier
+ * @cmd_id:	command identifier
+ * @desc:	Descriptor structure containing arguments and return values
+ *
+ * Sends a command to the SCM and waits for the command to finish processing.
+ * This should *only* be called in pre-emptible context.
+ */
+static int qcom_scm_call(struct device *dev, const struct qcom_scm_desc *desc,
+			 struct qcom_scm_res *res)
+{
+	might_sleep();
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		return scm_smc_call(dev, desc, res, false);
+	case SMC_CONVENTION_LEGACY:
+		return scm_legacy_call(dev, desc, res);
+	default:
+		pr_err("Unknown current SCM calling convention.\n");
+		return -EINVAL;
+	}
+}
+
+/**
+ * qcom_scm_call_atomic() - atomic variation of qcom_scm_call()
+ * @dev:	device
+ * @svc_id:	service identifier
+ * @cmd_id:	command identifier
+ * @desc:	Descriptor structure containing arguments and return values
+ * @res:	Structure containing results from SMC/HVC call
+ *
+ * Sends a command to the SCM and waits for the command to finish processing.
+ * This can be called in atomic context.
+ */
+static int qcom_scm_call_atomic(struct device *dev,
+				const struct qcom_scm_desc *desc,
+				struct qcom_scm_res *res)
+{
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		return scm_smc_call(dev, desc, res, true);
+	case SMC_CONVENTION_LEGACY:
+		return scm_legacy_call_atomic(dev, desc, res);
+	default:
+		pr_err("Unknown current SCM calling convention.\n");
+		return -EINVAL;
+	}
+}
+
+static int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
+					u32 cmd_id)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_INFO,
+		.cmd = QCOM_SCM_INFO_IS_CALL_AVAIL,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	desc.arginfo = QCOM_SCM_ARGS(1);
+	switch (__get_convention()) {
+	case SMC_CONVENTION_ARM_32:
+	case SMC_CONVENTION_ARM_64:
+		desc.args[0] = SCM_SMC_FNID(svc_id, cmd_id) |
+				(ARM_SMCCC_OWNER_SIP << ARM_SMCCC_OWNER_SHIFT);
+		break;
+	case SMC_CONVENTION_LEGACY:
+		desc.args[0] = SCM_LEGACY_FNID(svc_id, cmd_id);
+		break;
+	default:
+		pr_err("Unknown SMC convention being used\n");
+		return -EINVAL;
+	}
+
+	ret = qcom_scm_call(dev, &desc, &res);
+
+	return ret ? : res.result[0];
+}
 
 /**
  * qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
···
  */
 int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
 {
-	return __qcom_scm_set_warm_boot_addr(__scm->dev, entry, cpus);
+	int ret;
+	int flags = 0;
+	int cpu;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_ADDR,
+		.arginfo = QCOM_SCM_ARGS(2),
+	};
+
+	/*
+	 * Reassign only if we are switching from hotplug entry point
+	 * to cpuidle entry point or vice versa.
+	 */
+	for_each_cpu(cpu, cpus) {
+		if (entry == qcom_scm_wb[cpu].entry)
+			continue;
+		flags |= qcom_scm_wb[cpu].flag;
+	}
+
+	/* No change in entry function */
+	if (!flags)
+		return 0;
+
+	desc.args[0] = flags;
+	desc.args[1] = virt_to_phys(entry);
+
+	ret = qcom_scm_call(__scm->dev, &desc, NULL);
+	if (!ret) {
+		for_each_cpu(cpu, cpus)
+			qcom_scm_wb[cpu].entry = entry;
+	}
+
+	return ret;
 }
 EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
+
+/**
+ * qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
+ * @entry: Entry point function for the cpus
+ * @cpus: The cpumask of cpus that will use the entry point
+ *
+ * Set the cold boot address of the cpus. Any cpu outside the supported
+ * range would be removed from the cpu present mask.
+ */
+int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
+{
+	int flags = 0;
+	int cpu;
+	int scm_cb_flags[] = {
+		QCOM_SCM_FLAG_COLDBOOT_CPU0,
+		QCOM_SCM_FLAG_COLDBOOT_CPU1,
+		QCOM_SCM_FLAG_COLDBOOT_CPU2,
+		QCOM_SCM_FLAG_COLDBOOT_CPU3,
+	};
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_ADDR,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+	if (!cpus || (cpus && cpumask_empty(cpus)))
+		return -EINVAL;
+
+	for_each_cpu(cpu, cpus) {
+		if (cpu < ARRAY_SIZE(scm_cb_flags))
+			flags |= scm_cb_flags[cpu];
+		else
+			set_cpu_present(cpu, false);
+	}
+
+	desc.args[0] = flags;
+	desc.args[1] = virt_to_phys(entry);
+
+	return qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
 
 /**
  * qcom_scm_cpu_power_down() - Power down the cpu
···
  */
 void qcom_scm_cpu_power_down(u32 flags)
 {
-	__qcom_scm_cpu_power_down(flags);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_TERMINATE_PC,
+		.args[0] = flags & QCOM_SCM_FLUSH_FLAG_MASK,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+	qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
 }
 EXPORT_SYMBOL(qcom_scm_cpu_power_down);
 
-/**
- * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
- *
- * Return true if HDCP is supported, false if not.
- */
-bool qcom_scm_hdcp_available(void)
+int qcom_scm_set_remote_state(u32 state, u32 id)
 {
-	int ret = qcom_scm_clk_enable();
-
-	if (ret)
-		return ret;
-
-	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
-						QCOM_SCM_CMD_HDCP);
-
-	qcom_scm_clk_disable();
-
-	return ret > 0 ? true : false;
-}
-EXPORT_SYMBOL(qcom_scm_hdcp_available);
-
-/**
- * qcom_scm_hdcp_req() - Send HDCP request.
- * @req: HDCP request array
- * @req_cnt: HDCP request array count
- * @resp: response buffer passed to SCM
- *
- * Write HDCP register(s) through SCM.
- */
-int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
-{
-	int ret = qcom_scm_clk_enable();
-
-	if (ret)
-		return ret;
-
-	ret = __qcom_scm_hdcp_req(__scm->dev, req, req_cnt, resp);
-	qcom_scm_clk_disable();
-	return ret;
-}
-EXPORT_SYMBOL(qcom_scm_hdcp_req);
-
-/**
- * qcom_scm_pas_supported() - Check if the peripheral authentication service is
- *			      available for the given peripherial
- * @peripheral:	peripheral id
- *
- * Returns true if PAS is supported for this peripheral, otherwise false.
- */
-bool qcom_scm_pas_supported(u32 peripheral)
-{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_REMOTE_STATE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = state,
+		.args[1] = id,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 	int ret;
 
-	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
-					   QCOM_SCM_PAS_IS_SUPPORTED_CMD);
-	if (ret <= 0)
-		return false;
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 
-	return __qcom_scm_pas_supported(__scm->dev, peripheral);
+	return ret ? : res.result[0];
 }
-EXPORT_SYMBOL(qcom_scm_pas_supported);
+EXPORT_SYMBOL(qcom_scm_set_remote_state);
 
-/**
- * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
- */
-bool qcom_scm_ocmem_lock_available(void)
+static int __qcom_scm_set_dload_mode(struct device *dev, bool enable)
 {
-	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_OCMEM_SVC,
-					    QCOM_SCM_OCMEM_LOCK_CMD);
-}
-EXPORT_SYMBOL(qcom_scm_ocmem_lock_available);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_BOOT,
+		.cmd = QCOM_SCM_BOOT_SET_DLOAD_MODE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = QCOM_SCM_BOOT_SET_DLOAD_MODE,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
 
-/**
- * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
- * region to the specified initiator
- *
- * @id:     tz initiator id
- * @offset: OCMEM offset
- * @size:   OCMEM size
- * @mode:   access mode (WIDE/NARROW)
- */
-int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
-			u32 mode)
-{
-	return __qcom_scm_ocmem_lock(__scm->dev, id, offset, size, mode);
-}
-EXPORT_SYMBOL(qcom_scm_ocmem_lock);
+	desc.args[1] = enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0;
 
-/**
- * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
- * region from the specified initiator
- *
- * @id:     tz initiator id
- * @offset: OCMEM offset
- * @size:   OCMEM size
- */
-int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
-{
-	return __qcom_scm_ocmem_unlock(__scm->dev, id, offset, size);
+	return qcom_scm_call(__scm->dev, &desc, NULL);
 }
-EXPORT_SYMBOL(qcom_scm_ocmem_unlock);
+
+static void qcom_scm_set_download_mode(bool enable)
+{
+	bool avail;
+	int ret = 0;
+
+	avail = __qcom_scm_is_call_available(__scm->dev,
+					     QCOM_SCM_SVC_BOOT,
+					     QCOM_SCM_BOOT_SET_DLOAD_MODE);
+	if (avail) {
+		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
+	} else if (__scm->dload_mode_addr) {
+		ret = qcom_scm_io_writel(__scm->dload_mode_addr,
+				enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0);
+	} else {
+		dev_err(__scm->dev,
+			"No available mechanism for setting download mode\n");
+	}
+
+	if (ret)
+		dev_err(__scm->dev, "failed to set download mode: %d\n", ret);
+}
 
 /**
  * qcom_scm_pas_init_image() - Initialize peripheral authentication service
···
 	dma_addr_t mdata_phys;
 	void *mdata_buf;
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_INIT_IMAGE,
+		.arginfo = QCOM_SCM_ARGS(2, QCOM_SCM_VAL, QCOM_SCM_RW),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	/*
 	 * During the scm call memory protection will be enabled for the meta
···
 	if (ret)
 		goto free_metadata;
 
-	ret = __qcom_scm_pas_init_image(__scm->dev, peripheral, mdata_phys);
+	desc.args[1] = mdata_phys;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 
 	qcom_scm_clk_disable();
 
 free_metadata:
 	dma_free_coherent(__scm->dev, size, mdata_buf, mdata_phys);
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_init_image);
 
···
 int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr, phys_addr_t size)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_MEM_SETUP,
+		.arginfo = QCOM_SCM_ARGS(3),
+		.args[0] = peripheral,
+		.args[1] = addr,
+		.args[2] = size,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_mem_setup(__scm->dev, peripheral, addr, size);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_mem_setup);
 
···
 int qcom_scm_pas_auth_and_reset(u32 peripheral)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_AUTH_AND_RESET,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_auth_and_reset(__scm->dev, peripheral);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_auth_and_reset);
 
···
 int qcom_scm_pas_shutdown(u32 peripheral)
 {
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_SHUTDOWN,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
 	ret = qcom_scm_clk_enable();
 	if (ret)
 		return ret;
 
-	ret = __qcom_scm_pas_shutdown(__scm->dev, peripheral);
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
 	qcom_scm_clk_disable();
 
-	return ret;
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_pas_shutdown);
+
+/**
+ * qcom_scm_pas_supported() - Check if the peripheral authentication service is
+ *			      available for the given peripherial
+ * @peripheral:	peripheral id
+ *
+ * Returns true if PAS is supported for this peripheral, otherwise false.
+ */
+bool qcom_scm_pas_supported(u32 peripheral)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_IS_SUPPORTED,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = peripheral,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_PIL,
+					   QCOM_SCM_PIL_PAS_IS_SUPPORTED);
+	if (ret <= 0)
+		return false;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? false : !!res.result[0];
+}
+EXPORT_SYMBOL(qcom_scm_pas_supported);
+
+static int __qcom_scm_pas_mss_reset(struct device *dev, bool reset)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_PIL,
+		.cmd = QCOM_SCM_PIL_PAS_MSS_RESET,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = reset,
+		.args[1] = 0,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? : res.result[0];
+}
 
 static int qcom_scm_pas_reset_assert(struct reset_controller_dev *rcdev,
 				     unsigned long idx)
···
 	.deassert = qcom_scm_pas_reset_deassert,
 };
 
+int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_IO,
+		.cmd = QCOM_SCM_IO_READ,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = addr,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	if (ret >= 0)
+		*val = res.result[0];
+
+	return ret < 0 ? ret : 0;
+}
+EXPORT_SYMBOL(qcom_scm_io_readl);
+
+int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_IO,
+		.cmd = QCOM_SCM_IO_WRITE,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = addr,
+		.args[1] = val,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_io_writel);
+
 /**
  * qcom_scm_restore_sec_cfg_available() - Check if secure environment
  * supports restore security config interface.
···
 bool qcom_scm_restore_sec_cfg_available(void)
 {
 	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_MP,
-					    QCOM_SCM_RESTORE_SEC_CFG);
+					    QCOM_SCM_MP_RESTORE_SEC_CFG);
 }
 EXPORT_SYMBOL(qcom_scm_restore_sec_cfg_available);
 
 int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
 {
-	return __qcom_scm_restore_sec_cfg(__scm->dev, device_id, spare);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_RESTORE_SEC_CFG,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = device_id,
+		.args[1] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	return ret ? : res.result[0];
 }
 EXPORT_SYMBOL(qcom_scm_restore_sec_cfg);
 
 int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
 {
-	return __qcom_scm_iommu_secure_ptbl_size(__scm->dev, spare, size);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE,
+		.arginfo = QCOM_SCM_ARGS(1),
+		.args[0] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+	int ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+
+	if (size)
+		*size = res.result[0];
+
+	return ret ? : res.result[1];
 }
 EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_size);
 
 int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
 {
-	return __qcom_scm_iommu_secure_ptbl_init(__scm->dev, addr, size, spare);
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT,
+		.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
+					 QCOM_SCM_VAL),
+		.args[0] = addr,
+		.args[1] = size,
+		.args[2] = spare,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	int ret;
+
+	desc.args[0] = addr;
+	desc.args[1] = size;
+	desc.args[2] = spare;
+	desc.arginfo = QCOM_SCM_ARGS(3, QCOM_SCM_RW, QCOM_SCM_VAL,
+				     QCOM_SCM_VAL);
+
+	ret = qcom_scm_call(__scm->dev, &desc, NULL);
+
+	/* the pg table has been initialized already, ignore the error */
+	if (ret == -EPERM)
+		ret = 0;
+
+	return ret;
 }
 EXPORT_SYMBOL(qcom_scm_iommu_secure_ptbl_init);
 
-int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
+static int __qcom_scm_assign_mem(struct device *dev, phys_addr_t mem_region,
+				 size_t mem_sz, phys_addr_t src, size_t src_sz,
+				 phys_addr_t dest, size_t dest_sz)
 {
-	return __qcom_scm_qsmmu500_wait_safe_toggle(__scm->dev, en);
-}
-EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle);
-
-int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
-{
-	return __qcom_scm_io_readl(__scm->dev, addr, val);
-}
-EXPORT_SYMBOL(qcom_scm_io_readl);
-
-int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
-{
-	return __qcom_scm_io_writel(__scm->dev, addr, val);
-}
-EXPORT_SYMBOL(qcom_scm_io_writel);
-
-static void qcom_scm_set_download_mode(bool enable)
-{
-	bool avail;
-	int ret = 0;
-
-	avail = __qcom_scm_is_call_available(__scm->dev,
-					     QCOM_SCM_SVC_BOOT,
-					     QCOM_SCM_SET_DLOAD_MODE);
-	if (avail) {
-		ret = __qcom_scm_set_dload_mode(__scm->dev, enable);
-	} else if (__scm->dload_mode_addr) {
-		ret = __qcom_scm_io_writel(__scm->dev, __scm->dload_mode_addr,
-					   enable ? QCOM_SCM_SET_DLOAD_MODE : 0);
-	} else {
-		dev_err(__scm->dev,
-			"No available mechanism for setting download mode\n");
-	}
-
-	if (ret)
-		dev_err(__scm->dev, "failed to set download mode: %d\n", ret);
-}
-
-static int qcom_scm_find_dload_address(struct device *dev, u64 *addr)
-{
-	struct device_node *tcsr;
-	struct device_node *np = dev->of_node;
-	struct resource res;
-	u32 offset;
 	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_MP,
+		.cmd = QCOM_SCM_MP_ASSIGN,
+		.arginfo = QCOM_SCM_ARGS(7, QCOM_SCM_RO, QCOM_SCM_VAL,
+					 QCOM_SCM_RO, QCOM_SCM_VAL, QCOM_SCM_RO,
+					 QCOM_SCM_VAL, QCOM_SCM_VAL),
+		.args[0] = mem_region,
+		.args[1] = mem_sz,
+		.args[2] = src,
+		.args[3] = src_sz,
+		.args[4] = dest,
+		.args[5] = dest_sz,
+		.args[6] = 0,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
 
-	tcsr = of_parse_phandle(np, "qcom,dload-mode", 0);
-	if (!tcsr)
-		return 0;
+	ret = qcom_scm_call(dev, &desc, &res);
 
-	ret = of_address_to_resource(tcsr, 0, &res);
-	of_node_put(tcsr);
-	if (ret)
-		return ret;
-
-	ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset);
-	if (ret < 0)
-		return ret;
-
-	*addr = res.start + offset;
-
-	return 0;
+	return ret ? : res.result[0];
 }
-
-/**
- * qcom_scm_is_available() - Checks if SCM is available
- */
-bool qcom_scm_is_available(void)
-{
-	return !!__scm;
-}
-EXPORT_SYMBOL(qcom_scm_is_available);
-
-int qcom_scm_set_remote_state(u32 state, u32 id)
-{
-	return __qcom_scm_set_remote_state(__scm->dev, state, id);
-}
-EXPORT_SYMBOL(qcom_scm_set_remote_state);
 
 /**
  * qcom_scm_assign_mem() - Make a secure call to reassign memory ownership
···
 }
 EXPORT_SYMBOL(qcom_scm_assign_mem);
 
+/**
+ * qcom_scm_ocmem_lock_available() - is OCMEM lock/unlock interface available
+ */
+bool qcom_scm_ocmem_lock_available(void)
+{
+	return __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_OCMEM,
+					    QCOM_SCM_OCMEM_LOCK_CMD);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_lock_available);
+
+/**
+ * qcom_scm_ocmem_lock() - call OCMEM lock interface to assign an OCMEM
+ * region to the specified initiator
+ *
+ * @id:     tz initiator id
+ * @offset: OCMEM offset
+ * @size:   OCMEM size
+ * @mode:   access mode (WIDE/NARROW)
+ */
+int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset, u32 size,
+			u32 mode)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_OCMEM,
+		.cmd = QCOM_SCM_OCMEM_LOCK_CMD,
+		.args[0] = id,
+		.args[1] = offset,
+		.args[2] = size,
+		.args[3] = mode,
+		.arginfo = QCOM_SCM_ARGS(4),
+	};
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_lock);
+
+/**
+ * qcom_scm_ocmem_unlock() - call OCMEM unlock interface to release an OCMEM
+ * region from the specified initiator
+ *
+ * @id:     tz initiator id
+ * @offset: OCMEM offset
+ * @size:   OCMEM size
+ */
+int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset, u32 size)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_OCMEM,
+		.cmd = QCOM_SCM_OCMEM_UNLOCK_CMD,
+		.args[0] = id,
+		.args[1] = offset,
+		.args[2] = size,
+		.arginfo = QCOM_SCM_ARGS(3),
+	};
+
+	return qcom_scm_call(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_ocmem_unlock);
+
+/**
+ * qcom_scm_hdcp_available() - Check if secure environment supports HDCP.
+ *
+ * Return true if HDCP is supported, false if not.
+ */
+bool qcom_scm_hdcp_available(void)
+{
+	int ret = qcom_scm_clk_enable();
+
+	if (ret)
+		return ret;
+
+	ret = __qcom_scm_is_call_available(__scm->dev, QCOM_SCM_SVC_HDCP,
+						QCOM_SCM_HDCP_INVOKE);
+
+	qcom_scm_clk_disable();
+
+	return ret > 0 ? true : false;
+}
+EXPORT_SYMBOL(qcom_scm_hdcp_available);
+
+/**
+ * qcom_scm_hdcp_req() - Send HDCP request.
+ * @req: HDCP request array
+ * @req_cnt: HDCP request array count
+ * @resp: response buffer passed to SCM
+ *
+ * Write HDCP register(s) through SCM.
+ */
+int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp)
+{
+	int ret;
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_HDCP,
+		.cmd = QCOM_SCM_HDCP_INVOKE,
+		.arginfo = QCOM_SCM_ARGS(10),
+		.args = {
+			req[0].addr,
+			req[0].val,
+			req[1].addr,
+			req[1].val,
+			req[2].addr,
+			req[2].val,
+			req[3].addr,
+			req[3].val,
+			req[4].addr,
+			req[4].val
+		},
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+	struct qcom_scm_res res;
+
+	if (req_cnt > QCOM_SCM_HDCP_MAX_REQ_CNT)
+		return -ERANGE;
+
+	ret = qcom_scm_clk_enable();
+	if (ret)
+		return ret;
+
+	ret = qcom_scm_call(__scm->dev, &desc, &res);
+	*resp = res.result[0];
+
+	qcom_scm_clk_disable();
+
+	return ret;
+}
+EXPORT_SYMBOL(qcom_scm_hdcp_req);
+
+int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
+{
+	struct qcom_scm_desc desc = {
+		.svc = QCOM_SCM_SVC_SMMU_PROGRAM,
+		.cmd = QCOM_SCM_SMMU_CONFIG_ERRATA1,
+		.arginfo = QCOM_SCM_ARGS(2),
+		.args[0] = QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL,
+		.args[1] = en,
+		.owner = ARM_SMCCC_OWNER_SIP,
+	};
+
+
+	return qcom_scm_call_atomic(__scm->dev, &desc, NULL);
+}
+EXPORT_SYMBOL(qcom_scm_qsmmu500_wait_safe_toggle);
+
+static int qcom_scm_find_dload_address(struct device *dev, u64 *addr)
+{
+	struct device_node *tcsr;
+	struct device_node *np = dev->of_node;
+	struct resource res;
+	u32 offset;
+	int ret;
+
+	tcsr = of_parse_phandle(np, "qcom,dload-mode", 0);
+	if (!tcsr)
+		return 0;
+
+	ret = of_address_to_resource(tcsr, 0, &res);
+	of_node_put(tcsr);
+	if (ret)
+		return ret;
+
+	ret = of_property_read_u32_index(np, "qcom,dload-mode", 1, &offset);
+	if (ret < 0)
+		return ret;
+
+	*addr = res.start + offset;
+
+	return 0;
+}
+
+/**
+ * qcom_scm_is_available() - Checks if SCM is available
+ */
+bool qcom_scm_is_available(void)
+{
+	return !!__scm;
+}
+EXPORT_SYMBOL(qcom_scm_is_available);
+
 static int qcom_scm_probe(struct platform_device *pdev)
 {
 	struct qcom_scm *scm;
···
 	__scm = scm;
 	__scm->dev = &pdev->dev;
 
-	__qcom_scm_init();
+	__query_convention();
 
 	/*
 	 * If requested enable "download mode", from this point on warmboot

drivers/firmware/qcom_scm.h

···
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2010-2015, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010-2015,2019 The Linux Foundation. All rights reserved.
  */
 #ifndef __QCOM_SCM_INT_H
 #define __QCOM_SCM_INT_H
 
-#define QCOM_SCM_SVC_BOOT		0x1
-#define QCOM_SCM_BOOT_ADDR		0x1
-#define QCOM_SCM_SET_DLOAD_MODE		0x10
-#define QCOM_SCM_BOOT_ADDR_MC		0x11
-#define QCOM_SCM_SET_REMOTE_STATE	0xa
-extern int __qcom_scm_set_remote_state(struct device *dev, u32 state, u32 id);
-extern int __qcom_scm_set_dload_mode(struct device *dev, bool enable);
+enum qcom_scm_convention {
+	SMC_CONVENTION_UNKNOWN,
+	SMC_CONVENTION_LEGACY,
+	SMC_CONVENTION_ARM_32,
+	SMC_CONVENTION_ARM_64,
+};
 
-#define QCOM_SCM_FLAG_HLOS		0x01
-#define QCOM_SCM_FLAG_COLDBOOT_MC	0x02
-#define QCOM_SCM_FLAG_WARMBOOT_MC	0x04
-extern int __qcom_scm_set_warm_boot_addr(struct device *dev, void *entry,
-		const cpumask_t *cpus);
-extern int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
+extern enum qcom_scm_convention qcom_scm_convention;
 
-#define QCOM_SCM_CMD_TERMINATE_PC	0x2
+#define MAX_QCOM_SCM_ARGS 10
+#define MAX_QCOM_SCM_RETS 3
+
+enum qcom_scm_arg_types {
+	QCOM_SCM_VAL,
+	QCOM_SCM_RO,
+	QCOM_SCM_RW,
+	QCOM_SCM_BUFVAL,
+};
+
+#define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\
+			   (((a) & 0x3) << 4) | \
+			   (((b) & 0x3) << 6) | \
+			   (((c) & 0x3) << 8) | \
+			   (((d) & 0x3) << 10) | \
+			   (((e) & 0x3) << 12) | \
+			   (((f) & 0x3) << 14) | \
+			   (((g) & 0x3) << 16) | \
+			   (((h) & 0x3) << 18) | \
+			   (((i) & 0x3) << 20) | \
+			   (((j) & 0x3) << 22) | \
+			   ((num) & 0xf))
+
+#define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
+
+
+/**
+ * struct qcom_scm_desc
+ * @arginfo:	Metadata describing the arguments in args[]
+ * @args:	The array of arguments for the secure syscall
+ */
+struct qcom_scm_desc {
+	u32 svc;
+	u32 cmd;
+	u32 arginfo;
+	u64 args[MAX_QCOM_SCM_ARGS];
+	u32 owner;
+};
+
+/**
+ * struct qcom_scm_res
+ * @result:	The values returned by the secure syscall
+ */
+struct qcom_scm_res {
+	u64 result[MAX_QCOM_SCM_RETS];
+};
+
+#define SCM_SMC_FNID(s, c)	((((s) & 0xFF) << 8) | ((c) & 0xFF))
+extern int scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
+			struct qcom_scm_res *res, bool atomic);
+
+#define SCM_LEGACY_FNID(s, c)	(((s) << 10) | ((c) & 0x3ff))
+extern int scm_legacy_call_atomic(struct device *dev,
+				  const struct qcom_scm_desc *desc,
+				  struct qcom_scm_res *res);
+extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
+			   struct qcom_scm_res *res);
+
+#define QCOM_SCM_SVC_BOOT		0x01
+#define QCOM_SCM_BOOT_SET_ADDR		0x01
+#define QCOM_SCM_BOOT_TERMINATE_PC	0x02
+#define QCOM_SCM_BOOT_SET_DLOAD_MODE	0x10
+#define QCOM_SCM_BOOT_SET_REMOTE_STATE	0x0a
 #define QCOM_SCM_FLUSH_FLAG_MASK	0x3
-#define QCOM_SCM_CMD_CORE_HOTPLUGGED	0x10
-extern void __qcom_scm_cpu_power_down(u32 flags);
 
-#define QCOM_SCM_SVC_IO			0x5
-#define QCOM_SCM_IO_READ		0x1
-#define QCOM_SCM_IO_WRITE		0x2
-extern int __qcom_scm_io_readl(struct device *dev, phys_addr_t addr, unsigned int *val);
-extern int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val);
+#define QCOM_SCM_SVC_PIL		0x02
+#define QCOM_SCM_PIL_PAS_INIT_IMAGE	0x01
+#define QCOM_SCM_PIL_PAS_MEM_SETUP	0x02
+#define QCOM_SCM_PIL_PAS_AUTH_AND_RESET	0x05
+#define QCOM_SCM_PIL_PAS_SHUTDOWN	0x06
+#define QCOM_SCM_PIL_PAS_IS_SUPPORTED	0x07
+#define QCOM_SCM_PIL_PAS_MSS_RESET	0x0a
 
-#define QCOM_SCM_SVC_INFO		0x6
-#define QCOM_IS_CALL_AVAIL_CMD		0x1
-extern int __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
-		u32 cmd_id);
+#define QCOM_SCM_SVC_IO			0x05
+#define QCOM_SCM_IO_READ		0x01
+#define QCOM_SCM_IO_WRITE		0x02
+
+#define QCOM_SCM_SVC_INFO		0x06
+#define QCOM_SCM_INFO_IS_CALL_AVAIL	0x01
+
+#define QCOM_SCM_SVC_MP				0x0c
+#define QCOM_SCM_MP_RESTORE_SEC_CFG		0x02
+#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE	0x03
+#define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT	0x04
+#define QCOM_SCM_MP_ASSIGN			0x16
+
+#define QCOM_SCM_SVC_OCMEM		0x0f
+#define QCOM_SCM_OCMEM_LOCK_CMD		0x01
+#define QCOM_SCM_OCMEM_UNLOCK_CMD	0x02
 
 #define QCOM_SCM_SVC_HDCP		0x11
-#define QCOM_SCM_CMD_HDCP		0x01
-extern int __qcom_scm_hdcp_req(struct device *dev,
-		struct qcom_scm_hdcp_req *req, u32 req_cnt, u32 *resp);
+#define QCOM_SCM_HDCP_INVOKE		0x01
+
+#define QCOM_SCM_SVC_SMMU_PROGRAM		0x15
+#define QCOM_SCM_SMMU_CONFIG_ERRATA1		0x03
+#define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL	0x02
 
 extern void __qcom_scm_init(void);
-
-#define QCOM_SCM_OCMEM_SVC			0xf
-#define QCOM_SCM_OCMEM_LOCK_CMD		0x1
-#define QCOM_SCM_OCMEM_UNLOCK_CMD		0x2
-
-extern int __qcom_scm_ocmem_lock(struct device *dev, u32 id, u32 offset,
-				 u32 size, u32 mode);
-extern int __qcom_scm_ocmem_unlock(struct device *dev, u32 id, u32 offset,
-				   u32 size);
-
-#define QCOM_SCM_SVC_PIL		0x2
-#define QCOM_SCM_PAS_INIT_IMAGE_CMD	0x1
-#define QCOM_SCM_PAS_MEM_SETUP_CMD	0x2
-#define QCOM_SCM_PAS_AUTH_AND_RESET_CMD	0x5
-#define QCOM_SCM_PAS_SHUTDOWN_CMD	0x6
-#define QCOM_SCM_PAS_IS_SUPPORTED_CMD	0x7
-#define QCOM_SCM_PAS_MSS_RESET		0xa
-extern bool __qcom_scm_pas_supported(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_init_image(struct device *dev, u32 peripheral,
-		dma_addr_t metadata_phys);
-extern int  __qcom_scm_pas_mem_setup(struct device *dev, u32 peripheral,
-		phys_addr_t addr, phys_addr_t size);
-extern int  __qcom_scm_pas_auth_and_reset(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_shutdown(struct device *dev, u32 peripheral);
-extern int  __qcom_scm_pas_mss_reset(struct device *dev, bool reset);
 
 /* common error codes */
 #define QCOM_SCM_V2_EBUSY	-12
···
 	}
 	return -EINVAL;
 }
-
-#define QCOM_SCM_SVC_MP			0xc
-#define QCOM_SCM_RESTORE_SEC_CFG	2
-extern int __qcom_scm_restore_sec_cfg(struct device *dev, u32 device_id,
-				      u32 spare);
-#define QCOM_SCM_IOMMU_SECURE_PTBL_SIZE	3
-#define QCOM_SCM_IOMMU_SECURE_PTBL_INIT	4
-#define QCOM_SCM_SVC_SMMU_PROGRAM	0x15
-#define QCOM_SCM_CONFIG_ERRATA1		0x3
-#define QCOM_SCM_CONFIG_ERRATA1_CLIENT_ALL	0x2
-extern int __qcom_scm_iommu_secure_ptbl_size(struct device *dev, u32 spare,
-					     size_t *size);
-extern int __qcom_scm_iommu_secure_ptbl_init(struct device *dev, u64 addr,
-					     u32 size, u32 spare);
-extern int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev,
-						bool enable);
-#define QCOM_MEM_PROT_ASSIGN_ID	0x16
-extern int  __qcom_scm_assign_mem(struct device *dev,
-				  phys_addr_t mem_region, size_t mem_sz,
-				  phys_addr_t src, size_t src_sz,
-				  phys_addr_t dest, size_t dest_sz);
 
 #endif

drivers/firmware/turris-mox-rwtm.c

···
 		rwtm->serial_number = reply->status[1];
 		rwtm->serial_number <<= 32;
 		rwtm->serial_number |= reply->status[0];
-			rwtm->board_version = reply->status[2];
+		rwtm->board_version = reply->status[2];
 		rwtm->ram_size = reply->status[3];
 		reply_to_mac_addr(rwtm->mac_address1, reply->status[4],
 				  reply->status[5]);

drivers/firmware/xilinx/zynqmp.c

···
 
 static const struct zynqmp_eemi_ops *eemi_ops_tbl;
 
+static bool feature_check_enabled;
+static u32 zynqmp_pm_features[PM_API_MAX];
+
 static const struct mfd_cell firmware_devs[] = {
 	{
 		.name = "zynqmp_power_controller",
···
 	case XST_PM_SUCCESS:
 	case XST_PM_DOUBLE_REQ:
 		return 0;
+	case XST_PM_NO_FEATURE:
+		return -ENOTSUPP;
 	case XST_PM_NO_ACCESS:
 		return -EACCES;
 	case XST_PM_ABORT_SUSPEND:
···
 }
 
 /**
+ * zynqmp_pm_feature() - Check weather given feature is supported or not
+ * @api_id:		API ID to check
+ *
+ * Return: Returns status, either success or error+reason
+ */
+static int zynqmp_pm_feature(u32 api_id)
+{
+	int ret;
+	u32 ret_payload[PAYLOAD_ARG_CNT];
+	u64 smc_arg[2];
+
+	if (!feature_check_enabled)
+		return 0;
+
+	/* Return value if feature is already checked */
+	if (zynqmp_pm_features[api_id] != PM_FEATURE_UNCHECKED)
+		return zynqmp_pm_features[api_id];
+
+	smc_arg[0] = PM_SIP_SVC | PM_FEATURE_CHECK;
+	smc_arg[1] = api_id;
+
+	ret = do_fw_call(smc_arg[0], smc_arg[1], 0, ret_payload);
+	if (ret) {
+		zynqmp_pm_features[api_id] = PM_FEATURE_INVALID;
+		return PM_FEATURE_INVALID;
+	}
+
+	zynqmp_pm_features[api_id] = ret_payload[1];
+
+	return zynqmp_pm_features[api_id];
+}
+
+/**
  * zynqmp_pm_invoke_fn() - Invoke the system-level platform management layer
  *			   caller function depending on the configuration
  * @pm_api_id:		Requested PM-API call
···
 	 * Make sure to stay in x0 register
 	 */
 	u64 smc_arg[4];
+
+	if (zynqmp_pm_feature(pm_api_id) == PM_FEATURE_INVALID)
+		return -ENOTSUPP;
 
 	smc_arg[0] = PM_SIP_SVC | pm_api_id;
 	smc_arg[1] = ((u64)arg1 << 32) | arg0;
···
 		np = of_find_compatible_node(NULL, NULL, "xlnx,versal");
 		if (!np)
 			return 0;
+
+		feature_check_enabled = true;
 	}
 	of_node_put(np);
 

drivers/hwmon/scmi-hwmon.c

···
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_SENSOR },
+	{ SCMI_PROTOCOL_SENSOR, "hwmon" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);

drivers/mailbox/armada-37xx-rwtm-mailbox.c

···
 static int armada_37xx_mbox_probe(struct platform_device *pdev)
 {
 	struct a37xx_mbox *mbox;
-	struct resource *regs;
 	struct mbox_chan *chans;
 	int ret;
 
···
 	if (!chans)
 		return -ENOMEM;
 
-	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	mbox->base = devm_ioremap_resource(&pdev->dev, regs);
+	mbox->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mbox->base)) {
 		dev_err(&pdev->dev, "ioremap failed\n");
 		return PTR_ERR(mbox->base);

drivers/memory/mvebu-devbus.c

···
 	struct devbus_read_params r;
 	struct devbus_write_params w;
 	struct devbus *devbus;
-	struct resource *res;
 	struct clk *clk;
 	unsigned long rate;
 	int err;
···
 		return -ENOMEM;
 
 	devbus->dev = dev;
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	devbus->base = devm_ioremap_resource(&pdev->dev, res);
+	devbus->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(devbus->base))
 		return PTR_ERR(devbus->base);
 

drivers/memory/samsung/Kconfig

···
 if SAMSUNG_MC
 
 config EXYNOS5422_DMC
-	tristate "EXYNOS5422 Dynamic Memory Controller driver"
+	tristate "Exynos5422 Dynamic Memory Controller driver"
 	depends on ARCH_EXYNOS || (COMPILE_TEST && HAS_IOMEM)
 	select DDR
 	depends on DEVFREQ_GOV_SIMPLE_ONDEMAND

drivers/memory/samsung/exynos-srom.c

···
 // Copyright (c) 2015 Samsung Electronics Co., Ltd.
 //	      http://www.samsung.com/
 //
-// EXYNOS - SROM Controller support
+// Exynos - SROM Controller support
 // Author: Pankaj Dubey <[e-mail]>
 
 #include <linux/io.h>

drivers/memory/samsung/exynos5422-dmc.c

···
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct exynos5_dmc *dmc;
-	struct resource *res;
 	int irq[2];
 
 	dmc = devm_kzalloc(dev, sizeof(*dmc), GFP_KERNEL);
···
 	dmc->dev = dev;
 	platform_set_drvdata(pdev, dmc);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	dmc->base_drexi0 = devm_ioremap_resource(dev, res);
+	dmc->base_drexi0 = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(dmc->base_drexi0))
 		return PTR_ERR(dmc->base_drexi0);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
-	dmc->base_drexi1 = devm_ioremap_resource(dev, res);
+	dmc->base_drexi1 = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(dmc->base_drexi1))
 		return PTR_ERR(dmc->base_drexi1);
 

drivers/memory/tegra/Makefile

···
 obj-$(CONFIG_TEGRA20_EMC)  += tegra20-emc.o
 obj-$(CONFIG_TEGRA30_EMC)  += tegra30-emc.o
 obj-$(CONFIG_TEGRA124_EMC) += tegra124-emc.o
-obj-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186.o
+obj-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186.o tegra186-emc.o
+obj-$(CONFIG_ARCH_TEGRA_194_SOC) += tegra186.o tegra186-emc.o

drivers/memory/tegra/tegra124-emc.c

···
 
 	void __iomem *regs;
 
+	struct clk *clk;
+
 	enum emc_dram_type dram_type;
 	unsigned int dram_num;
 
 	struct emc_timing last_timing;
 	struct emc_timing *timings;
 	unsigned int num_timings;
+
+	struct {
+		struct dentry *root;
+		unsigned long min_rate;
+		unsigned long max_rate;
+	} debugfs;
 };
 
 /* Timing change sequence functions */
···
 	return NULL;
 }
 
-/* Debugfs entry */
+/*
+ * debugfs interface
+ *
+ * The memory controller driver exposes some files in debugfs that can be used
+ * to control the EMC frequency. The top-level directory can be found here:
+ *
+ *   /sys/kernel/debug/emc
+ *
+ * It contains the following files:
+ *
+ *   - available_rates: This file contains a list of valid, space-separated
+ *     EMC frequencies.
+ *
+ *   - min_rate: Writing a value to this file sets the given frequency as the
+ *       floor of the permitted range. If this is higher than the currently
+ *       configured EMC frequency, this will cause the frequency to be
+ *       increased so that it stays within the valid range.
+ *
+ *   - max_rate: Similarily to the min_rate file, writing a value to this file
+ *       sets the given frequency as the ceiling of the permitted range. If
+ *       the value is lower than the currently configured EMC frequency, this
+ *       will cause the frequency to be decreased so that it stays within the
+ *       valid range.
+ */
 
-static int emc_debug_rate_get(void *data, u64 *rate)
+static bool tegra_emc_validate_rate(struct tegra_emc *emc, unsigned long rate)
 {
-	struct clk *c = data;
+	unsigned int i;
 
-	*rate = clk_get_rate(c);
+	for (i = 0; i < emc->num_timings; i++)
+		if (rate == emc->timings[i].rate)
+			return true;
 
-	return 0;
+	return false;
 }
 
-static int emc_debug_rate_set(void *data, u64 rate)
-{
-	struct clk *c = data;
-
-	return clk_set_rate(c, rate);
-}
-
-DEFINE_SIMPLE_ATTRIBUTE(emc_debug_rate_fops, emc_debug_rate_get,
-			emc_debug_rate_set, "%lld\n");
-
-static int emc_debug_supported_rates_show(struct seq_file *s, void *data)
+static int tegra_emc_debug_available_rates_show(struct seq_file *s,
+						void *data)
 {
 	struct tegra_emc *emc = s->private;
 	const char *prefix = "";
 	unsigned int i;
 
 	for (i = 0; i < emc->num_timings; i++) {
-		struct emc_timing *timing = &emc->timings[i];
-
-		seq_printf(s, "%s%lu", prefix, timing->rate);
-
+		seq_printf(s, "%s%lu", prefix, emc->timings[i].rate);
 		prefix = " ";
 	}
 
···
 	return 0;
 }
 
-static int emc_debug_supported_rates_open(struct inode *inode,
-					  struct file *file)
+static int tegra_emc_debug_available_rates_open(struct inode *inode,
+						struct file *file)
 {
-	return single_open(file, emc_debug_supported_rates_show,
+	return single_open(file, tegra_emc_debug_available_rates_show,
 			   inode->i_private);
 }
 
-static const struct file_operations emc_debug_supported_rates_fops = {
-	.open = emc_debug_supported_rates_open,
+static const struct file_operations tegra_emc_debug_available_rates_fops = {
+	.open = tegra_emc_debug_available_rates_open,
 	.read = seq_read,
 	.llseek = seq_lseek,
 	.release = single_release,
 };
 
+static int tegra_emc_debug_min_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.min_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_min_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_min_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.min_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_min_rate_fops,
+			tegra_emc_debug_min_rate_get,
+			tegra_emc_debug_min_rate_set, "%llu\n");
+
+static int tegra_emc_debug_max_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.max_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_max_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_max_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.max_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_max_rate_fops,
+			tegra_emc_debug_max_rate_get,
+			tegra_emc_debug_max_rate_set, "%llu\n");
+
 static void emc_debugfs_init(struct device *dev, struct tegra_emc *emc)
 {
-	struct dentry *root, *file;
-	struct clk *clk;
+	unsigned int i;
+	int err;
 
-	root = debugfs_create_dir("emc", NULL);
-	if (!root) {
+	emc->clk = devm_clk_get(dev, "emc");
+	if (IS_ERR(emc->clk)) {
+		if (PTR_ERR(emc->clk) != -ENODEV) {
+			dev_err(dev, "failed to get EMC clock: %ld\n",
+				PTR_ERR(emc->clk));
+			return;
+		}
+	}
+
+	emc->debugfs.min_rate = ULONG_MAX;
+	emc->debugfs.max_rate = 0;
+
+	for (i = 0; i < emc->num_timings; i++) {
+		if (emc->timings[i].rate < emc->debugfs.min_rate)
+			emc->debugfs.min_rate = emc->timings[i].rate;
+
+		if (emc->timings[i].rate > emc->debugfs.max_rate)
+			emc->debugfs.max_rate = emc->timings[i].rate;
+	}
+
+	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
+				 emc->debugfs.max_rate);
+	if (err < 0) {
+		dev_err(dev, "failed to set rate range [%lu-%lu] for %pC\n",
+			emc->debugfs.min_rate, emc->debugfs.max_rate,
+			emc->clk);
+		return;
+	}
+
+	emc->debugfs.root = debugfs_create_dir("emc", NULL);
+	if (!emc->debugfs.root) {
 		dev_err(dev, "failed to create debugfs directory\n");
 		return;
 	}
 
-	clk = clk_get_sys("tegra-clk-debug", "emc");
-	if (IS_ERR(clk)) {
-		dev_err(dev, "failed to get debug clock: %ld\n", PTR_ERR(clk));
-		return;
-	}
-
-	file = debugfs_create_file("rate", S_IRUGO | S_IWUSR, root, clk,
-				   &emc_debug_rate_fops);
-	if (!file)
-		dev_err(dev, "failed to create debugfs entry\n");
-
-	file = debugfs_create_file("supported_rates", S_IRUGO, root, emc,
-				   &emc_debug_supported_rates_fops);
-	if (!file)
-		dev_err(dev, "failed to create debugfs entry\n");
+	debugfs_create_file("available_rates", S_IRUGO, emc->debugfs.root, emc,
+			    &tegra_emc_debug_available_rates_fops);
+	debugfs_create_file("min_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_min_rate_fops);
+	debugfs_create_file("max_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_max_rate_fops);
 }
 
 static int tegra_emc_probe(struct platform_device *pdev)

drivers/memory/tegra/tegra186-emc.c

···
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 NVIDIA CORPORATION.  All rights reserved.
+ */
+
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+
+#include <soc/tegra/bpmp.h>
+
+struct tegra186_emc_dvfs {
+	unsigned long latency;
+	unsigned long rate;
+};
+
+struct tegra186_emc {
+	struct tegra_bpmp *bpmp;
+	struct device *dev;
+	struct clk *clk;
+
+	struct tegra186_emc_dvfs *dvfs;
+	unsigned int num_dvfs;
+
+	struct {
+		struct dentry *root;
+		unsigned long min_rate;
+		unsigned long max_rate;
+	} debugfs;
+};
+
+/*
+ * debugfs interface
+ *
+ * The memory controller driver exposes some files in debugfs that can be used
+ * to control the EMC frequency. The top-level directory can be found here:
+ *
+ *   /sys/kernel/debug/emc
+ *
+ * It contains the following files:
+ *
+ *   - available_rates: This file contains a list of valid, space-separated
+ *     EMC frequencies.
+ *
+ *   - min_rate: Writing a value to this file sets the given frequency as the
+ *       floor of the permitted range. If this is higher than the currently
+ *       configured EMC frequency, this will cause the frequency to be
+ *       increased so that it stays within the valid range.
+ *
+ *   - max_rate: Similarily to the min_rate file, writing a value to this file
+ *       sets the given frequency as the ceiling of the permitted range. If
+ *       the value is lower than the currently configured EMC frequency, this
+ *       will cause the frequency to be decreased so that it stays within the
+ *       valid range.
+ */
+
+static bool tegra186_emc_validate_rate(struct tegra186_emc *emc,
+				       unsigned long rate)
+{
+	unsigned int i;
+
+	for (i = 0; i < emc->num_dvfs; i++)
+		if (rate == emc->dvfs[i].rate)
+			return true;
+
+	return false;
+}
+
+static int tegra186_emc_debug_available_rates_show(struct seq_file *s,
+						   void *data)
+{
+	struct tegra186_emc *emc = s->private;
+	const char *prefix = "";
+	unsigned int i;
+
+	for (i = 0; i < emc->num_dvfs; i++) {
+		seq_printf(s, "%s%lu", prefix, emc->dvfs[i].rate);
+		prefix = " ";
+	}
+
+	seq_puts(s, "\n");
+
+	return 0;
+}
+
+static int tegra186_emc_debug_available_rates_open(struct inode *inode,
+						   struct file *file)
+{
+	return single_open(file, tegra186_emc_debug_available_rates_show,
+			   inode->i_private);
+}
+
+static const struct file_operations tegra186_emc_debug_available_rates_fops = {
+	.open = tegra186_emc_debug_available_rates_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int tegra186_emc_debug_min_rate_get(void *data, u64 *rate)
+{
+	struct tegra186_emc *emc = data;
+
+	*rate = emc->debugfs.min_rate;
+
+	return 0;
+}
+
+static int tegra186_emc_debug_min_rate_set(void *data, u64 rate)
+{
+	struct tegra186_emc *emc = data;
+	int err;
+
+	if (!tegra186_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_min_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.min_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra186_emc_debug_min_rate_fops,
+			tegra186_emc_debug_min_rate_get,
+			tegra186_emc_debug_min_rate_set, "%llu\n");
+
+static int tegra186_emc_debug_max_rate_get(void *data, u64 *rate)
+{
+	struct tegra186_emc *emc = data;
+
+	*rate = emc->debugfs.max_rate;
+
+	return 0;
+}
+
+static int tegra186_emc_debug_max_rate_set(void *data, u64 rate)
+{
+	struct tegra186_emc *emc = data;
+	int err;
+
+	if (!tegra186_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_max_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.max_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra186_emc_debug_max_rate_fops,
+			tegra186_emc_debug_max_rate_get,
+			tegra186_emc_debug_max_rate_set, "%llu\n");
+
+static int tegra186_emc_probe(struct platform_device *pdev)
+{
+	struct mrq_emc_dvfs_latency_response response;
+	struct tegra_bpmp_message msg;
+	struct tegra186_emc *emc;
+	unsigned int i;
+	int err;
+
+	emc = devm_kzalloc(&pdev->dev, sizeof(*emc), GFP_KERNEL);
+	if (!emc)
+		return -ENOMEM;
+
+	emc->bpmp = tegra_bpmp_get(&pdev->dev);
+	if (IS_ERR(emc->bpmp)) {
+		err = PTR_ERR(emc->bpmp);
+
+		if (err != -EPROBE_DEFER)
+			dev_err(&pdev->dev, "failed to get BPMP: %d\n", err);
+
+		return err;
+	}
+
+	emc->clk = devm_clk_get(&pdev->dev, "emc");
+	if (IS_ERR(emc->clk)) {
+		err = PTR_ERR(emc->clk);
+		dev_err(&pdev->dev, "failed to get EMC clock: %d\n", err);
+		return err;
+	}
+
+	platform_set_drvdata(pdev, emc);
+	emc->dev = &pdev->dev;
+
+	memset(&msg, 0, sizeof(msg));
+	msg.mrq = MRQ_EMC_DVFS_LATENCY;
+	msg.tx.data = NULL;
+	msg.tx.size = 0;
+	msg.rx.data = &response;
+	msg.rx.size = sizeof(response);
+
+	err = tegra_bpmp_transfer(emc->bpmp, &msg);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to EMC DVFS pairs: %d\n", err);
+		return err;
+	}
+
+	emc->debugfs.min_rate = ULONG_MAX;
+	emc->debugfs.max_rate = 0;
+
+	emc->num_dvfs = response.num_pairs;
+
+	emc->dvfs = devm_kmalloc_array(&pdev->dev, emc->num_dvfs,
+				       sizeof(*emc->dvfs), GFP_KERNEL);
+	if (!emc->dvfs)
+		return -ENOMEM;
+
+	dev_dbg(&pdev->dev, "%u DVFS pairs:\n", emc->num_dvfs);
+
+	for (i = 0; i < emc->num_dvfs; i++) {
+		emc->dvfs[i].rate = response.pairs[i].freq * 1000;
+		emc->dvfs[i].latency = response.pairs[i].latency;
+
+		if (emc->dvfs[i].rate < emc->debugfs.min_rate)
+			emc->debugfs.min_rate = emc->dvfs[i].rate;
+
+		if (emc->dvfs[i].rate > emc->debugfs.max_rate)
+			emc->debugfs.max_rate = emc->dvfs[i].rate;
+
+		dev_dbg(&pdev->dev, "  %2u: %lu Hz -> %lu us\n", i,
+			emc->dvfs[i].rate, emc->dvfs[i].latency);
+	}
+
+	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
+				 emc->debugfs.max_rate);
+	if (err < 0) {
+		dev_err(&pdev->dev,
+			"failed to set rate range [%lu-%lu] for %pC\n",
+			emc->debugfs.min_rate, emc->debugfs.max_rate,
+			emc->clk);
+		return err;
+	}
+
+	emc->debugfs.root = debugfs_create_dir("emc", NULL);
+	if (!emc->debugfs.root) {
+		dev_err(&pdev->dev, "failed to create debugfs directory\n");
+		return 0;
+	}
+
+	debugfs_create_file("available_rates", S_IRUGO, emc->debugfs.root,
+			    emc, &tegra186_emc_debug_available_rates_fops);
+	debugfs_create_file("min_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra186_emc_debug_min_rate_fops);
+	debugfs_create_file("max_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra186_emc_debug_max_rate_fops);
+
+	return 0;
+}
+
+static int tegra186_emc_remove(struct platform_device *pdev)
+{
+	struct tegra186_emc *emc = platform_get_drvdata(pdev);
+
+	debugfs_remove_recursive(emc->debugfs.root);
+	tegra_bpmp_put(emc->bpmp);
+
+	return 0;
+}
+
+static const struct of_device_id tegra186_emc_of_match[] = {
+#if defined(CONFIG_ARCH_TEGRA186_SOC)
+	{ .compatible = "nvidia,tegra186-emc" },
+#endif
+#if defined(CONFIG_ARCH_TEGRA194_SOC)
+	{ .compatible = "nvidia,tegra194-emc" },
+#endif
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, tegra186_emc_of_match);
+
+static struct platform_driver tegra186_emc_driver = {
+	.driver = {
+		.name = "tegra186-emc",
+		.of_match_table = tegra186_emc_of_match,
+		.suppress_bind_attrs = true,
+	},
+	.probe = tegra186_emc_probe,
+	.remove = tegra186_emc_remove,
+};
+module_platform_driver(tegra186_emc_driver);
+
+MODULE_AUTHOR("Thierry Reding <[e-mail]>");
+MODULE_DESCRIPTION("NVIDIA Tegra186 External Memory Controller driver");
+MODULE_LICENSE("GPL v2");

drivers/memory/tegra/tegra186.c

···
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
 #include <linux/platform_device.h>
 
+#if defined(CONFIG_ARCH_TEGRA_186_SOC)
 #include <dt-bindings/memory/tegra186-mc.h>
+#endif
 
-struct tegra_mc {
-	struct device *dev;
-	void __iomem *regs;
-};
+#if defined(CONFIG_ARCH_TEGRA_194_SOC)
+#include <dt-bindings/memory/tegra194-mc.h>
+#endif
 
-struct tegra_mc_client {
+struct tegra186_mc_client {
 	const char *name;
 	unsigned int sid;
 	struct {
···
 	} regs;
 };
 
-static const struct tegra_mc_client tegra186_mc_clients[] = {
+struct tegra186_mc_soc {
+	const struct tegra186_mc_client *clients;
+	unsigned int num_clients;
+};
+
+struct tegra186_mc {
+	struct device *dev;
+	void __iomem *regs;
+
+	const struct tegra186_mc_soc *soc;
+};
+
+static void tegra186_mc_program_sid(struct tegra186_mc *mc)
+{
+	unsigned int i;
+
+	for (i = 0; i < mc->soc->num_clients; i++) {
+		const struct tegra186_mc_client *client = &mc->soc->clients[i];
+		u32 override, security;
+
+		override = readl(mc->regs + client->regs.override);
+		security = readl(mc->regs + client->regs.security);
+
+		dev_dbg(mc->dev, "client %s: override: %x security: %x\n",
+			client->name, override, security);
+
+		dev_dbg(mc->dev, "setting SID %u for %s\n", client->sid,
+			client->name);
+		writel(client->sid, mc->regs + client->regs.override);
+
+		override = readl(mc->regs + client->regs.override);
+		security = readl(mc->regs + client->regs.security);
+
+		dev_dbg(mc->dev, "client %s: override: %x security: %x\n",
+			client->name, override, security);
+	}
+}
+
+#if defined(CONFIG_ARCH_TEGRA_186_SOC)
+static const struct tegra186_mc_client tegra186_mc_clients[] = {
 	{
 		.name = "ptcr",
 		.sid = TEGRA186_SID_PASSTHROUGH,
···
 	},
 };
 
+static const struct tegra186_mc_soc tegra186_mc_soc = {
+	.num_clients = ARRAY_SIZE(tegra186_mc_clients),
+	.clients = tegra186_mc_clients,
+};
+#endif
+
+#if defined(CONFIG_ARCH_TEGRA_194_SOC)
+static const struct tegra186_mc_client tegra194_mc_clients[] = {
+	{
+		.name = "ptcr",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x000,
+			.security = 0x004,
+		},
+	}, {
+		.name = "miu7r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x008,
+			.security = 0x00c,
+		},
+	}, {
+		.name = "miu7w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x010,
+			.security = 0x014,
+		},
+	}, {
+		.name = "hdar",
+		.sid = TEGRA194_SID_HDA,
+		.regs = {
+			.override = 0x0a8,
+			.security = 0x0ac,
+		},
+	}, {
+		.name = "host1xdmar",
+		.sid = TEGRA194_SID_HOST1X,
+		.regs = {
+			.override = 0x0b0,
+			.security = 0x0b4,
+		},
+	}, {
+		.name = "nvencsrd",
+		.sid = TEGRA194_SID_NVENC,
+		.regs = {
+			.override = 0x0e0,
+			.security = 0x0e4,
+		},
+	}, {
+		.name = "satar",
+		.sid = TEGRA194_SID_SATA,
+		.regs = {
+			.override = 0x0f8,
+			.security = 0x0fc,
+		},
+	}, {
+		.name = "mpcorer",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x138,
+			.security = 0x13c,
+		},
+	}, {
+		.name = "nvencswr",
+		.sid = TEGRA194_SID_NVENC,
+		.regs = {
+			.override = 0x158,
+			.security = 0x15c,
+		},
+	}, {
+		.name = "hdaw",
+		.sid = TEGRA194_SID_HDA,
+		.regs = {
+			.override = 0x1a8,
+			.security = 0x1ac,
+		},
+	}, {
+		.name = "mpcorew",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x1c8,
+			.security = 0x1cc,
+		},
+	}, {
+		.name = "sataw",
+		.sid = TEGRA194_SID_SATA,
+		.regs = {
+			.override = 0x1e8,
+			.security = 0x1ec,
+		},
+	}, {
+		.name = "ispra",
+		.sid = TEGRA194_SID_ISP,
+		.regs = {
+			.override = 0x220,
+			.security = 0x224,
+		},
+	}, {
+		.name = "ispfalr",
+		.sid = TEGRA194_SID_ISP_FALCON,
+		.regs = {
+			.override = 0x228,
+			.security = 0x22c,
+		},
+	}, {
+		.name = "ispwa",
+		.sid = TEGRA194_SID_ISP,
+		.regs = {
+			.override = 0x230,
+			.security = 0x234,
+		},
+	}, {
+		.name = "ispwb",
+		.sid = TEGRA194_SID_ISP,
+		.regs = {
+			.override = 0x238,
+			.security = 0x23c,
+		},
+	}, {
+		.name = "xusb_hostr",
+		.sid = TEGRA194_SID_XUSB_HOST,
+		.regs = {
+			.override = 0x250,
+			.security = 0x254,
+		},
+	}, {
+		.name = "xusb_hostw",
+		.sid = TEGRA194_SID_XUSB_HOST,
+		.regs = {
+			.override = 0x258,
+			.security = 0x25c,
+		},
+	}, {
+		.name = "xusb_devr",
+		.sid = TEGRA194_SID_XUSB_DEV,
+		.regs = {
+			.override = 0x260,
+			.security = 0x264,
+		},
+	}, {
+		.name = "xusb_devw",
+		.sid = TEGRA194_SID_XUSB_DEV,
+		.regs = {
+			.override = 0x268,
+			.security = 0x26c,
+		},
+	}, {
+		.name = "sdmmcra",
+		.sid = TEGRA194_SID_SDMMC1,
+		.regs = {
+			.override = 0x300,
+			.security = 0x304,
+		},
+	}, {
+		.name = "sdmmcr",
+		.sid = TEGRA194_SID_SDMMC3,
+		.regs = {
+			.override = 0x310,
+			.security = 0x314,
+		},
+	}, {
+		.name = "sdmmcrab",
+		.sid = TEGRA194_SID_SDMMC4,
+		.regs = {
+			.override = 0x318,
+			.security = 0x31c,
+		},
+	}, {
+		.name = "sdmmcwa",
+		.sid = TEGRA194_SID_SDMMC1,
+		.regs = {
+			.override = 0x320,
+			.security = 0x324,
+		},
+	}, {
+		.name = "sdmmcw",
+		.sid = TEGRA194_SID_SDMMC3,
+		.regs = {
+			.override = 0x330,
+			.security = 0x334,
+		},
+	}, {
+		.name = "sdmmcwab",
+		.sid = TEGRA194_SID_SDMMC4,
+		.regs = {
+			.override = 0x338,
+			.security = 0x33c,
+		},
+	}, {
+		.name = "vicsrd",
+		.sid = TEGRA194_SID_VIC,
+		.regs = {
+			.override = 0x360,
+			.security = 0x364,
+		},
+	}, {
+		.name = "vicswr",
+		.sid = TEGRA194_SID_VIC,
+		.regs = {
+			.override = 0x368,
+			.security = 0x36c,
+		},
+	}, {
+		.name = "viw",
+		.sid = TEGRA194_SID_VI,
+		.regs = {
+			.override = 0x390,
+			.security = 0x394,
+		},
+	}, {
+		.name = "nvdecsrd",
+		.sid = TEGRA194_SID_NVDEC,
+		.regs = {
+			.override = 0x3c0,
+			.security = 0x3c4,
+		},
+	}, {
+		.name = "nvdecswr",
+		.sid = TEGRA194_SID_NVDEC,
+		.regs = {
+			.override = 0x3c8,
+			.security = 0x3cc,
+		},
+	}, {
+		.name = "aper",
+		.sid = TEGRA194_SID_APE,
+		.regs = {
+			.override = 0x3c0,
+			.security = 0x3c4,
+		},
+	}, {
+		.name = "apew",
+		.sid = TEGRA194_SID_APE,
+		.regs = {
+			.override = 0x3d0,
+			.security = 0x3d4,
+		},
+	}, {
+		.name = "nvjpgsrd",
+		.sid = TEGRA194_SID_NVJPG,
+		.regs = {
+			.override = 0x3f0,
+			.security = 0x3f4,
+		},
+	}, {
+		.name = "nvjpgswr",
+		.sid = TEGRA194_SID_NVJPG,
+		.regs = {
+			.override = 0x3f0,
+			.security = 0x3f4,
+		},
+	}, {
+		.name = "axiapr",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x410,
+			.security = 0x414,
+		},
+	}, {
+		.name = "axiapw",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x418,
+			.security = 0x41c,
+		},
+	}, {
+		.name = "etrr",
+		.sid = TEGRA194_SID_ETR,
+		.regs = {
+			.override = 0x420,
+			.security = 0x424,
+		},
+	}, {
+		.name = "etrw",
+		.sid = TEGRA194_SID_ETR,
+		.regs = {
+			.override = 0x428,
+			.security = 0x42c,
+		},
+	}, {
+		.name = "axisr",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x460,
+			.security = 0x464,
+		},
+	}, {
+		.name = "axisw",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x468,
+			.security = 0x46c,
+		},
+	}, {
+		.name = "eqosr",
+		.sid = TEGRA194_SID_EQOS,
+		.regs = {
+			.override = 0x470,
+			.security = 0x474,
+		},
+	}, {
+		.name = "eqosw",
+		.sid = TEGRA194_SID_EQOS,
+		.regs = {
+			.override = 0x478,
+			.security = 0x47c,
+		},
+	}, {
+		.name = "ufshcr",
+		.sid = TEGRA194_SID_UFSHC,
+		.regs = {
+			.override = 0x480,
+			.security = 0x484,
+		},
+	}, {
+		.name = "ufshcw",
+		.sid = TEGRA194_SID_UFSHC,
+		.regs = {
+			.override = 0x488,
+			.security = 0x48c,
+		},
+	}, {
+		.name = "nvdisplayr",
+		.sid = TEGRA194_SID_NVDISPLAY,
+		.regs = {
+			.override = 0x490,
+			.security = 0x494,
+		},
+	}, {
+		.name = "bpmpr",
+		.sid = TEGRA194_SID_BPMP,
+		.regs = {
+			.override = 0x498,
+			.security = 0x49c,
+		},
+	}, {
+		.name = "bpmpw",
+		.sid = TEGRA194_SID_BPMP,
+		.regs = {
+			.override = 0x4a0,
+			.security = 0x4a4,
+		},
+	}, {
+		.name = "bpmpdmar",
+		.sid = TEGRA194_SID_BPMP,
+		.regs = {
+			.override = 0x4a8,
+			.security = 0x4ac,
+		},
+	}, {
+		.name = "bpmpdmaw",
+		.sid = TEGRA194_SID_BPMP,
+		.regs = {
+			.override = 0x4b0,
+			.security = 0x4b4,
+		},
+	}, {
+		.name = "aonr",
+		.sid = TEGRA194_SID_AON,
+		.regs = {
+			.override = 0x4b8,
+			.security = 0x4bc,
+		},
+	}, {
+		.name = "aonw",
+		.sid = TEGRA194_SID_AON,
+		.regs = {
+			.override = 0x4c0,
+			.security = 0x4c4,
+		},
+	}, {
+		.name = "aondmar",
+		.sid = TEGRA194_SID_AON,
+		.regs = {
+			.override = 0x4c8,
+			.security = 0x4cc,
+		},
+	}, {
+		.name = "aondmaw",
+		.sid = TEGRA194_SID_AON,
+		.regs = {
+			.override = 0x4d0,
+			.security = 0x4d4,
+		},
+	}, {
+		.name = "scer",
+		.sid = TEGRA194_SID_SCE,
+		.regs = {
+			.override = 0x4d8,
+			.security = 0x4dc,
+		},
+	}, {
+		.name = "scew",
+		.sid = TEGRA194_SID_SCE,
+		.regs = {
+			.override = 0x4e0,
+			.security = 0x4e4,
+		},
+	}, {
+		.name = "scedmar",
+		.sid = TEGRA194_SID_SCE,
+		.regs = {
+			.override = 0x4e8,
+			.security = 0x4ec,
+		},
+	}, {
+		.name = "scedmaw",
+		.sid = TEGRA194_SID_SCE,
+		.regs = {
+			.override = 0x4f0,
+			.security = 0x4f4,
+		},
+	}, {
+		.name = "apedmar",
+		.sid = TEGRA194_SID_APE,
+		.regs = {
+			.override = 0x4f8,
+			.security = 0x4fc,
+		},
+	}, {
+		.name = "apedmaw",
+		.sid = TEGRA194_SID_APE,
+		.regs = {
+			.override = 0x500,
+			.security = 0x504,
+		},
+	}, {
+		.name = "nvdisplayr1",
+		.sid = TEGRA194_SID_NVDISPLAY,
+		.regs = {
+			.override = 0x508,
+			.security = 0x50c,
+		},
+	}, {
+		.name = "vicsrd1",
+		.sid = TEGRA194_SID_VIC,
+		.regs = {
+			.override = 0x510,
+			.security = 0x514,
+		},
+	}, {
+		.name = "nvdecsrd1",
+		.sid = TEGRA194_SID_NVDEC,
+		.regs = {
+			.override = 0x518,
+			.security = 0x51c,
+		},
+	}, {
+		.name = "miu0r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x530,
+			.security = 0x534,
+		},
+	}, {
+		.name = "miu0w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x538,
+			.security = 0x53c,
+		},
+	}, {
+		.name = "miu1r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x540,
+			.security = 0x544,
+		},
+	}, {
+		.name = "miu1w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x548,
+			.security = 0x54c,
+		},
+	}, {
+		.name = "miu2r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x570,
+			.security = 0x574,
+		},
+	}, {
+		.name = "miu2w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x578,
+			.security = 0x57c,
+		},
+	}, {
+		.name = "miu3r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x580,
+			.security = 0x584,
+		},
+	}, {
+		.name = "miu3w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x588,
+			.security = 0x58c,
+		},
+	}, {
+		.name = "miu4r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x590,
+			.security = 0x594,
+		},
+	}, {
+		.name = "miu4w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x598,
+			.security = 0x59c,
+		},
+	}, {
+		.name = "dpmur",
+		.sid = TEGRA194_SID_PASSTHROUGH,
+		.regs = {
+			.override = 0x598,
+			.security = 0x59c,
+		},
+	}, {
+		.name = "vifalr",
+		.sid = TEGRA194_SID_VI_FALCON,
+		.regs = {
+			.override = 0x5e0,
+			.security = 0x5e4,
+		},
+	}, {
+		.name = "vifalw",
+		.sid = TEGRA194_SID_VI_FALCON,
+		.regs = {
+			.override = 0x5e8,
+			.security = 0x5ec,
+		},
+	}, {
+		.name = "dla0rda",
+		.sid = TEGRA194_SID_NVDLA0,
+		.regs = {
+			.override = 0x5f0,
+			.security = 0x5f4,
+		},
+	}, {
+		.name = "dla0falrdb",
+		.sid = TEGRA194_SID_NVDLA0,
+		.regs = {
+			.override = 0x5f8,
+			.security = 0x5fc,
+		},
+	}, {
+		.name = "dla0wra",
+		.sid = TEGRA194_SID_NVDLA0,
+		.regs = {
+			.override = 0x600,
+			.security = 0x604,
+		},
+	}, {
+		.name = "dla0falwrb",
+		.sid = TEGRA194_SID_NVDLA0,
+		.regs = {
+			.override = 0x608,
+			.security = 0x60c,
+		},
+	}, {
+		.name = "dla1rda",
+		.sid = TEGRA194_SID_NVDLA1,
+		.regs = {
+			.override = 0x610,
+			.security = 0x614,
+		},
+	}, {
+		.name = "dla1falrdb",
+		.sid = TEGRA194_SID_NVDLA1,
+		.regs = {
+			.override = 0x618,
+			.security = 0x61c,
+		},
+	}, {
+		.name = "dla1wra",
+		.sid = TEGRA194_SID_NVDLA1,
+		.regs = {
+			.override = 0x620,
+			.security = 0x624,
+		},
+	}, {
+		.name = "dla1falwrb",
+		.sid = TEGRA194_SID_NVDLA1,
+		.regs = {
+			.override = 0x628,
+			.security = 0x62c,
+		},
+	}, {
+		.name = "pva0rda",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x630,
+			.security = 0x634,
+		},
+	}, {
+		.name = "pva0rdb",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x638,
+			.security = 0x63c,
+		},
+	}, {
+		.name = "pva0rdc",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x640,
+			.security = 0x644,
+		},
+	}, {
+		.name = "pva0wra",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x648,
+			.security = 0x64c,
+		},
+	}, {
+		.name = "pva0wrb",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x650,
+			.security = 0x654,
+		},
+	}, {
+		.name = "pva0wrc",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x658,
+			.security = 0x65c,
+		},
+	}, {
+		.name = "pva1rda",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x660,
+			.security = 0x664,
+		},
+	}, {
+		.name = "pva1rdb",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x668,
+			.security = 0x66c,
+		},
+	}, {
+		.name = "pva1rdc",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x670,
+			.security = 0x674,
+		},
+	}, {
+		.name = "pva1wra",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x678,
+			.security = 0x67c,
+		},
+	}, {
+		.name = "pva1wrb",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x680,
+			.security = 0x684,
+		},
+	}, {
+		.name = "pva1wrc",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x688,
+			.security = 0x68c,
+		},
+	}, {
+		.name = "rcer",
+		.sid = TEGRA194_SID_RCE,
+		.regs = {
+			.override = 0x690,
+			.security = 0x694,
+		},
+	}, {
+		.name = "rcew",
+		.sid = TEGRA194_SID_RCE,
+		.regs = {
+			.override = 0x698,
+			.security = 0x69c,
+		},
+	}, {
+		.name = "rcedmar",
+		.sid = TEGRA194_SID_RCE,
+		.regs = {
+			.override = 0x6a0,
+			.security = 0x6a4,
+		},
+	}, {
+		.name = "rcedmaw",
+		.sid = TEGRA194_SID_RCE,
+		.regs = {
+			.override = 0x6a8,
+			.security = 0x6ac,
+		},
+	}, {
+		.name = "nvenc1srd",
+		.sid = TEGRA194_SID_NVENC1,
+		.regs = {
+			.override = 0x6b0,
+			.security = 0x6b4,
+		},
+	}, {
+		.name = "nvenc1swr",
+		.sid = TEGRA194_SID_NVENC1,
+		.regs = {
+			.override = 0x6b8,
+			.security = 0x6bc,
+		},
+	}, {
+		.name = "pcie0r",
+		.sid = TEGRA194_SID_PCIE0,
+		.regs = {
+			.override = 0x6c0,
+			.security = 0x6c4,
+		},
+	}, {
+		.name = "pcie0w",
+		.sid = TEGRA194_SID_PCIE0,
+		.regs = {
+			.override = 0x6c8,
+			.security = 0x6cc,
+		},
+	}, {
+		.name = "pcie1r",
+		.sid = TEGRA194_SID_PCIE1,
+		.regs = {
+			.override = 0x6d0,
+			.security = 0x6d4,
+		},
+	}, {
+		.name = "pcie1w",
+		.sid = TEGRA194_SID_PCIE1,
+		.regs = {
+			.override = 0x6d8,
+			.security = 0x6dc,
+		},
+	}, {
+		.name = "pcie2ar",
+		.sid = TEGRA194_SID_PCIE2,
+		.regs = {
+			.override = 0x6e0,
+			.security = 0x6e4,
+		},
+	}, {
+		.name = "pcie2aw",
+		.sid = TEGRA194_SID_PCIE2,
+		.regs = {
+			.override = 0x6e8,
+			.security = 0x6ec,
+		},
+	}, {
+		.name = "pcie3r",
+		.sid = TEGRA194_SID_PCIE3,
+		.regs = {
+			.override = 0x6f0,
+			.security = 0x6f4,
+		},
+	}, {
+		.name = "pcie3w",
+		.sid = TEGRA194_SID_PCIE3,
+		.regs = {
+			.override = 0x6f8,
+			.security = 0x6fc,
+		},
+	}, {
+		.name = "pcie4r",
+		.sid = TEGRA194_SID_PCIE4,
+		.regs = {
+			.override = 0x700,
+			.security = 0x704,
+		},
+	}, {
+		.name = "pcie4w",
+		.sid = TEGRA194_SID_PCIE4,
+		.regs = {
+			.override = 0x708,
+			.security = 0x70c,
+		},
+	}, {
+		.name = "pcie5r",
+		.sid = TEGRA194_SID_PCIE5,
+		.regs = {
+			.override = 0x710,
+			.security = 0x714,
+		},
+	}, {
+		.name = "pcie5w",
+		.sid = TEGRA194_SID_PCIE5,
+		.regs = {
+			.override = 0x718,
+			.security = 0x71c,
+		},
+	}, {
+		.name = "ispfalw",
+		.sid = TEGRA194_SID_ISP_FALCON,
+		.regs = {
+			.override = 0x720,
+			.security = 0x724,
+		},
+	}, {
+		.name = "dla0rda1",
+		.sid = TEGRA194_SID_NVDLA0,
+		.regs = {
+			.override = 0x748,
+			.security = 0x74c,
+		},
+	}, {
+		.name = "dla1rda1",
+		.sid = TEGRA194_SID_NVDLA1,
+		.regs = {
+			.override = 0x750,
+			.security = 0x754,
+		},
+	}, {
+		.name = "pva0rda1",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x758,
+			.security = 0x75c,
+		},
+	}, {
+		.name = "pva0rdb1",
+		.sid = TEGRA194_SID_PVA0,
+		.regs = {
+			.override = 0x760,
+			.security = 0x764,
+		},
+	}, {
+		.name = "pva1rda1",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x768,
+			.security = 0x76c,
+		},
+	}, {
+		.name = "pva1rdb1",
+		.sid = TEGRA194_SID_PVA1,
+		.regs = {
+			.override = 0x770,
+			.security = 0x774,
+		},
+	}, {
+		.name = "pcie5r1",
+		.sid = TEGRA194_SID_PCIE5,
+		.regs = {
+			.override = 0x778,
+			.security = 0x77c,
+		},
+	}, {
+		.name = "nvencsrd1",
+		.sid = TEGRA194_SID_NVENC,
+		.regs = {
+			.override = 0x780,
+			.security = 0x784,
+		},
+	}, {
+		.name = "nvenc1srd1",
+		.sid = TEGRA194_SID_NVENC1,
+		.regs = {
+			.override = 0x788,
+			.security = 0x78c,
+		},
+	}, {
+		.name = "ispra1",
+		.sid = TEGRA194_SID_ISP,
+		.regs = {
+			.override = 0x790,
+			.security = 0x794,
+		},
+	}, {
+		.name = "pcie0r1",
+		.sid = TEGRA194_SID_PCIE0,
+		.regs = {
+			.override = 0x798,
+			.security = 0x79c,
+		},
+	}, {
+		.name = "nvdec1srd",
+		.sid = TEGRA194_SID_NVDEC1,
+		.regs = {
+			.override = 0x7c8,
+			.security = 0x7cc,
+		},
+	}, {
+		.name = "nvdec1srd1",
+		.sid = TEGRA194_SID_NVDEC1,
+		.regs = {
+			.override = 0x7d0,
+			.security = 0x7d4,
+		},
+	}, {
+		.name = "nvdec1swr",
+		.sid = TEGRA194_SID_NVDEC1,
+		.regs = {
+			.override = 0x7d8,
+			.security = 0x7dc,
+		},
+	}, {
+		.name = "miu5r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x7e0,
+			.security = 0x7e4,
+		},
+	}, {
+		.name = "miu5w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x7e8,
+			.security = 0x7ec,
+		},
+	}, {
+		.name = "miu6r",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x7f0,
+			.security = 0x7f4,
+		},
+	}, {
+		.name = "miu6w",
+		.sid = TEGRA194_SID_MIU,
+		.regs = {
+			.override = 0x7f8,
+			.security = 0x7fc,
+		},
+	},
+};
+
+static const struct tegra186_mc_soc tegra194_mc_soc = {
+	.num_clients = ARRAY_SIZE(tegra194_mc_clients),
+	.clients = tegra194_mc_clients,
+};
+#endif
+
 static int tegra186_mc_probe(struct platform_device *pdev)
 {
+	struct tegra186_mc *mc;
 	struct resource *res;
-	struct tegra_mc *mc;
-	unsigned int i;
-	int err = 0;
+	int err;
 
 	mc = devm_kzalloc(&pdev->dev, sizeof(*mc), GFP_KERNEL);
 	if (!mc)
 		return -ENOMEM;
+
+	mc->soc = of_device_get_match_data(&pdev->dev);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	mc->regs = devm_ioremap_resource(&pdev->dev, res);
···
 
 	mc->dev = &pdev->dev;
 
-	for (i = 0; i < ARRAY_SIZE(tegra186_mc_clients); i++) {
-		const struct tegra_mc_client *client = &tegra186_mc_clients[i];
-		u32 override, security;
-
-		override = readl(mc->regs + client->regs.override);
-		security = readl(mc->regs + client->regs.security);
-
-		dev_dbg(&pdev->dev, "client %s: override: %x security: %x\n",
-			client->name, override, security);
-
-		dev_dbg(&pdev->dev, "setting SID %u for %s\n", client->sid,
-			client->name);
-		writel(client->sid, mc->regs + client->regs.override);
-
-		override = readl(mc->regs + client->regs.override);
-		security = readl(mc->regs + client->regs.security);
-
-		dev_dbg(&pdev->dev, "client %s: override: %x security: %x\n",
-			client->name, override, security);
-	}
+	err = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+	if (err < 0)
+		return err;
 
 	platform_set_drvdata(pdev, mc);
+	tegra186_mc_program_sid(mc);
 
-	return err;
+	return 0;
+}
+
+static int tegra186_mc_remove(struct platform_device *pdev)
+{
+	struct tegra186_mc *mc = platform_get_drvdata(pdev);
+
+	of_platform_depopulate(mc->dev);
+
+	return 0;
 }
 
 static const struct of_device_id tegra186_mc_of_match[] = {
-	{ .compatible = "nvidia,tegra186-mc", },
+#if defined(CONFIG_ARCH_TEGRA_186_SOC)
+	{ .compatible = "nvidia,tegra186-mc", .data = &tegra186_mc_soc },
+#endif
+#if defined(CONFIG_ARCH_TEGRA_194_SOC)
+	{ .compatible = "nvidia,tegra194-mc", .data = &tegra194_mc_soc },
+#endif
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, tegra186_mc_of_match);
+
+static int tegra186_mc_suspend(struct device *dev)
+{
+	return 0;
+}
+
+static int tegra186_mc_resume(struct device *dev)
+{
+	struct tegra186_mc *mc = dev_get_drvdata(dev);
+
+	tegra186_mc_program_sid(mc);
+
+	return 0;
+}
+
+static const struct dev_pm_ops tegra186_mc_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(tegra186_mc_suspend, tegra186_mc_resume)
+};
 
 static struct platform_driver tegra186_mc_driver = {
 	.driver = {
 		.name = "tegra186-mc",
 		.of_match_table = tegra186_mc_of_match,
+		.pm = &tegra186_mc_pm_ops,
 		.suppress_bind_attrs = true,
 	},
-	.prevent_deferred_probe = true,
 	.probe = tegra186_mc_probe,
+	.remove = tegra186_mc_remove,
 };
 module_platform_driver(tegra186_mc_driver);
 

drivers/memory/tegra/tegra20-emc.c

···
 #include <linux/clk.h>
 #include <linux/clk/tegra.h>
 #include <linux/completion.h>
+#include <linux/debugfs.h>
 #include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
···
 
 	struct emc_timing *timings;
 	unsigned int num_timings;
+
+	struct {
+		struct dentry *root;
+		unsigned long min_rate;
+		unsigned long max_rate;
+	} debugfs;
 };
 
 static irqreturn_t tegra_emc_isr(int irq, void *data)
···
 	return timing->rate;
 }
 
+/*
+ * debugfs interface
+ *
+ * The memory controller driver exposes some files in debugfs that can be used
+ * to control the EMC frequency. The top-level directory can be found here:
+ *
+ *   /sys/kernel/debug/emc
+ *
+ * It contains the following files:
+ *
+ *   - available_rates: This file contains a list of valid, space-separated
+ *     EMC frequencies.
+ *
+ *   - min_rate: Writing a value to this file sets the given frequency as the
+ *       floor of the permitted range. If this is higher than the currently
+ *       configured EMC frequency, this will cause the frequency to be
+ *       increased so that it stays within the valid range.
+ *
+ *   - max_rate: Similarily to the min_rate file, writing a value to this file
+ *       sets the given frequency as the ceiling of the permitted range. If
+ *       the value is lower than the currently configured EMC frequency, this
+ *       will cause the frequency to be decreased so that it stays within the
+ *       valid range.
+ */
+
+static bool tegra_emc_validate_rate(struct tegra_emc *emc, unsigned long rate)
+{
+	unsigned int i;
+
+	for (i = 0; i < emc->num_timings; i++)
+		if (rate == emc->timings[i].rate)
+			return true;
+
+	return false;
+}
+
+static int tegra_emc_debug_available_rates_show(struct seq_file *s, void *data)
+{
+	struct tegra_emc *emc = s->private;
+	const char *prefix = "";
+	unsigned int i;
+
+	for (i = 0; i < emc->num_timings; i++) {
+		seq_printf(s, "%s%lu", prefix, emc->timings[i].rate);
+		prefix = " ";
+	}
+
+	seq_puts(s, "\n");
+
+	return 0;
+}
+
+static int tegra_emc_debug_available_rates_open(struct inode *inode,
+						struct file *file)
+{
+	return single_open(file, tegra_emc_debug_available_rates_show,
+			   inode->i_private);
+}
+
+static const struct file_operations tegra_emc_debug_available_rates_fops = {
+	.open = tegra_emc_debug_available_rates_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int tegra_emc_debug_min_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.min_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_min_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_min_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.min_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_min_rate_fops,
+			tegra_emc_debug_min_rate_get,
+			tegra_emc_debug_min_rate_set, "%llu\n");
+
+static int tegra_emc_debug_max_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.max_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_max_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_max_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.max_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_max_rate_fops,
+			tegra_emc_debug_max_rate_get,
+			tegra_emc_debug_max_rate_set, "%llu\n");
+
+static void tegra_emc_debugfs_init(struct tegra_emc *emc)
+{
+	struct device *dev = emc->dev;
+	unsigned int i;
+	int err;
+
+	emc->debugfs.min_rate = ULONG_MAX;
+	emc->debugfs.max_rate = 0;
+
+	for (i = 0; i < emc->num_timings; i++) {
+		if (emc->timings[i].rate < emc->debugfs.min_rate)
+			emc->debugfs.min_rate = emc->timings[i].rate;
+
+		if (emc->timings[i].rate > emc->debugfs.max_rate)
+			emc->debugfs.max_rate = emc->timings[i].rate;
+	}
+
+	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
+				 emc->debugfs.max_rate);
+	if (err < 0) {
+		dev_err(dev, "failed to set rate range [%lu-%lu] for %pC\n",
+			emc->debugfs.min_rate, emc->debugfs.max_rate,
+			emc->clk);
+	}
+
+	emc->debugfs.root = debugfs_create_dir("emc", NULL);
+	if (!emc->debugfs.root) {
+		dev_err(emc->dev, "failed to create debugfs directory\n");
+		return;
+	}
+
+	debugfs_create_file("available_rates", S_IRUGO, emc->debugfs.root,
+			    emc, &tegra_emc_debug_available_rates_fops);
+	debugfs_create_file("min_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_min_rate_fops);
+	debugfs_create_file("max_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_max_rate_fops);
+}
+
 static int tegra_emc_probe(struct platform_device *pdev)
 {
 	struct device_node *np;
···
 			err);
 		goto unset_cb;
 	}
+
+	platform_set_drvdata(pdev, emc);
+	tegra_emc_debugfs_init(emc);
 
 	return 0;
 

drivers/memory/tegra/tegra210.c

···
 			.reg = 0x37c,
 			.shift = 0,
 			.mask = 0xff,
-			.def = 0x39,
+			.def = 0x7a,
 		},
 	}, {
 		.id = 0x4b,

drivers/memory/tegra/tegra30-emc.c

···
 #include <linux/clk.h>
 #include <linux/clk/tegra.h>
 #include <linux/completion.h>
+#include <linux/debugfs.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/interrupt.h>
···
 	struct clk *clk;
 	void __iomem *regs;
 	unsigned int irq;
+	bool bad_state;
 
+	struct emc_timing *new_timing;
 	struct emc_timing *timings;
 	unsigned int num_timings;
 
···
 	bool vref_cal_toggle : 1;
 	bool zcal_long : 1;
 	bool dll_on : 1;
-	bool prepared : 1;
-	bool bad_state : 1;
+
+	struct {
+		struct dentry *root;
+		unsigned long min_rate;
+		unsigned long max_rate;
+	} debugfs;
 };
+
+static int emc_seq_update_timing(struct tegra_emc *emc)
+{
+	u32 val;
+	int err;
+
+	writel_relaxed(EMC_TIMING_UPDATE, emc->regs + EMC_TIMING_CONTROL);
+
+	err = readl_relaxed_poll_timeout_atomic(emc->regs + EMC_STATUS, val,
+				!(val & EMC_STATUS_TIMING_UPDATE_STALLED),
+				1, 200);
+	if (err) {
+		dev_err(emc->dev, "failed to update timing: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+static void emc_complete_clk_change(struct tegra_emc *emc)
+{
+	struct emc_timing *timing = emc->new_timing;
+	unsigned int dram_num;
+	bool failed = false;
+	int err;
+
+	/* re-enable auto-refresh */
+	dram_num = tegra_mc_get_emem_device_count(emc->mc);
+	writel_relaxed(EMC_REFCTRL_ENABLE_ALL(dram_num),
+		       emc->regs + EMC_REFCTRL);
+
+	/* restore auto-calibration */
+	if (emc->vref_cal_toggle)
+		writel_relaxed(timing->emc_auto_cal_interval,
+			       emc->regs + EMC_AUTO_CAL_INTERVAL);
+
+	/* restore dynamic self-refresh */
+	if (timing->emc_cfg_dyn_self_ref) {
+		emc->emc_cfg |= EMC_CFG_DYN_SREF_ENABLE;
+		writel_relaxed(emc->emc_cfg, emc->regs + EMC_CFG);
+	}
+
+	/* set number of clocks to wait after each ZQ command */
+	if (emc->zcal_long)
+		writel_relaxed(timing->emc_zcal_cnt_long,
+			       emc->regs + EMC_ZCAL_WAIT_CNT);
+
+	/* wait for writes to settle */
+	udelay(2);
+
+	/* update restored timing */
+	err = emc_seq_update_timing(emc);
+	if (err)
+		failed = true;
+
+	/* restore early ACK */
+	mc_writel(emc->mc, emc->mc_override, MC_EMEM_ARB_OVERRIDE);
+
+	WRITE_ONCE(emc->bad_state, failed);
+}
 
 static irqreturn_t tegra_emc_isr(int irq, void *data)
 {
···
 	if (!status)
 		return IRQ_NONE;
 
-	/* notify about EMC-CAR handshake completion */
-	if (status & EMC_CLKCHANGE_COMPLETE_INT)
-		complete(&emc->clk_handshake_complete);
-
 	/* notify about HW problem */
 	if (status & EMC_REFRESH_OVERFLOW_INT)
 		dev_err_ratelimited(emc->dev,
···
 
 	/* clear interrupts */
 	writel_relaxed(status, emc->regs + EMC_INTSTATUS);
+
+	/* notify about EMC-CAR handshake completion */
+	if (status & EMC_CLKCHANGE_COMPLETE_INT) {
+		if (completion_done(&emc->clk_handshake_complete)) {
+			dev_err_ratelimited(emc->dev,
+					    "bogus handshake interrupt\n");
+			return IRQ_NONE;
+		}
+
+		emc_complete_clk_change(emc);
+		complete(&emc->clk_handshake_complete);
+	}
 
 	return IRQ_HANDLED;
 }
···
 	}
 
 	return preset;
-}
-
-static int emc_seq_update_timing(struct tegra_emc *emc)
-{
-	u32 val;
-	int err;
-
-	writel_relaxed(EMC_TIMING_UPDATE, emc->regs + EMC_TIMING_CONTROL);
-
-	err = readl_relaxed_poll_timeout_atomic(emc->regs + EMC_STATUS, val,
-				!(val & EMC_STATUS_TIMING_UPDATE_STALLED),
-				1, 200);
-	if (err) {
-		dev_err(emc->dev, "failed to update timing: %d\n", err);
-		return err;
-	}
-
-	return 0;
 }
 
 static int emc_prepare_mc_clk_cfg(struct tegra_emc *emc, unsigned long rate)
···
 				!(val & EMC_AUTO_CAL_STATUS_ACTIVE), 1, 300);
 			if (err) {
 				dev_err(emc->dev,
-					"failed to disable auto-cal: %d\n",
-					err);
+					"auto-cal finish timeout: %d\n", err);
 				return err;
 			}
 
···
 
 		writel_relaxed(val, emc->regs + EMC_MRS_WAIT_CNT);
 	}
-
-	/* disable interrupt since read access is prohibited after stalling */
-	disable_irq(emc->irq);
 
 	/* this read also completes the writes */
 	val = readl_relaxed(emc->regs + EMC_SEL_DPD_CTRL);
···
 				       emc->regs + EMC_ZQ_CAL);
 	}
 
-	/* re-enable auto-refresh */
-	writel_relaxed(EMC_REFCTRL_ENABLE_ALL(dram_num),
-		       emc->regs + EMC_REFCTRL);
-
 	/* flow control marker 3 */
 	writel_relaxed(0x1, emc->regs + EMC_UNSTALL_RW_AFTER_CLKCHANGE);
 
+	/*
+	 * Read and discard an arbitrary MC register (Note: EMC registers
+	 * can't be used) to ensure the register writes are completed.
+	 */
+	mc_readl(emc->mc, MC_EMEM_ARB_OVERRIDE);
+
 	reinit_completion(&emc->clk_handshake_complete);
 
-	/* interrupt can be re-enabled now */
-	enable_irq(emc->irq);
-
-	emc->bad_state = false;
-	emc->prepared = true;
+	emc->new_timing = timing;
 
 	return 0;
 }
···
 static int emc_complete_timing_change(struct tegra_emc *emc,
 				      unsigned long rate)
 {
-	struct emc_timing *timing = emc_find_timing(emc, rate);
 	unsigned long timeout;
-	int ret;
 
 	timeout = wait_for_completion_timeout(&emc->clk_handshake_complete,
 					      msecs_to_jiffies(100));
 	if (timeout == 0) {
 		dev_err(emc->dev, "emc-car handshake failed\n");
-		emc->bad_state = true;
 		return -EIO;
 	}
 
-	/* restore auto-calibration */
-	if (emc->vref_cal_toggle)
-		writel_relaxed(timing->emc_auto_cal_interval,
-			       emc->regs + EMC_AUTO_CAL_INTERVAL);
+	if (READ_ONCE(emc->bad_state))
+		return -EIO;
 
-	/* restore dynamic self-refresh */
-	if (timing->emc_cfg_dyn_self_ref) {
-		emc->emc_cfg |= EMC_CFG_DYN_SREF_ENABLE;
-		writel_relaxed(emc->emc_cfg, emc->regs + EMC_CFG);
-	}
-
-	/* set number of clocks to wait after each ZQ command */
-	if (emc->zcal_long)
-		writel_relaxed(timing->emc_zcal_cnt_long,
-			       emc->regs + EMC_ZCAL_WAIT_CNT);
-
-	udelay(2);
-	/* update restored timing */
-	ret = emc_seq_update_timing(emc);
-	if (ret)
-		emc->bad_state = true;
-
-	/* restore early ACK */
-	mc_writel(emc->mc, emc->mc_override, MC_EMEM_ARB_OVERRIDE);
-
-	emc->prepared = false;
-
-	return ret;
+	return 0;
 }
 
 static int emc_unprepare_timing_change(struct tegra_emc *emc,
 				       unsigned long rate)
 {
-	if (emc->prepared && !emc->bad_state) {
+	if (!emc->bad_state) {
 		/* shouldn't ever happen in practice */
 		dev_err(emc->dev, "timing configuration can't be reverted\n");
 		emc->bad_state = true;
···
 
 	switch (msg) {
 	case PRE_RATE_CHANGE:
+		/*
+		 * Disable interrupt since read accesses are prohibited after
+		 * stalling.
+		 */
+		disable_irq(emc->irq);
 		err = emc_prepare_timing_change(emc, cnd->new_rate);
+		enable_irq(emc->irq);
 		break;
 
 	case ABORT_RATE_CHANGE:
···
 	return timing->rate;
 }
 
+/*
+ * debugfs interface
+ *
+ * The memory controller driver exposes some files in debugfs that can be used
+ * to control the EMC frequency. The top-level directory can be found here:
+ *
+ *   /sys/kernel/debug/emc
+ *
+ * It contains the following files:
+ *
+ *   - available_rates: This file contains a list of valid, space-separated
+ *     EMC frequencies.
+ *
+ *   - min_rate: Writing a value to this file sets the given frequency as the
+ *       floor of the permitted range. If this is higher than the currently
+ *       configured EMC frequency, this will cause the frequency to be
+ *       increased so that it stays within the valid range.
+ *
+ *   - max_rate: Similarily to the min_rate file, writing a value to this file
+ *       sets the given frequency as the ceiling of the permitted range. If
+ *       the value is lower than the currently configured EMC frequency, this
+ *       will cause the frequency to be decreased so that it stays within the
+ *       valid range.
+ */
+
+static bool tegra_emc_validate_rate(struct tegra_emc *emc, unsigned long rate)
+{
+	unsigned int i;
+
+	for (i = 0; i < emc->num_timings; i++)
+		if (rate == emc->timings[i].rate)
+			return true;
+
+	return false;
+}
+
+static int tegra_emc_debug_available_rates_show(struct seq_file *s, void *data)
+{
+	struct tegra_emc *emc = s->private;
+	const char *prefix = "";
+	unsigned int i;
+
+	for (i = 0; i < emc->num_timings; i++) {
+		seq_printf(s, "%s%lu", prefix, emc->timings[i].rate);
+		prefix = " ";
+	}
+
+	seq_puts(s, "\n");
+
+	return 0;
+}
+
+static int tegra_emc_debug_available_rates_open(struct inode *inode,
+						struct file *file)
+{
+	return single_open(file, tegra_emc_debug_available_rates_show,
+			   inode->i_private);
+}
+
+static const struct file_operations tegra_emc_debug_available_rates_fops = {
+	.open = tegra_emc_debug_available_rates_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+static int tegra_emc_debug_min_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.min_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_min_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_min_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.min_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_min_rate_fops,
+			tegra_emc_debug_min_rate_get,
+			tegra_emc_debug_min_rate_set, "%llu\n");
+
+static int tegra_emc_debug_max_rate_get(void *data, u64 *rate)
+{
+	struct tegra_emc *emc = data;
+
+	*rate = emc->debugfs.max_rate;
+
+	return 0;
+}
+
+static int tegra_emc_debug_max_rate_set(void *data, u64 rate)
+{
+	struct tegra_emc *emc = data;
+	int err;
+
+	if (!tegra_emc_validate_rate(emc, rate))
+		return -EINVAL;
+
+	err = clk_set_max_rate(emc->clk, rate);
+	if (err < 0)
+		return err;
+
+	emc->debugfs.max_rate = rate;
+
+	return 0;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(tegra_emc_debug_max_rate_fops,
+			tegra_emc_debug_max_rate_get,
+			tegra_emc_debug_max_rate_set, "%llu\n");
+
+static void tegra_emc_debugfs_init(struct tegra_emc *emc)
+{
+	struct device *dev = emc->dev;
+	unsigned int i;
+	int err;
+
+	emc->debugfs.min_rate = ULONG_MAX;
+	emc->debugfs.max_rate = 0;
+
+	for (i = 0; i < emc->num_timings; i++) {
+		if (emc->timings[i].rate < emc->debugfs.min_rate)
+			emc->debugfs.min_rate = emc->timings[i].rate;
+
+		if (emc->timings[i].rate > emc->debugfs.max_rate)
+			emc->debugfs.max_rate = emc->timings[i].rate;
+	}
+
+	err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate,
+				 emc->debugfs.max_rate);
+	if (err < 0) {
+		dev_err(dev, "failed to set rate range [%lu-%lu] for %pC\n",
+			emc->debugfs.min_rate, emc->debugfs.max_rate,
+			emc->clk);
+	}
+
+	emc->debugfs.root = debugfs_create_dir("emc", NULL);
+	if (!emc->debugfs.root) {
+		dev_err(emc->dev, "failed to create debugfs directory\n");
+		return;
+	}
+
+	debugfs_create_file("available_rates", S_IRUGO, emc->debugfs.root,
+			    emc, &tegra_emc_debug_available_rates_fops);
+	debugfs_create_file("min_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_min_rate_fops);
+	debugfs_create_file("max_rate", S_IRUGO | S_IWUSR, emc->debugfs.root,
+			    emc, &tegra_emc_debug_max_rate_fops);
+}
+
 static int tegra_emc_probe(struct platform_device *pdev)
 {
 	struct platform_device *mc;
···
 	}
 
 	platform_set_drvdata(pdev, emc);
+	tegra_emc_debugfs_init(emc);
 
 	return 0;
 
···
 static int tegra_emc_suspend(struct device *dev)
 {
 	struct tegra_emc *emc = dev_get_drvdata(dev);
+	int err;
 
-	/*
-	 * Suspending in a bad state will hang machine. The "prepared" var
-	 * shall be always false here unless it's a kernel bug that caused
-	 * suspending in a wrong order.
-	 */
-	if (WARN_ON(emc->prepared) || emc->bad_state)
+	/* take exclusive control over the clock's rate */
+	err = clk_rate_exclusive_get(emc->clk);
+	if (err) {
+		dev_err(emc->dev, "failed to acquire clk: %d\n", err);
+		return err;
+	}
+
+	/* suspending in a bad state will hang machine */
+	if (WARN(emc->bad_state, "hardware in a bad state\n"))
 		return -EINVAL;
 
 	emc->bad_state = true;
···
 
 	emc_setup_hw(emc);
 	emc->bad_state = false;
+
+	clk_rate_exclusive_put(emc->clk);
 
 	return 0;
 }

drivers/net/ethernet/freescale/Kconfig

···
 
 config UCC_GETH
 	tristate "Freescale QE Gigabit Ethernet"
-	depends on QUICC_ENGINE
+	depends on QUICC_ENGINE && PPC32
 	select FSL_PQ_MDIO
 	select PHYLIB
 	---help---

drivers/net/wan/fsl_ucc_hdlc.c

···
 	int ret, i;
 	void *bd_buffer;
 	dma_addr_t bd_dma_addr;
-	u32 riptr;
-	u32 tiptr;
+	s32 riptr;
+	s32 tiptr;
 	u32 gumr;
 
 	ut_info = priv->ut_info;
···
 	priv->ucc_pram_offset = qe_muram_alloc(sizeof(struct ucc_hdlc_param),
 				ALIGNMENT_OF_UCC_HDLC_PRAM);
 
-	if (IS_ERR_VALUE(priv->ucc_pram_offset)) {
+	if (priv->ucc_pram_offset < 0) {
 		dev_err(priv->dev, "Can not allocate MURAM for hdlc parameter.\n");
 		ret = -ENOMEM;
 		goto free_tx_bd;
···
 
 	/* Alloc riptr, tiptr */
 	riptr = qe_muram_alloc(32, 32);
-	if (IS_ERR_VALUE(riptr)) {
+	if (riptr < 0) {
 		dev_err(priv->dev, "Cannot allocate MURAM mem for Receive internal temp data pointer\n");
 		ret = -ENOMEM;
 		goto free_tx_skbuff;
 	}
 
 	tiptr = qe_muram_alloc(32, 32);
-	if (IS_ERR_VALUE(tiptr)) {
+	if (tiptr < 0) {
 		dev_err(priv->dev, "Cannot allocate MURAM mem for Transmit internal temp data pointer\n");
 		ret = -ENOMEM;
 		goto free_riptr;
+	}
+	if (riptr != (u16)riptr || tiptr != (u16)tiptr) {
+		dev_err(priv->dev, "MURAM allocation out of addressable range\n");
+		ret = -ENOMEM;
+		goto free_tiptr;
 	}
 
 	/* Set RIPTR, TIPTR */
···
 
 	if (howmany < budget) {
 		napi_complete_done(napi, howmany);
-		qe_setbits32(priv->uccf->p_uccm,
-			     (UCCE_HDLC_RX_EVENTS | UCCE_HDLC_TX_EVENTS) << 16);
+		qe_setbits_be32(priv->uccf->p_uccm,
+				(UCCE_HDLC_RX_EVENTS | UCCE_HDLC_TX_EVENTS) << 16);
 	}
 
 	return howmany;
···
 
 static void uhdlc_memclean(struct ucc_hdlc_private *priv)
 {
-	qe_muram_free(priv->ucc_pram->riptr);
-	qe_muram_free(priv->ucc_pram->tiptr);
+	qe_muram_free(ioread16be(&priv->ucc_pram->riptr));
+	qe_muram_free(ioread16be(&priv->ucc_pram->tiptr));
 
 	if (priv->rx_bd_base) {
 		dma_free_coherent(priv->dev,

drivers/net/wan/fsl_ucc_hdlc.h

···
 
 	unsigned short tx_ring_size;
 	unsigned short rx_ring_size;
-	u32 ucc_pram_offset;
+	s32 ucc_pram_offset;
 
 	unsigned short encoding;
 	unsigned short parity;

drivers/of/base.c

···
 EXPORT_SYMBOL(of_cpu_node_to_id);
 
 /**
+ * of_get_cpu_state_node - Get CPU's idle state node at the given index
+ *
+ * @cpu_node: The device node for the CPU
+ * @index: The index in the list of the idle states
+ *
+ * Two generic methods can be used to describe a CPU's idle states, either via
+ * a flattened description through the "cpu-idle-states" binding or via the
+ * hierarchical layout, using the "power-domains" and the "domain-idle-states"
+ * bindings. This function check for both and returns the idle state node for
+ * the requested index.
+ *
+ * In case an idle state node is found at @index, the refcount is incremented
+ * for it, so call of_node_put() on it when done. Returns NULL if not found.
+ */
+struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
+					  int index)
+{
+	struct of_phandle_args args;
+	int err;
+
+	err = of_parse_phandle_with_args(cpu_node, "power-domains",
+					"#power-domain-cells", 0, &args);
+	if (!err) {
+		struct device_node *state_node =
+			of_parse_phandle(args.np, "domain-idle-states", index);
+
+		of_node_put(args.np);
+		if (state_node)
+			return state_node;
+	}
+
+	return of_parse_phandle(cpu_node, "cpu-idle-states", index);
+}
+EXPORT_SYMBOL(of_get_cpu_state_node);
+
+/**
  * __of_device_is_compatible() - Check if the node matches given constraints
  * @device: pointer to node
  * @compat: required compatible string, NULL or "" for any match

drivers/reset/Kconfig

···
 	  This enables the reset controller driver for Broadcom STB SoCs using
 	  a SUN_TOP_CTRL_SW_INIT style controller.
 
+config RESET_BRCMSTB_RESCAL
+	bool "Broadcom STB RESCAL reset controller"
+	default ARCH_BRCMSTB || COMPILE_TEST
+	help
+	  This enables the RESCAL reset controller for SATA, PCIe0, or PCIe1 on
+	  BCM7216.
+
 config RESET_HSDK
 	bool "Synopsys HSDK Reset Driver"
 	depends on HAS_IOMEM
···
 	select MFD_SYSCON
 	help
 	  This enables the reset controller driver for i.MX7 SoCs.
+
+config RESET_INTEL_GW
+	bool "Intel Reset Controller Driver"
+	depends on OF
+	select REGMAP_MMIO
+	help
+	  This enables the reset controller driver for Intel Gateway SoCs.
+	  Say Y to control the reset signals provided by reset controller.
+	  Otherwise, say N.
 
 config RESET_LANTIQ
 	bool "Lantiq XWAY Reset Driver" if COMPILE_TEST
···
 	  This enables the reset driver for Audio Memory Arbiter of
 	  Amlogic's A113 based SoCs
 
+config RESET_NPCM
+	bool "NPCM BMC Reset Driver" if COMPILE_TEST
+	default ARCH_NPCM
+	help
+	  This enables the reset controller driver for Nuvoton NPCM
+	  BMC SoCs.
+
 config RESET_OXNAS
 	bool
 
···
 	  This enables the reset driver for ImgTec Pistachio SoCs.
 
 config RESET_QCOM_AOSS
-	bool "Qcom AOSS Reset Driver"
+	tristate "Qcom AOSS Reset Driver"
 	depends on ARCH_QCOM || COMPILE_TEST
 	help
 	  This enables the AOSS (always on subsystem) reset driver

drivers/reset/Makefile

···
 obj-$(CONFIG_RESET_AXS10X) += reset-axs10x.o
 obj-$(CONFIG_RESET_BERLIN) += reset-berlin.o
 obj-$(CONFIG_RESET_BRCMSTB) += reset-brcmstb.o
+obj-$(CONFIG_RESET_BRCMSTB_RESCAL) += reset-brcmstb-rescal.o
 obj-$(CONFIG_RESET_HSDK) += reset-hsdk.o
 obj-$(CONFIG_RESET_IMX7) += reset-imx7.o
+obj-$(CONFIG_RESET_INTEL_GW) += reset-intel-gw.o
 obj-$(CONFIG_RESET_LANTIQ) += reset-lantiq.o
 obj-$(CONFIG_RESET_LPC18XX) += reset-lpc18xx.o
 obj-$(CONFIG_RESET_MESON) += reset-meson.o
 obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o
+obj-$(CONFIG_RESET_NPCM) += reset-npcm.o
 obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
 obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o
 obj-$(CONFIG_RESET_QCOM_AOSS) += reset-qcom-aoss.o

drivers/reset/core.c

···
 		return -ENOMEM;
 
 	ret = reset_controller_register(rcdev);
-	if (!ret) {
-		*rcdevp = rcdev;
-		devres_add(dev, rcdevp);
-	} else {
+	if (ret) {
 		devres_free(rcdevp);
+		return ret;
 	}
+
+	*rcdevp = rcdev;
+	devres_add(dev, rcdevp);
 
 	return ret;
 }
···
 		return ERR_PTR(-ENOMEM);
 
 	rstc = __reset_control_get(dev, id, index, shared, optional, acquired);
-	if (!IS_ERR_OR_NULL(rstc)) {
-		*ptr = rstc;
-		devres_add(dev, ptr);
-	} else {
+	if (IS_ERR_OR_NULL(rstc)) {
 		devres_free(ptr);
+		return rstc;
 	}
+
+	*ptr = rstc;
+	devres_add(dev, ptr);
 
 	return rstc;
 }
···
 struct reset_control *
 devm_reset_control_array_get(struct device *dev, bool shared, bool optional)
 {
-	struct reset_control **devres;
-	struct reset_control *rstc;
+	struct reset_control **ptr, *rstc;
 
-	devres = devres_alloc(devm_reset_control_release, sizeof(*devres),
-			      GFP_KERNEL);
-	if (!devres)
+	ptr = devres_alloc(devm_reset_control_release, sizeof(*ptr),
+			   GFP_KERNEL);
+	if (!ptr)
 		return ERR_PTR(-ENOMEM);
 
 	rstc = of_reset_control_array_get(dev->of_node, shared, optional, true);
 	if (IS_ERR_OR_NULL(rstc)) {
-		devres_free(devres);
+		devres_free(ptr);
 		return rstc;
 	}
 
-	*devres = rstc;
-	devres_add(dev, devres);
+	*ptr = rstc;
+	devres_add(dev, ptr);
 
 	return rstc;
 }

drivers/reset/reset-brcmstb-rescal.c

···
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2018-2020 Broadcom */
+
+#include <linux/device.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset-controller.h>
+
+#define BRCM_RESCAL_START	0x0
+#define  BRCM_RESCAL_START_BIT	BIT(0)
+#define BRCM_RESCAL_CTRL	0x4
+#define BRCM_RESCAL_STATUS	0x8
+#define  BRCM_RESCAL_STATUS_BIT	BIT(0)
+
+struct brcm_rescal_reset {
+	void __iomem *base;
+	struct device *dev;
+	struct reset_controller_dev rcdev;
+};
+
+static int brcm_rescal_reset_set(struct reset_controller_dev *rcdev,
+				 unsigned long id)
+{
+	struct brcm_rescal_reset *data =
+		container_of(rcdev, struct brcm_rescal_reset, rcdev);
+	void __iomem *base = data->base;
+	u32 reg;
+	int ret;
+
+	reg = readl(base + BRCM_RESCAL_START);
+	writel(reg | BRCM_RESCAL_START_BIT, base + BRCM_RESCAL_START);
+	reg = readl(base + BRCM_RESCAL_START);
+	if (!(reg & BRCM_RESCAL_START_BIT)) {
+		dev_err(data->dev, "failed to start SATA/PCIe rescal\n");
+		return -EIO;
+	}
+
+	ret = readl_poll_timeout(base + BRCM_RESCAL_STATUS, reg,
+				 !(reg & BRCM_RESCAL_STATUS_BIT), 100, 1000);
+	if (ret) {
+		dev_err(data->dev, "time out on SATA/PCIe rescal\n");
+		return ret;
+	}
+
+	reg = readl(base + BRCM_RESCAL_START);
+	writel(reg & ~BRCM_RESCAL_START_BIT, base + BRCM_RESCAL_START);
+
+	dev_dbg(data->dev, "SATA/PCIe rescal success\n");
+
+	return 0;
+}
+
+static int brcm_rescal_reset_xlate(struct reset_controller_dev *rcdev,
+				   const struct of_phandle_args *reset_spec)
+{
+	/* This is needed if #reset-cells == 0. */
+	return 0;
+}
+
+static const struct reset_control_ops brcm_rescal_reset_ops = {
+	.reset = brcm_rescal_reset_set,
+};
+
+static int brcm_rescal_reset_probe(struct platform_device *pdev)
+{
+	struct brcm_rescal_reset *data;
+	struct resource *res;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	data->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(data->base))
+		return PTR_ERR(data->base);
+
+	data->rcdev.owner = THIS_MODULE;
+	data->rcdev.nr_resets = 1;
+	data->rcdev.ops = &brcm_rescal_reset_ops;
+	data->rcdev.of_node = pdev->dev.of_node;
+	data->rcdev.of_xlate = brcm_rescal_reset_xlate;
+	data->dev = &pdev->dev;
+
+	return devm_reset_controller_register(&pdev->dev, &data->rcdev);
+}
+
+static const struct of_device_id brcm_rescal_reset_of_match[] = {
+	{ .compatible = "brcm,bcm7216-pcie-sata-rescal" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, brcm_rescal_reset_of_match);
+
+static struct platform_driver brcm_rescal_reset_driver = {
+	.probe = brcm_rescal_reset_probe,
+	.driver = {
+		.name	= "brcm-rescal-reset",
+		.of_match_table	= brcm_rescal_reset_of_match,
+	}
+};
+module_platform_driver(brcm_rescal_reset_driver);
+
+MODULE_AUTHOR("Broadcom");
+MODULE_DESCRIPTION("Broadcom SATA/PCIe rescal reset controller");
+MODULE_LICENSE("GPL v2");

drivers/reset/reset-intel-gw.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 Intel Corporation.
+ * Lei Chuanhua <[e-mail]>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/init.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
+#include <linux/reset-controller.h>
+
+#define RCU_RST_STAT	0x0024
+#define RCU_RST_REQ	0x0048
+
+#define REG_OFFSET	GENMASK(31, 16)
+#define BIT_OFFSET	GENMASK(15, 8)
+#define STAT_BIT_OFFSET	GENMASK(7, 0)
+
+#define to_reset_data(x)	container_of(x, struct intel_reset_data, rcdev)
+
+struct intel_reset_soc {
+	bool legacy;
+	u32 reset_cell_count;
+};
+
+struct intel_reset_data {
+	struct reset_controller_dev rcdev;
+	struct notifier_block restart_nb;
+	const struct intel_reset_soc *soc_data;
+	struct regmap *regmap;
+	struct device *dev;
+	u32 reboot_id;
+};
+
+static const struct regmap_config intel_rcu_regmap_config = {
+	.name =		"intel-reset",
+	.reg_bits =	32,
+	.reg_stride =	4,
+	.val_bits =	32,
+	.fast_io =	true,
+};
+
+/*
+ * Reset status register offset relative to
+ * the reset control register(X) is X + 4
+ */
+static u32 id_to_reg_and_bit_offsets(struct intel_reset_data *data,
+				     unsigned long id, u32 *rst_req,
+				     u32 *req_bit, u32 *stat_bit)
+{
+	*rst_req = FIELD_GET(REG_OFFSET, id);
+	*req_bit = FIELD_GET(BIT_OFFSET, id);
+
+	if (data->soc_data->legacy)
+		*stat_bit = FIELD_GET(STAT_BIT_OFFSET, id);
+	else
+		*stat_bit = *req_bit;
+
+	if (data->soc_data->legacy && *rst_req == RCU_RST_REQ)
+		return RCU_RST_STAT;
+	else
+		return *rst_req + 0x4;
+}
+
+static int intel_set_clr_bits(struct intel_reset_data *data, unsigned long id,
+			      bool set)
+{
+	u32 rst_req, req_bit, rst_stat, stat_bit, val;
+	int ret;
+
+	rst_stat = id_to_reg_and_bit_offsets(data, id, &rst_req,
+					     &req_bit, &stat_bit);
+
+	val = set ? BIT(req_bit) : 0;
+	ret = regmap_update_bits(data->regmap, rst_req,  BIT(req_bit), val);
+	if (ret)
+		return ret;
+
+	return regmap_read_poll_timeout(data->regmap, rst_stat, val,
+					set == !!(val & BIT(stat_bit)), 20,
+					200);
+}
+
+static int intel_assert_device(struct reset_controller_dev *rcdev,
+			       unsigned long id)
+{
+	struct intel_reset_data *data = to_reset_data(rcdev);
+	int ret;
+
+	ret = intel_set_clr_bits(data, id, true);
+	if (ret)
+		dev_err(data->dev, "Reset assert failed %d\n", ret);
+
+	return ret;
+}
+
+static int intel_deassert_device(struct reset_controller_dev *rcdev,
+				 unsigned long id)
+{
+	struct intel_reset_data *data = to_reset_data(rcdev);
+	int ret;
+
+	ret = intel_set_clr_bits(data, id, false);
+	if (ret)
+		dev_err(data->dev, "Reset deassert failed %d\n", ret);
+
+	return ret;
+}
+
+static int intel_reset_status(struct reset_controller_dev *rcdev,
+			      unsigned long id)
+{
+	struct intel_reset_data *data = to_reset_data(rcdev);
+	u32 rst_req, req_bit, rst_stat, stat_bit, val;
+	int ret;
+
+	rst_stat = id_to_reg_and_bit_offsets(data, id, &rst_req,
+					     &req_bit, &stat_bit);
+	ret = regmap_read(data->regmap, rst_stat, &val);
+	if (ret)
+		return ret;
+
+	return !!(val & BIT(stat_bit));
+}
+
+static const struct reset_control_ops intel_reset_ops = {
+	.assert =	intel_assert_device,
+	.deassert =	intel_deassert_device,
+	.status	=	intel_reset_status,
+};
+
+static int intel_reset_xlate(struct reset_controller_dev *rcdev,
+			     const struct of_phandle_args *spec)
+{
+	struct intel_reset_data *data = to_reset_data(rcdev);
+	u32 id;
+
+	if (spec->args[1] > 31)
+		return -EINVAL;
+
+	id = FIELD_PREP(REG_OFFSET, spec->args[0]);
+	id |= FIELD_PREP(BIT_OFFSET, spec->args[1]);
+
+	if (data->soc_data->legacy) {
+		if (spec->args[2] > 31)
+			return -EINVAL;
+
+		id |= FIELD_PREP(STAT_BIT_OFFSET, spec->args[2]);
+	}
+
+	return id;
+}
+
+static int intel_reset_restart_handler(struct notifier_block *nb,
+				       unsigned long action, void *data)
+{
+	struct intel_reset_data *reset_data;
+
+	reset_data = container_of(nb, struct intel_reset_data, restart_nb);
+	intel_assert_device(&reset_data->rcdev, reset_data->reboot_id);
+
+	return NOTIFY_DONE;
+}
+
+static int intel_reset_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct device *dev = &pdev->dev;
+	struct intel_reset_data *data;
+	void __iomem *base;
+	u32 rb_id[3];
+	int ret;
+
+	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->soc_data = of_device_get_match_data(dev);
+	if (!data->soc_data)
+		return -ENODEV;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	data->regmap = devm_regmap_init_mmio(dev, base,
+					     &intel_rcu_regmap_config);
+	if (IS_ERR(data->regmap)) {
+		dev_err(dev, "regmap initialization failed\n");
+		return PTR_ERR(data->regmap);
+	}
+
+	ret = device_property_read_u32_array(dev, "intel,global-reset", rb_id,
+					     data->soc_data->reset_cell_count);
+	if (ret) {
+		dev_err(dev, "Failed to get global reset offset!\n");
+		return ret;
+	}
+
+	data->dev =			dev;
+	data->rcdev.of_node =		np;
+	data->rcdev.owner =		dev->driver->owner;
+	data->rcdev.ops	=		&intel_reset_ops;
+	data->rcdev.of_xlate =		intel_reset_xlate;
+	data->rcdev.of_reset_n_cells =	data->soc_data->reset_cell_count;
+	ret = devm_reset_controller_register(&pdev->dev, &data->rcdev);
+	if (ret)
+		return ret;
+
+	data->reboot_id = FIELD_PREP(REG_OFFSET, rb_id[0]);
+	data->reboot_id |= FIELD_PREP(BIT_OFFSET, rb_id[1]);
+
+	if (data->soc_data->legacy)
+		data->reboot_id |= FIELD_PREP(STAT_BIT_OFFSET, rb_id[2]);
+
+	data->restart_nb.notifier_call =	intel_reset_restart_handler;
+	data->restart_nb.priority =		128;
+	register_restart_handler(&data->restart_nb);
+
+	return 0;
+}
+
+static const struct intel_reset_soc xrx200_data = {
+	.legacy =		true,
+	.reset_cell_count =	3,
+};
+
+static const struct intel_reset_soc lgm_data = {
+	.legacy =		false,
+	.reset_cell_count =	2,
+};
+
+static const struct of_device_id intel_reset_match[] = {
+	{ .compatible = "intel,rcu-lgm", .data = &lgm_data },
+	{ .compatible = "intel,rcu-xrx200", .data = &xrx200_data },
+	{}
+};
+
+static struct platform_driver intel_reset_driver = {
+	.probe = intel_reset_probe,
+	.driver = {
+		.name = "intel-reset",
+		.of_match_table = intel_reset_match,
+	},
+};
+
+static int __init intel_reset_init(void)
+{
+	return platform_driver_register(&intel_reset_driver);
+}
+
+/*
+ * RCU is system core entity which is in Always On Domain whose clocks
+ * or resource initialization happens in system core initialization.
+ * Also, it is required for most of the platform or architecture
+ * specific devices to perform reset operation as part of initialization.
+ * So perform RCU as post core initialization.
+ */
+postcore_initcall(intel_reset_init);

drivers/reset/reset-npcm.c

···
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2019 Nuvoton Technology corporation.
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/reset-controller.h>
+#include <linux/spinlock.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/of_address.h>
+
+/* NPCM7xx GCR registers */
+#define NPCM_MDLR_OFFSET	0x7C
+#define NPCM_MDLR_USBD0		BIT(9)
+#define NPCM_MDLR_USBD1		BIT(8)
+#define NPCM_MDLR_USBD2_4	BIT(21)
+#define NPCM_MDLR_USBD5_9	BIT(22)
+
+#define NPCM_USB1PHYCTL_OFFSET	0x140
+#define NPCM_USB2PHYCTL_OFFSET	0x144
+#define NPCM_USBXPHYCTL_RS	BIT(28)
+
+/* NPCM7xx Reset registers */
+#define NPCM_SWRSTR		0x14
+#define NPCM_SWRST		BIT(2)
+
+#define NPCM_IPSRST1		0x20
+#define NPCM_IPSRST1_USBD1	BIT(5)
+#define NPCM_IPSRST1_USBD2	BIT(8)
+#define NPCM_IPSRST1_USBD3	BIT(25)
+#define NPCM_IPSRST1_USBD4	BIT(22)
+#define NPCM_IPSRST1_USBD5	BIT(23)
+#define NPCM_IPSRST1_USBD6	BIT(24)
+
+#define NPCM_IPSRST2		0x24
+#define NPCM_IPSRST2_USB_HOST	BIT(26)
+
+#define NPCM_IPSRST3		0x34
+#define NPCM_IPSRST3_USBD0	BIT(4)
+#define NPCM_IPSRST3_USBD7	BIT(5)
+#define NPCM_IPSRST3_USBD8	BIT(6)
+#define NPCM_IPSRST3_USBD9	BIT(7)
+#define NPCM_IPSRST3_USBPHY1	BIT(24)
+#define NPCM_IPSRST3_USBPHY2	BIT(25)
+
+#define NPCM_RC_RESETS_PER_REG	32
+#define NPCM_MASK_RESETS	GENMASK(4, 0)
+
+struct npcm_rc_data {
+	struct reset_controller_dev rcdev;
+	struct notifier_block restart_nb;
+	u32 sw_reset_number;
+	void __iomem *base;
+	spinlock_t lock;
+};
+
+#define to_rc_data(p) container_of(p, struct npcm_rc_data, rcdev)
+
+static int npcm_rc_restart(struct notifier_block *nb, unsigned long mode,
+			   void *cmd)
+{
+	struct npcm_rc_data *rc = container_of(nb, struct npcm_rc_data,
+					       restart_nb);
+
+	writel(NPCM_SWRST << rc->sw_reset_number, rc->base + NPCM_SWRSTR);
+	mdelay(1000);
+
+	pr_emerg("%s: unable to restart system\n", __func__);
+
+	return NOTIFY_DONE;
+}
+
+static int npcm_rc_setclear_reset(struct reset_controller_dev *rcdev,
+				  unsigned long id, bool set)
+{
+	struct npcm_rc_data *rc = to_rc_data(rcdev);
+	unsigned int rst_bit = BIT(id & NPCM_MASK_RESETS);
+	unsigned int ctrl_offset = id >> 8;
+	unsigned long flags;
+	u32 stat;
+
+	spin_lock_irqsave(&rc->lock, flags);
+	stat = readl(rc->base + ctrl_offset);
+	if (set)
+		writel(stat | rst_bit, rc->base + ctrl_offset);
+	else
+		writel(stat & ~rst_bit, rc->base + ctrl_offset);
+	spin_unlock_irqrestore(&rc->lock, flags);
+
+	return 0;
+}
+
+static int npcm_rc_assert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+	return npcm_rc_setclear_reset(rcdev, id, true);
+}
+
+static int npcm_rc_deassert(struct reset_controller_dev *rcdev,
+			    unsigned long id)
+{
+	return npcm_rc_setclear_reset(rcdev, id, false);
+}
+
+static int npcm_rc_status(struct reset_controller_dev *rcdev,
+			  unsigned long id)
+{
+	struct npcm_rc_data *rc = to_rc_data(rcdev);
+	unsigned int rst_bit = BIT(id & NPCM_MASK_RESETS);
+	unsigned int ctrl_offset = id >> 8;
+
+	return (readl(rc->base + ctrl_offset) & rst_bit);
+}
+
+static int npcm_reset_xlate(struct reset_controller_dev *rcdev,
+			    const struct of_phandle_args *reset_spec)
+{
+	unsigned int offset, bit;
+
+	offset = reset_spec->args[0];
+	if (offset != NPCM_IPSRST1 && offset != NPCM_IPSRST2 &&
+	    offset != NPCM_IPSRST3) {
+		dev_err(rcdev->dev, "Error reset register (0x%x)\n", offset);
+		return -EINVAL;
+	}
+	bit = reset_spec->args[1];
+	if (bit >= NPCM_RC_RESETS_PER_REG) {
+		dev_err(rcdev->dev, "Error reset number (%d)\n", bit);
+		return -EINVAL;
+	}
+
+	return (offset << 8) | bit;
+}
+
+static const struct of_device_id npcm_rc_match[] = {
+	{ .compatible = "nuvoton,npcm750-reset",
+		.data = (void *)"nuvoton,npcm750-gcr" },
+	{ }
+};
+
+/*
+ *  The following procedure should be observed in USB PHY, USB device and
+ *  USB host initialization at BMC boot
+ */
+static int npcm_usb_reset(struct platform_device *pdev, struct npcm_rc_data *rc)
+{
+	u32 mdlr, iprst1, iprst2, iprst3;
+	struct device *dev = &pdev->dev;
+	struct regmap *gcr_regmap;
+	u32 ipsrst1_bits = 0;
+	u32 ipsrst2_bits = NPCM_IPSRST2_USB_HOST;
+	u32 ipsrst3_bits = 0;
+	const char *gcr_dt;
+
+	gcr_dt = (const char *)
+	of_match_device(dev->driver->of_match_table, dev)->data;
+
+	gcr_regmap = syscon_regmap_lookup_by_compatible(gcr_dt);
+	if (IS_ERR(gcr_regmap)) {
+		dev_err(&pdev->dev, "Failed to find %s\n", gcr_dt);
+		return PTR_ERR(gcr_regmap);
+	}
+
+	/* checking which USB device is enabled */
+	regmap_read(gcr_regmap, NPCM_MDLR_OFFSET, &mdlr);
+	if (!(mdlr & NPCM_MDLR_USBD0))
+		ipsrst3_bits |= NPCM_IPSRST3_USBD0;
+	if (!(mdlr & NPCM_MDLR_USBD1))
+		ipsrst1_bits |= NPCM_IPSRST1_USBD1;
+	if (!(mdlr & NPCM_MDLR_USBD2_4))
+		ipsrst1_bits |= (NPCM_IPSRST1_USBD2 |
+				 NPCM_IPSRST1_USBD3 |
+				 NPCM_IPSRST1_USBD4);
+	if (!(mdlr & NPCM_MDLR_USBD0)) {
+		ipsrst1_bits |= (NPCM_IPSRST1_USBD5 |
+				 NPCM_IPSRST1_USBD6);
+		ipsrst3_bits |= (NPCM_IPSRST3_USBD7 |
+				 NPCM_IPSRST3_USBD8 |
+				 NPCM_IPSRST3_USBD9);
+	}
+
+	/* assert reset USB PHY and USB devices */
+	iprst1 = readl(rc->base + NPCM_IPSRST1);
+	iprst2 = readl(rc->base + NPCM_IPSRST2);
+	iprst3 = readl(rc->base + NPCM_IPSRST3);
+
+	iprst1 |= ipsrst1_bits;
+	iprst2 |= ipsrst2_bits;
+	iprst3 |= (ipsrst3_bits | NPCM_IPSRST3_USBPHY1 |
+		   NPCM_IPSRST3_USBPHY2);
+
+	writel(iprst1, rc->base + NPCM_IPSRST1);
+	writel(iprst2, rc->base + NPCM_IPSRST2);
+	writel(iprst3, rc->base + NPCM_IPSRST3);
+
+	/* clear USB PHY RS bit */
+	regmap_update_bits(gcr_regmap, NPCM_USB1PHYCTL_OFFSET,
+			   NPCM_USBXPHYCTL_RS, 0);
+	regmap_update_bits(gcr_regmap, NPCM_USB2PHYCTL_OFFSET,
+			   NPCM_USBXPHYCTL_RS, 0);
+
+	/* deassert reset USB PHY */
+	iprst3 &= ~(NPCM_IPSRST3_USBPHY1 | NPCM_IPSRST3_USBPHY2);
+	writel(iprst3, rc->base + NPCM_IPSRST3);
+
+	udelay(50);
+
+	/* set USB PHY RS bit */
+	regmap_update_bits(gcr_regmap, NPCM_USB1PHYCTL_OFFSET,
+			   NPCM_USBXPHYCTL_RS, NPCM_USBXPHYCTL_RS);
+	regmap_update_bits(gcr_regmap, NPCM_USB2PHYCTL_OFFSET,
+			   NPCM_USBXPHYCTL_RS, NPCM_USBXPHYCTL_RS);
+
+	/* deassert reset USB devices*/
+	iprst1 &= ~ipsrst1_bits;
+	iprst2 &= ~ipsrst2_bits;
+	iprst3 &= ~ipsrst3_bits;
+
+	writel(iprst1, rc->base + NPCM_IPSRST1);
+	writel(iprst2, rc->base + NPCM_IPSRST2);
+	writel(iprst3, rc->base + NPCM_IPSRST3);
+
+	return 0;
+}
+
+static const struct reset_control_ops npcm_rc_ops = {
+	.assert		= npcm_rc_assert,
+	.deassert	= npcm_rc_deassert,
+	.status		= npcm_rc_status,
+};
+
+static int npcm_rc_probe(struct platform_device *pdev)
+{
+	struct npcm_rc_data *rc;
+	int ret;
+
+	rc = devm_kzalloc(&pdev->dev, sizeof(*rc), GFP_KERNEL);
+	if (!rc)
+		return -ENOMEM;
+
+	rc->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(rc->base))
+		return PTR_ERR(rc->base);
+
+	spin_lock_init(&rc->lock);
+
+	rc->rcdev.owner = THIS_MODULE;
+	rc->rcdev.ops = &npcm_rc_ops;
+	rc->rcdev.of_node = pdev->dev.of_node;
+	rc->rcdev.of_reset_n_cells = 2;
+	rc->rcdev.of_xlate = npcm_reset_xlate;
+
+	platform_set_drvdata(pdev, rc);
+
+	ret = devm_reset_controller_register(&pdev->dev, &rc->rcdev);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to register device\n");
+		return ret;
+	}
+
+	if (npcm_usb_reset(pdev, rc))
+		dev_warn(&pdev->dev, "NPCM USB reset failed, can cause issues with UDC and USB host\n");
+
+	if (!of_property_read_u32(pdev->dev.of_node, "nuvoton,sw-reset-number",
+				  &rc->sw_reset_number)) {
+		if (rc->sw_reset_number && rc->sw_reset_number < 5) {
+			rc->restart_nb.priority = 192,
+			rc->restart_nb.notifier_call = npcm_rc_restart,
+			ret = register_restart_handler(&rc->restart_nb);
+			if (ret)
+				dev_warn(&pdev->dev, "failed to register restart handler\n");
+		}
+	}
+
+	return ret;
+}
+
+static struct platform_driver npcm_rc_driver = {
+	.probe	= npcm_rc_probe,
+	.driver	= {
+		.name			= "npcm-reset",
+		.of_match_table		= npcm_rc_match,
+		.suppress_bind_attrs	= true,
+	},
+};
+builtin_platform_driver(npcm_rc_driver);

drivers/reset/reset-qcom-aoss.c

···
 	{ .compatible = "qcom,sdm845-aoss-cc", .data = &sdm845_aoss_desc },
 	{}
 };
+MODULE_DEVICE_TABLE(of, qcom_aoss_reset_of_match);
 
 static struct platform_driver qcom_aoss_reset_driver = {
 	.probe = qcom_aoss_reset_probe,
···
 	},
 };
 
-builtin_platform_driver(qcom_aoss_reset_driver);
+module_platform_driver(qcom_aoss_reset_driver);
 
 MODULE_DESCRIPTION("Qualcomm AOSS Reset Driver");
 MODULE_LICENSE("GPL v2");

drivers/reset/reset-scmi.c

···
 }
 
 static const struct scmi_device_id scmi_id_table[] = {
-	{ SCMI_PROTOCOL_RESET },
+	{ SCMI_PROTOCOL_RESET, "reset" },
 	{ },
 };
 MODULE_DEVICE_TABLE(scmi, scmi_id_table);

drivers/reset/reset-uniphier.c

···
 #define UNIPHIER_PERI_RESET_FI2C(id, ch)		\
 	UNIPHIER_RESETX((id), 0x114, 24 + (ch))
 
-#define UNIPHIER_PERI_RESET_SCSSI(id)			\
-	UNIPHIER_RESETX((id), 0x110, 17)
+#define UNIPHIER_PERI_RESET_SCSSI(id, ch)		\
+	UNIPHIER_RESETX((id), 0x110, 17 + (ch))
 
 #define UNIPHIER_PERI_RESET_MCSSI(id)			\
 	UNIPHIER_RESETX((id), 0x114, 14)
···
 	UNIPHIER_PERI_RESET_I2C(6, 2),
 	UNIPHIER_PERI_RESET_I2C(7, 3),
 	UNIPHIER_PERI_RESET_I2C(8, 4),
-	UNIPHIER_PERI_RESET_SCSSI(11),
+	UNIPHIER_PERI_RESET_SCSSI(11, 0),
 	UNIPHIER_RESET_END,
 };
 
···
 	UNIPHIER_PERI_RESET_FI2C(8, 4),
 	UNIPHIER_PERI_RESET_FI2C(9, 5),
 	UNIPHIER_PERI_RESET_FI2C(10, 6),
-	UNIPHIER_PERI_RESET_SCSSI(11),
-	UNIPHIER_PERI_RESET_MCSSI(12),
+	UNIPHIER_PERI_RESET_SCSSI(11, 0),
+	UNIPHIER_PERI_RESET_SCSSI(12, 1),
+	UNIPHIER_PERI_RESET_SCSSI(13, 2),
+	UNIPHIER_PERI_RESET_SCSSI(14, 3),
+	UNIPHIER_PERI_RESET_MCSSI(15),
 	UNIPHIER_RESET_END,
 };
 

drivers/soc/bcm/brcmstb/biuctrl.c

···
 	[CPU_WRITEBACK_CTRL_REG] = -1,
 };
 
-/* Odd cases, e.g: 7260 */
+/* Odd cases, e.g: 7260A0 */
 static const int b53_cpubiuctrl_no_wb_regs[] = {
 	[CPU_CREDIT_REG] = 0x0b0,
 	[CPU_MCP_FLOW_REG] = 0x0b4,
···
 	[CPU_CREDIT_REG] = 0x0b0,
 	[CPU_MCP_FLOW_REG] = 0x0b4,
 	[CPU_WRITEBACK_CTRL_REG] = 0x22c,
+};
+
+static const int a72_cpubiuctrl_regs[] = {
+	[CPU_CREDIT_REG] = 0x18,
+	[CPU_MCP_FLOW_REG] = 0x1c,
+	[CPU_WRITEBACK_CTRL_REG] = 0x20,
 };
 
 #define NUM_CPU_BIUCTRL_REGS	3
···
 	return 0;
 }
 
-static const u32 b53_mach_compat[] = {
+static const u32 a72_b53_mach_compat[] = {
+	0x7211,
+	0x7216,
+	0x7255,
+	0x7260,
 	0x7268,
 	0x7271,
 	0x7278,
 };
 
-static void __init mcp_b53_set(void)
+static void __init mcp_a72_b53_set(void)
 {
 	unsigned int i;
 	u32 reg;
 
 	reg = brcmstb_get_family_id();
 
-	for (i = 0; i < ARRAY_SIZE(b53_mach_compat); i++) {
-		if (BRCM_ID(reg) == b53_mach_compat[i])
+	for (i = 0; i < ARRAY_SIZE(a72_b53_mach_compat); i++) {
+		if (BRCM_ID(reg) == a72_b53_mach_compat[i])
 			break;
 	}
 
-	if (i == ARRAY_SIZE(b53_mach_compat))
+	if (i == ARRAY_SIZE(a72_b53_mach_compat))
 		return;
 
 	/* Set all 3 MCP interfaces to 8 credits */
···
 static int __init setup_hifcpubiuctrl_regs(struct device_node *np)
 {
 	struct device_node *cpu_dn;
+	u32 family_id;
 	int ret = 0;
 
 	cpubiuctrl_base = of_iomap(np, 0);
···
 		cpubiuctrl_regs = b15_cpubiuctrl_regs;
 	else if (of_device_is_compatible(cpu_dn, "brcm,brahma-b53"))
 		cpubiuctrl_regs = b53_cpubiuctrl_regs;
+	else if (of_device_is_compatible(cpu_dn, "arm,cortex-a72"))
+		cpubiuctrl_regs = a72_cpubiuctrl_regs;
 	else {
 		pr_err("unsupported CPU\n");
 		ret = -EINVAL;
 	}
 	of_node_put(cpu_dn);
 
-	if (BRCM_ID(brcmstb_get_family_id()) == 0x7260)
+	family_id = brcmstb_get_family_id();
+	if (BRCM_ID(family_id) == 0x7260 && BRCM_REV(family_id) == 0)
 		cpubiuctrl_regs = b53_cpubiuctrl_no_wb_regs;
 out:
 	of_node_put(np);
···
 		return ret;
 	}
 
-	mcp_b53_set();
+	mcp_a72_b53_set();
 #ifdef CONFIG_PM_SLEEP
 	register_syscore_ops(&brcmstb_cpu_credit_syscore_ops);
 #endif

drivers/soc/fsl/qe/Kconfig

···
 
 config QUICC_ENGINE
 	bool "QUICC Engine (QE) framework support"
-	depends on FSL_SOC && PPC32
+	depends on OF && HAS_IOMEM
+	depends on PPC || ARM || ARM64 || COMPILE_TEST
 	select GENERIC_ALLOCATOR
 	select CRC32
 	help

drivers/soc/fsl/qe/gpio.c

···
 		container_of(mm_gc, struct qe_gpio_chip, mm_gc);
 	struct qe_pio_regs __iomem *regs = mm_gc->regs;
 
-	qe_gc->cpdata = in_be32(&regs->cpdata);
+	qe_gc->cpdata = qe_ioread32be(&regs->cpdata);
 	qe_gc->saved_regs.cpdata = qe_gc->cpdata;
-	qe_gc->saved_regs.cpdir1 = in_be32(&regs->cpdir1);
-	qe_gc->saved_regs.cpdir2 = in_be32(&regs->cpdir2);
-	qe_gc->saved_regs.cppar1 = in_be32(&regs->cppar1);
-	qe_gc->saved_regs.cppar2 = in_be32(&regs->cppar2);
-	qe_gc->saved_regs.cpodr = in_be32(&regs->cpodr);
+	qe_gc->saved_regs.cpdir1 = qe_ioread32be(&regs->cpdir1);
+	qe_gc->saved_regs.cpdir2 = qe_ioread32be(&regs->cpdir2);
+	qe_gc->saved_regs.cppar1 = qe_ioread32be(&regs->cppar1);
+	qe_gc->saved_regs.cppar2 = qe_ioread32be(&regs->cppar2);
+	qe_gc->saved_regs.cpodr = qe_ioread32be(&regs->cpodr);
 }
 
 static int qe_gpio_get(struct gpio_chip *gc, unsigned int gpio)
···
 	struct qe_pio_regs __iomem *regs = mm_gc->regs;
 	u32 pin_mask = 1 << (QE_PIO_PINS - 1 - gpio);
 
-	return !!(in_be32(&regs->cpdata) & pin_mask);
+	return !!(qe_ioread32be(&regs->cpdata) & pin_mask);
 }
 
 static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
···
 	else
 		qe_gc->cpdata &= ~pin_mask;
 
-	out_be32(&regs->cpdata, qe_gc->cpdata);
+	qe_iowrite32be(qe_gc->cpdata, &regs->cpdata);
 
 	spin_unlock_irqrestore(&qe_gc->lock, flags);
 }
···
 		}
 	}
 
-	out_be32(&regs->cpdata, qe_gc->cpdata);
+	qe_iowrite32be(qe_gc->cpdata, &regs->cpdata);
 
 	spin_unlock_irqrestore(&qe_gc->lock, flags);
 }
···
 {
 	struct qe_pin *qe_pin;
 	struct gpio_chip *gc;
-	struct of_mm_gpio_chip *mm_gc;
 	struct qe_gpio_chip *qe_gc;
 	int err;
 	unsigned long flags;
···
 		goto err0;
 	}
 
-	mm_gc = to_of_mm_gpio_chip(gc);
 	qe_gc = gpiochip_get_data(gc);
 
 	spin_lock_irqsave(&qe_gc->lock, flags);
···
 	spin_lock_irqsave(&qe_gc->lock, flags);
 
 	if (second_reg) {
-		clrsetbits_be32(&regs->cpdir2, mask2, sregs->cpdir2 & mask2);
-		clrsetbits_be32(&regs->cppar2, mask2, sregs->cppar2 & mask2);
+		qe_clrsetbits_be32(&regs->cpdir2, mask2,
+				   sregs->cpdir2 & mask2);
+		qe_clrsetbits_be32(&regs->cppar2, mask2,
+				   sregs->cppar2 & mask2);
 	} else {
-		clrsetbits_be32(&regs->cpdir1, mask2, sregs->cpdir1 & mask2);
-		clrsetbits_be32(&regs->cppar1, mask2, sregs->cppar1 & mask2);
+		qe_clrsetbits_be32(&regs->cpdir1, mask2,
+				   sregs->cpdir1 & mask2);
+		qe_clrsetbits_be32(&regs->cppar1, mask2,
+				   sregs->cppar1 & mask2);
 	}
 
 	if (sregs->cpdata & mask1)
···
 	else
 		qe_gc->cpdata &= ~mask1;
 
-	out_be32(&regs->cpdata, qe_gc->cpdata);
-	clrsetbits_be32(&regs->cpodr, mask1, sregs->cpodr & mask1);
+	qe_iowrite32be(qe_gc->cpdata, &regs->cpdata);
+	qe_clrsetbits_be32(&regs->cpodr, mask1, sregs->cpodr & mask1);
 
 	spin_unlock_irqrestore(&qe_gc->lock, flags);
 }

drivers/soc/fsl/qe/qe.c

···
 #include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/ioport.h>
+#include <linux/iopoll.h>
 #include <linux/crc32.h>
 #include <linux/mod_devicetable.h>
 #include <linux/of_platform.h>
-#include <asm/irq.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
 #include <soc/fsl/qe/immap_qe.h>
 #include <soc/fsl/qe/qe.h>
-#include <asm/prom.h>
-#include <asm/rheap.h>
 
 static void qe_snums_init(void);
 static int qe_sdma_init(void);
···
 {
 	unsigned long flags;
 	u8 mcn_shift = 0, dev_shift = 0;
-	u32 ret;
+	u32 val;
+	int ret;
 
 	spin_lock_irqsave(&qe_lock, flags);
 	if (cmd == QE_RESET) {
-		out_be32(&qe_immr->cp.cecr, (u32) (cmd | QE_CR_FLG));
+		qe_iowrite32be((u32)(cmd | QE_CR_FLG), &qe_immr->cp.cecr);
 	} else {
 		if (cmd == QE_ASSIGN_PAGE) {
 			/* Here device is the SNUM, not sub-block */
···
 				mcn_shift = QE_CR_MCN_NORMAL_SHIFT;
 		}
 
-		out_be32(&qe_immr->cp.cecdr, cmd_input);
-		out_be32(&qe_immr->cp.cecr,
-			 (cmd | QE_CR_FLG | ((u32) device << dev_shift) | (u32)
-			  mcn_protocol << mcn_shift));
+		qe_iowrite32be(cmd_input, &qe_immr->cp.cecdr);
+		qe_iowrite32be((cmd | QE_CR_FLG | ((u32)device << dev_shift) | (u32)mcn_protocol << mcn_shift),
+			       &qe_immr->cp.cecr);
 	}
 
 	/* wait for the QE_CR_FLG to clear */
-	ret = spin_event_timeout((in_be32(&qe_immr->cp.cecr) & QE_CR_FLG) == 0,
-			   100, 0);
-	/* On timeout (e.g. failure), the expression will be false (ret == 0),
-	   otherwise it will be true (ret == 1). */
+	ret = readx_poll_timeout_atomic(qe_ioread32be, &qe_immr->cp.cecr, val,
+					(val & QE_CR_FLG) == 0, 0, 100);
+	/* On timeout, ret is -ETIMEDOUT, otherwise it will be 0. */
 	spin_unlock_irqrestore(&qe_lock, flags);
 
-	return ret == 1;
+	return ret == 0;
 }
 EXPORT_SYMBOL(qe_issue_cmd);
 
···
 unsigned int qe_get_brg_clk(void)
 {
 	struct device_node *qe;
-	int size;
-	const u32 *prop;
+	u32 brg;
 	unsigned int mod;
 
 	if (brg_clk)
···
 	if (!qe)
 		return brg_clk;
 
-	prop = of_get_property(qe, "brg-frequency", &size);
-	if (prop && size == sizeof(*prop))
-		brg_clk = *prop;
+	if (!of_property_read_u32(qe, "brg-frequency", &brg))
+		brg_clk = brg;
 
 	of_node_put(qe);
 
···
 
 #define PVR_VER_836x	0x8083
 #define PVR_VER_832x	0x8084
+
+static bool qe_general4_errata(void)
+{
+#ifdef CONFIG_PPC32
+	return pvr_version_is(PVR_VER_836x) || pvr_version_is(PVR_VER_832x);
+#endif
+	return false;
+}
 
 /* Program the BRG to the given sampling rate and multiplier
  *
···
 	/* Errata QE_General4, which affects some MPC832x and MPC836x SOCs, says
 	   that the BRG divisor must be even if you're not using divide-by-16
 	   mode. */
-	if (pvr_version_is(PVR_VER_836x) || pvr_version_is(PVR_VER_832x))
+	if (qe_general4_errata())
 		if (!div16 && (divisor & 1) && (divisor > 3))
 			divisor++;
 
 	tempval = ((divisor - 1) << QE_BRGC_DIVISOR_SHIFT) |
 		QE_BRGC_ENABLE | div16;
 
-	out_be32(&qe_immr->brg.brgc[brg - QE_BRG1], tempval);
+	qe_iowrite32be(tempval, &qe_immr->brg.brgc[brg - QE_BRG1]);
 
 	return 0;
 }
···
 static int qe_sdma_init(void)
 {
 	struct sdma __iomem *sdma = &qe_immr->sdma;
-	static unsigned long sdma_buf_offset = (unsigned long)-ENOMEM;
-
-	if (!sdma)
-		return -ENODEV;
+	static s32 sdma_buf_offset = -ENOMEM;
 
 	/* allocate 2 internal temporary buffers (512 bytes size each) for
 	 * the SDMA */
-	if (IS_ERR_VALUE(sdma_buf_offset)) {
+	if (sdma_buf_offset < 0) {
 		sdma_buf_offset = qe_muram_alloc(512 * 2, 4096);
-		if (IS_ERR_VALUE(sdma_buf_offset))
+		if (sdma_buf_offset < 0)
 			return -ENOMEM;
 	}
 
-	out_be32(&sdma->sdebcr, (u32) sdma_buf_offset & QE_SDEBCR_BA_MASK);
- 	out_be32(&sdma->sdmr, (QE_SDMR_GLB_1_MSK |
- 					(0x1 << QE_SDMR_CEN_SHIFT)));
+	qe_iowrite32be((u32)sdma_buf_offset & QE_SDEBCR_BA_MASK,
+		       &sdma->sdebcr);
+	qe_iowrite32be((QE_SDMR_GLB_1_MSK | (0x1 << QE_SDMR_CEN_SHIFT)),
+		       &sdma->sdmr);
 
 	return 0;
 }
···
 			"uploading microcode '%s'\n", ucode->id);
 
 	/* Use auto-increment */
-	out_be32(&qe_immr->iram.iadd, be32_to_cpu(ucode->iram_offset) |
-		QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR);
+	qe_iowrite32be(be32_to_cpu(ucode->iram_offset) | QE_IRAM_IADD_AIE | QE_IRAM_IADD_BADDR,
+		       &qe_immr->iram.iadd);
 
 	for (i = 0; i < be32_to_cpu(ucode->count); i++)
-		out_be32(&qe_immr->iram.idata, be32_to_cpu(code[i]));
+		qe_iowrite32be(be32_to_cpu(code[i]), &qe_immr->iram.idata);
 	
 	/* Set I-RAM Ready Register */
-	out_be32(&qe_immr->iram.iready, be32_to_cpu(QE_IRAM_READY));
+	qe_iowrite32be(be32_to_cpu(QE_IRAM_READY), &qe_immr->iram.iready);
 }
 
 /*
···
 	 * If the microcode calls for it, split the I-RAM.
 	 */
 	if (!firmware->split)
-		setbits16(&qe_immr->cp.cercr, QE_CP_CERCR_CIR);
+		qe_setbits_be16(&qe_immr->cp.cercr, QE_CP_CERCR_CIR);
 
 	if (firmware->soc.model)
 		printk(KERN_INFO
···
 			u32 trap = be32_to_cpu(ucode->traps[j]);
 
 			if (trap)
-				out_be32(&qe_immr->rsp[i].tibcr[j], trap);
+				qe_iowrite32be(trap,
+					       &qe_immr->rsp[i].tibcr[j]);
 		}
 
 		/* Enable traps */
-		out_be32(&qe_immr->rsp[i].eccr, be32_to_cpu(ucode->eccr));
+		qe_iowrite32be(be32_to_cpu(ucode->eccr),
+			       &qe_immr->rsp[i].eccr);
 	}
 
 	qe_firmware_uploaded = 1;
···
 struct qe_firmware_info *qe_get_firmware_info(void)
 {
 	static int initialized;
-	struct property *prop;
 	struct device_node *qe;
 	struct device_node *fw = NULL;
 	const char *sprop;
-	unsigned int i;
 
 	/*
 	 * If we haven't checked yet, and a driver hasn't uploaded a firmware
···
 		strlcpy(qe_firmware_info.id, sprop,
 			sizeof(qe_firmware_info.id));
 
-	prop = of_find_property(fw, "extended-modes", NULL);
-	if (prop && (prop->length == sizeof(u64))) {
-		const u64 *iprop = prop->value;
+	of_property_read_u64(fw, "extended-modes",
+			     &qe_firmware_info.extended_modes);
 
-		qe_firmware_info.extended_modes = *iprop;
-	}
-
-	prop = of_find_property(fw, "virtual-traps", NULL);
-	if (prop && (prop->length == 32)) {
-		const u32 *iprop = prop->value;
-
-		for (i = 0; i < ARRAY_SIZE(qe_firmware_info.vtraps); i++)
-			qe_firmware_info.vtraps[i] = iprop[i];
-	}
+	of_property_read_u32_array(fw, "virtual-traps", qe_firmware_info.vtraps,
+				   ARRAY_SIZE(qe_firmware_info.vtraps));
 
 	of_node_put(fw);
 
···
 unsigned int qe_get_num_of_risc(void)
 {
 	struct device_node *qe;
-	int size;
 	unsigned int num_of_risc = 0;
-	const u32 *prop;
 
 	qe = qe_get_device_node();
 	if (!qe)
 		return num_of_risc;
 
-	prop = of_get_property(qe, "fsl,qe-num-riscs", &size);
-	if (prop && size == sizeof(*prop))
-		num_of_risc = *prop;
+	of_property_read_u32(qe, "fsl,qe-num-riscs", &num_of_risc);
 
 	of_node_put(qe);
 

drivers/soc/fsl/qe/qe_common.c

···
 
 struct muram_block {
 	struct list_head head;
-	unsigned long start;
+	s32 start;
 	int size;
 };
 
···
  * @algo: algorithm for alloc.
  * @data: data for genalloc's algorithm.
  *
- * This function returns an offset into the muram area.
+ * This function returns a non-negative offset into the muram area, or
+ * a negative errno on failure.
  */
-static unsigned long cpm_muram_alloc_common(unsigned long size,
-		genpool_algo_t algo, void *data)
+static s32 cpm_muram_alloc_common(unsigned long size,
+				  genpool_algo_t algo, void *data)
 {
 	struct muram_block *entry;
-	unsigned long start;
+	s32 start;
 
-	if (!muram_pool && cpm_muram_init())
-		goto out2;
-
-	start = gen_pool_alloc_algo(muram_pool, size, algo, data);
-	if (!start)
-		goto out2;
-	start = start - GENPOOL_OFFSET;
-	memset_io(cpm_muram_addr(start), 0, size);
 	entry = kmalloc(sizeof(*entry), GFP_ATOMIC);
 	if (!entry)
-		goto out1;
+		return -ENOMEM;
+	start = gen_pool_alloc_algo(muram_pool, size, algo, data);
+	if (!start) {
+		kfree(entry);
+		return -ENOMEM;
+	}
+	start = start - GENPOOL_OFFSET;
+	memset_io(cpm_muram_addr(start), 0, size);
 	entry->start = start;
 	entry->size = size;
 	list_add(&entry->head, &muram_block_list);
 
 	return start;
-out1:
-	gen_pool_free(muram_pool, start, size);
-out2:
-	return (unsigned long)-ENOMEM;
 }
 
 /*
···
  * @size: number of bytes to allocate
  * @align: requested alignment, in bytes
  *
- * This function returns an offset into the muram area.
+ * This function returns a non-negative offset into the muram area, or
+ * a negative errno on failure.
  * Use cpm_dpram_addr() to get the virtual address of the area.
  * Use cpm_muram_free() to free the allocation.
  */
-unsigned long cpm_muram_alloc(unsigned long size, unsigned long align)
+s32 cpm_muram_alloc(unsigned long size, unsigned long align)
 {
-	unsigned long start;
+	s32 start;
 	unsigned long flags;
 	struct genpool_data_align muram_pool_data;
 
···
  * cpm_muram_free - free a chunk of multi-user ram
  * @offset: The beginning of the chunk as returned by cpm_muram_alloc().
  */
-int cpm_muram_free(unsigned long offset)
+void cpm_muram_free(s32 offset)
 {
 	unsigned long flags;
 	int size;
 	struct muram_block *tmp;
+
+	if (offset < 0)
+		return;
 
 	size = 0;
 	spin_lock_irqsave(&cpm_muram_lock, flags);
···
 	}
 	gen_pool_free(muram_pool, offset + GENPOOL_OFFSET, size);
 	spin_unlock_irqrestore(&cpm_muram_lock, flags);
-	return size;
 }
 EXPORT_SYMBOL(cpm_muram_free);
 
···
  * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram
  * @offset: offset of allocation start address
  * @size: number of bytes to allocate
- * This function returns an offset into the muram area
+ * This function returns @offset if the area was available, a negative
+ * errno otherwise.
  * Use cpm_dpram_addr() to get the virtual address of the area.
  * Use cpm_muram_free() to free the allocation.
  */
-unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size)
+s32 cpm_muram_alloc_fixed(unsigned long offset, unsigned long size)
 {
-	unsigned long start;
+	s32 start;
 	unsigned long flags;
 	struct genpool_data_fixed muram_pool_data_fixed;
 

drivers/soc/fsl/qe/qe_ic.c

···
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/errno.h>
+#include <linux/irq.h>
 #include <linux/reboot.h>
 #include <linux/slab.h>
 #include <linux/stddef.h>
···
 #include <linux/spinlock.h>
 #include <asm/irq.h>
 #include <asm/io.h>
-#include <soc/fsl/qe/qe_ic.h>
+#include <soc/fsl/qe/qe.h>
 
-#include "qe_ic.h"
+#define NR_QE_IC_INTS		64
+
+/* QE IC registers offset */
+#define QEIC_CICR		0x00
+#define QEIC_CIVEC		0x04
+#define QEIC_CIPXCC		0x10
+#define QEIC_CIPYCC		0x14
+#define QEIC_CIPWCC		0x18
+#define QEIC_CIPZCC		0x1c
+#define QEIC_CIMR		0x20
+#define QEIC_CRIMR		0x24
+#define QEIC_CIPRTA		0x30
+#define QEIC_CIPRTB		0x34
+#define QEIC_CHIVEC		0x60
+
+struct qe_ic {
+	/* Control registers offset */
+	u32 __iomem *regs;
+
+	/* The remapper for this QEIC */
+	struct irq_domain *irqhost;
+
+	/* The "linux" controller struct */
+	struct irq_chip hc_irq;
+
+	/* VIRQ numbers of QE high/low irqs */
+	unsigned int virq_high;
+	unsigned int virq_low;
+};
+
+/*
+ * QE interrupt controller internal structure
+ */
+struct qe_ic_info {
+	/* Location of this source at the QIMR register */
+	u32	mask;
+
+	/* Mask register offset */
+	u32	mask_reg;
+
+	/*
+	 * For grouped interrupts sources - the interrupt code as
+	 * appears at the group priority register
+	 */
+	u8	pri_code;
+
+	/* Group priority register offset */
+	u32	pri_reg;
+};
 
 static DEFINE_RAW_SPINLOCK(qe_ic_lock);
 
···
 		},
 };
 
-static inline u32 qe_ic_read(volatile __be32  __iomem * base, unsigned int reg)
+static inline u32 qe_ic_read(__be32  __iomem *base, unsigned int reg)
 {
-	return in_be32(base + (reg >> 2));
+	return qe_ioread32be(base + (reg >> 2));
 }
 
-static inline void qe_ic_write(volatile __be32  __iomem * base, unsigned int reg,
+static inline void qe_ic_write(__be32  __iomem *base, unsigned int reg,
 			       u32 value)
 {
-	out_be32(base + (reg >> 2), value);
+	qe_iowrite32be(value, base + (reg >> 2));
 }
 
 static inline struct qe_ic *qe_ic_from_irq(unsigned int virq)
···
 	.xlate = irq_domain_xlate_onetwocell,
 };
 
-/* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic)
+/* Return an interrupt vector or 0 if no interrupt is pending. */
+static unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic)
 {
 	int irq;
 
···
 	irq = qe_ic_read(qe_ic->regs, QEIC_CIVEC) >> 26;
 
 	if (irq == 0)
-		return NO_IRQ;
+		return 0;
 
 	return irq_linear_revmap(qe_ic->irqhost, irq);
 }
 
-/* Return an interrupt vector or NO_IRQ if no interrupt is pending. */
-unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
+/* Return an interrupt vector or 0 if no interrupt is pending. */
+static unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
 {
 	int irq;
 
···
 	irq = qe_ic_read(qe_ic->regs, QEIC_CHIVEC) >> 26;
 
 	if (irq == 0)
-		return NO_IRQ;
+		return 0;
 
 	return irq_linear_revmap(qe_ic->irqhost, irq);
 }
 
-void __init qe_ic_init(struct device_node *node, unsigned int flags,
-		       void (*low_handler)(struct irq_desc *desc),
-		       void (*high_handler)(struct irq_desc *desc))
+static void qe_ic_cascade_low(struct irq_desc *desc)
 {
+	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
+	unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+
+	if (cascade_irq != 0)
+		generic_handle_irq(cascade_irq);
+
+	if (chip->irq_eoi)
+		chip->irq_eoi(&desc->irq_data);
+}
+
+static void qe_ic_cascade_high(struct irq_desc *desc)
+{
+	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
+	unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+
+	if (cascade_irq != 0)
+		generic_handle_irq(cascade_irq);
+
+	if (chip->irq_eoi)
+		chip->irq_eoi(&desc->irq_data);
+}
+
+static void qe_ic_cascade_muxed_mpic(struct irq_desc *desc)
+{
+	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
+	unsigned int cascade_irq;
+	struct irq_chip *chip = irq_desc_get_chip(desc);
+
+	cascade_irq = qe_ic_get_high_irq(qe_ic);
+	if (cascade_irq == 0)
+		cascade_irq = qe_ic_get_low_irq(qe_ic);
+
+	if (cascade_irq != 0)
+		generic_handle_irq(cascade_irq);
+
+	chip->irq_eoi(&desc->irq_data);
+}
+
+static void __init qe_ic_init(struct device_node *node)
+{
+	void (*low_handler)(struct irq_desc *desc);
+	void (*high_handler)(struct irq_desc *desc);
 	struct qe_ic *qe_ic;
 	struct resource res;
-	u32 temp = 0, ret, high_active = 0;
+	u32 ret;
 
 	ret = of_address_to_resource(node, 0, &res);
 	if (ret)
···
 	qe_ic->virq_high = irq_of_parse_and_map(node, 0);
 	qe_ic->virq_low = irq_of_parse_and_map(node, 1);
 
-	if (qe_ic->virq_low == NO_IRQ) {
+	if (!qe_ic->virq_low) {
 		printk(KERN_ERR "Failed to map QE_IC low IRQ\n");
 		kfree(qe_ic);
 		return;
 	}
-
-	/* default priority scheme is grouped. If spread mode is    */
-	/* required, configure cicr accordingly.                    */
-	if (flags & QE_IC_SPREADMODE_GRP_W)
-		temp |= CICR_GWCC;
-	if (flags & QE_IC_SPREADMODE_GRP_X)
-		temp |= CICR_GXCC;
-	if (flags & QE_IC_SPREADMODE_GRP_Y)
-		temp |= CICR_GYCC;
-	if (flags & QE_IC_SPREADMODE_GRP_Z)
-		temp |= CICR_GZCC;
-	if (flags & QE_IC_SPREADMODE_GRP_RISCA)
-		temp |= CICR_GRTA;
-	if (flags & QE_IC_SPREADMODE_GRP_RISCB)
-		temp |= CICR_GRTB;
-
-	/* choose destination signal for highest priority interrupt */
-	if (flags & QE_IC_HIGH_SIGNAL) {
-		temp |= (SIGNAL_HIGH << CICR_HPIT_SHIFT);
-		high_active = 1;
+	if (qe_ic->virq_high != qe_ic->virq_low) {
+		low_handler = qe_ic_cascade_low;
+		high_handler = qe_ic_cascade_high;
+	} else {
+		low_handler = qe_ic_cascade_muxed_mpic;
+		high_handler = NULL;
 	}
 
-	qe_ic_write(qe_ic->regs, QEIC_CICR, temp);
+	qe_ic_write(qe_ic->regs, QEIC_CICR, 0);
 
 	irq_set_handler_data(qe_ic->virq_low, qe_ic);
 	irq_set_chained_handler(qe_ic->virq_low, low_handler);
 
-	if (qe_ic->virq_high != NO_IRQ &&
-			qe_ic->virq_high != qe_ic->virq_low) {
+	if (qe_ic->virq_high && qe_ic->virq_high != qe_ic->virq_low) {
 		irq_set_handler_data(qe_ic->virq_high, qe_ic);
 		irq_set_chained_handler(qe_ic->virq_high, high_handler);
 	}
 }
 
-void qe_ic_set_highest_priority(unsigned int virq, int high)
+static int __init qe_ic_of_init(void)
 {
-	struct qe_ic *qe_ic = qe_ic_from_irq(virq);
-	unsigned int src = virq_to_hw(virq);
-	u32 temp = 0;
+	struct device_node *np;
 
-	temp = qe_ic_read(qe_ic->regs, QEIC_CICR);
-
-	temp &= ~CICR_HP_MASK;
-	temp |= src << CICR_HP_SHIFT;
-
-	temp &= ~CICR_HPIT_MASK;
-	temp |= (high ? SIGNAL_HIGH : SIGNAL_LOW) << CICR_HPIT_SHIFT;
-
-	qe_ic_write(qe_ic->regs, QEIC_CICR, temp);
-}
-
-/* Set Priority level within its group, from 1 to 8 */
-int qe_ic_set_priority(unsigned int virq, unsigned int priority)
-{
-	struct qe_ic *qe_ic = qe_ic_from_irq(virq);
-	unsigned int src = virq_to_hw(virq);
-	u32 temp;
-
-	if (priority > 8 || priority == 0)
-		return -EINVAL;
-	if (WARN_ONCE(src >= ARRAY_SIZE(qe_ic_info),
-		      "%s: Invalid hw irq number for QEIC\n", __func__))
-		return -EINVAL;
-	if (qe_ic_info[src].pri_reg == 0)
-		return -EINVAL;
-
-	temp = qe_ic_read(qe_ic->regs, qe_ic_info[src].pri_reg);
-
-	if (priority < 4) {
-		temp &= ~(0x7 << (32 - priority * 3));
-		temp |= qe_ic_info[src].pri_code << (32 - priority * 3);
-	} else {
-		temp &= ~(0x7 << (24 - priority * 3));
-		temp |= qe_ic_info[src].pri_code << (24 - priority * 3);
+	np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
+	if (!np) {
+		np = of_find_node_by_type(NULL, "qeic");
+		if (!np)
+			return -ENODEV;
 	}
-
-	qe_ic_write(qe_ic->regs, qe_ic_info[src].pri_reg, temp);
-
+	qe_ic_init(np);
+	of_node_put(np);
 	return 0;
 }
-
-/* Set a QE priority to use high irq, only priority 1~2 can use high irq */
-int qe_ic_set_high_priority(unsigned int virq, unsigned int priority, int high)
-{
-	struct qe_ic *qe_ic = qe_ic_from_irq(virq);
-	unsigned int src = virq_to_hw(virq);
-	u32 temp, control_reg = QEIC_CICNR, shift = 0;
-
-	if (priority > 2 || priority == 0)
-		return -EINVAL;
-	if (WARN_ONCE(src >= ARRAY_SIZE(qe_ic_info),
-		      "%s: Invalid hw irq number for QEIC\n", __func__))
-		return -EINVAL;
-
-	switch (qe_ic_info[src].pri_reg) {
-	case QEIC_CIPZCC:
-		shift = CICNR_ZCC1T_SHIFT;
-		break;
-	case QEIC_CIPWCC:
-		shift = CICNR_WCC1T_SHIFT;
-		break;
-	case QEIC_CIPYCC:
-		shift = CICNR_YCC1T_SHIFT;
-		break;
-	case QEIC_CIPXCC:
-		shift = CICNR_XCC1T_SHIFT;
-		break;
-	case QEIC_CIPRTA:
-		shift = CRICR_RTA1T_SHIFT;
-		control_reg = QEIC_CRICR;
-		break;
-	case QEIC_CIPRTB:
-		shift = CRICR_RTB1T_SHIFT;
-		control_reg = QEIC_CRICR;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	shift += (2 - priority) * 2;
-	temp = qe_ic_read(qe_ic->regs, control_reg);
-	temp &= ~(SIGNAL_MASK << shift);
-	temp |= (high ? SIGNAL_HIGH : SIGNAL_LOW) << shift;
-	qe_ic_write(qe_ic->regs, control_reg, temp);
-
-	return 0;
-}
-
-static struct bus_type qe_ic_subsys = {
-	.name = "qe_ic",
-	.dev_name = "qe_ic",
-};
-
-static struct device device_qe_ic = {
-	.id = 0,
-	.bus = &qe_ic_subsys,
-};
-
-static int __init init_qe_ic_sysfs(void)
-{
-	int rc;
-
-	printk(KERN_DEBUG "Registering qe_ic with sysfs...\n");
-
-	rc = subsys_system_register(&qe_ic_subsys, NULL);
-	if (rc) {
-		printk(KERN_ERR "Failed registering qe_ic sys class\n");
-		return -ENODEV;
-	}
-	rc = device_register(&device_qe_ic);
-	if (rc) {
-		printk(KERN_ERR "Failed registering qe_ic sys device\n");
-		return -ENODEV;
-	}
-	return 0;
-}
-
-subsys_initcall(init_qe_ic_sysfs);
+subsys_initcall(qe_ic_of_init);

drivers/soc/fsl/qe/qe_ic.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * drivers/soc/fsl/qe/qe_ic.h
- *
- * QUICC ENGINE Interrupt Controller Header
- *
- * Copyright (C) 2006 Freescale Semiconductor, Inc. All rights reserved.
- *
- * Author: Li Yang <[e-mail]>
- * Based on code from Shlomi Gridish <[e-mail]>
- */
-#ifndef _POWERPC_SYSDEV_QE_IC_H
-#define _POWERPC_SYSDEV_QE_IC_H
-
-#include <soc/fsl/qe/qe_ic.h>
-
-#define NR_QE_IC_INTS		64
-
-/* QE IC registers offset */
-#define QEIC_CICR		0x00
-#define QEIC_CIVEC		0x04
-#define QEIC_CRIPNR		0x08
-#define QEIC_CIPNR		0x0c
-#define QEIC_CIPXCC		0x10
-#define QEIC_CIPYCC		0x14
-#define QEIC_CIPWCC		0x18
-#define QEIC_CIPZCC		0x1c
-#define QEIC_CIMR		0x20
-#define QEIC_CRIMR		0x24
-#define QEIC_CICNR		0x28
-#define QEIC_CIPRTA		0x30
-#define QEIC_CIPRTB		0x34
-#define QEIC_CRICR		0x3c
-#define QEIC_CHIVEC		0x60
-
-/* Interrupt priority registers */
-#define CIPCC_SHIFT_PRI0	29
-#define CIPCC_SHIFT_PRI1	26
-#define CIPCC_SHIFT_PRI2	23
-#define CIPCC_SHIFT_PRI3	20
-#define CIPCC_SHIFT_PRI4	13
-#define CIPCC_SHIFT_PRI5	10
-#define CIPCC_SHIFT_PRI6	7
-#define CIPCC_SHIFT_PRI7	4
-
-/* CICR priority modes */
-#define CICR_GWCC		0x00040000
-#define CICR_GXCC		0x00020000
-#define CICR_GYCC		0x00010000
-#define CICR_GZCC		0x00080000
-#define CICR_GRTA		0x00200000
-#define CICR_GRTB		0x00400000
-#define CICR_HPIT_SHIFT		8
-#define CICR_HPIT_MASK		0x00000300
-#define CICR_HP_SHIFT		24
-#define CICR_HP_MASK		0x3f000000
-
-/* CICNR */
-#define CICNR_WCC1T_SHIFT	20
-#define CICNR_ZCC1T_SHIFT	28
-#define CICNR_YCC1T_SHIFT	12
-#define CICNR_XCC1T_SHIFT	4
-
-/* CRICR */
-#define CRICR_RTA1T_SHIFT	20
-#define CRICR_RTB1T_SHIFT	28
-
-/* Signal indicator */
-#define SIGNAL_MASK		3
-#define SIGNAL_HIGH		2
-#define SIGNAL_LOW		0
-
-struct qe_ic {
-	/* Control registers offset */
-	volatile u32 __iomem *regs;
-
-	/* The remapper for this QEIC */
-	struct irq_domain *irqhost;
-
-	/* The "linux" controller struct */
-	struct irq_chip hc_irq;
-
-	/* VIRQ numbers of QE high/low irqs */
-	unsigned int virq_high;
-	unsigned int virq_low;
-};
-
-/*
- * QE interrupt controller internal structure
- */
-struct qe_ic_info {
-	u32	mask;	  /* location of this source at the QIMR register. */
-	u32	mask_reg; /* Mask register offset */
-	u8	pri_code; /* for grouped interrupts sources - the interrupt
-			     code as appears at the group priority register */
-	u32	pri_reg;  /* Group priority register offset */
-};
-
-#endif /* _POWERPC_SYSDEV_QE_IC_H */

drivers/soc/fsl/qe/qe_io.c

···
 
 #include <asm/io.h>
 #include <soc/fsl/qe/qe.h>
-#include <asm/prom.h>
-#include <sysdev/fsl_soc.h>
 
 #undef DEBUG
 
···
 {
 	struct resource res;
 	int ret;
-	const u32 *num_ports;
+	u32 num_ports;
 
 	/* Map Parallel I/O ports registers */
 	ret = of_address_to_resource(np, 0, &res);
···
 		return ret;
 	par_io = ioremap(res.start, resource_size(&res));
 
-	num_ports = of_get_property(np, "num-ports", NULL);
-	if (num_ports)
-		num_par_io_ports = *num_ports;
+	if (!of_property_read_u32(np, "num-ports", &num_ports))
+		num_par_io_ports = num_ports;
 
 	return 0;
 }
···
 	pin_mask1bit = (u32) (1 << (QE_PIO_PINS - (pin + 1)));
 
 	/* Set open drain, if required */
-	tmp_val = in_be32(&par_io->cpodr);
+	tmp_val = qe_ioread32be(&par_io->cpodr);
 	if (open_drain)
-		out_be32(&par_io->cpodr, pin_mask1bit | tmp_val);
+		qe_iowrite32be(pin_mask1bit | tmp_val, &par_io->cpodr);
 	else
-		out_be32(&par_io->cpodr, ~pin_mask1bit & tmp_val);
+		qe_iowrite32be(~pin_mask1bit & tmp_val, &par_io->cpodr);
 
 	/* define direction */
 	tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ?
-		in_be32(&par_io->cpdir2) :
-		in_be32(&par_io->cpdir1);
+		qe_ioread32be(&par_io->cpdir2) :
+		qe_ioread32be(&par_io->cpdir1);
 
 	/* get all bits mask for 2 bit per port */
 	pin_mask2bits = (u32) (0x3 << (QE_PIO_PINS -
···
 
 	/* clear and set 2 bits mask */
 	if (pin > (QE_PIO_PINS / 2) - 1) {
-		out_be32(&par_io->cpdir2,
-			 ~pin_mask2bits & tmp_val);
+		qe_iowrite32be(~pin_mask2bits & tmp_val, &par_io->cpdir2);
 		tmp_val &= ~pin_mask2bits;
-		out_be32(&par_io->cpdir2, new_mask2bits | tmp_val);
+		qe_iowrite32be(new_mask2bits | tmp_val, &par_io->cpdir2);
 	} else {
-		out_be32(&par_io->cpdir1,
-			 ~pin_mask2bits & tmp_val);
+		qe_iowrite32be(~pin_mask2bits & tmp_val, &par_io->cpdir1);
 		tmp_val &= ~pin_mask2bits;
-		out_be32(&par_io->cpdir1, new_mask2bits | tmp_val);
+		qe_iowrite32be(new_mask2bits | tmp_val, &par_io->cpdir1);
 	}
 	/* define pin assignment */
 	tmp_val = (pin > (QE_PIO_PINS / 2) - 1) ?
-		in_be32(&par_io->cppar2) :
-		in_be32(&par_io->cppar1);
+		qe_ioread32be(&par_io->cppar2) :
+		qe_ioread32be(&par_io->cppar1);
 
 	new_mask2bits = (u32) (assignment << (QE_PIO_PINS -
 			(pin % (QE_PIO_PINS / 2) + 1) * 2));
 	/* clear and set 2 bits mask */
 	if (pin > (QE_PIO_PINS / 2) - 1) {
-		out_be32(&par_io->cppar2,
-			 ~pin_mask2bits & tmp_val);
+		qe_iowrite32be(~pin_mask2bits & tmp_val, &par_io->cppar2);
 		tmp_val &= ~pin_mask2bits;
-		out_be32(&par_io->cppar2, new_mask2bits | tmp_val);
+		qe_iowrite32be(new_mask2bits | tmp_val, &par_io->cppar2);
 	} else {
-		out_be32(&par_io->cppar1,
-			 ~pin_mask2bits & tmp_val);
+		qe_iowrite32be(~pin_mask2bits & tmp_val, &par_io->cppar1);
 		tmp_val &= ~pin_mask2bits;
-		out_be32(&par_io->cppar1, new_mask2bits | tmp_val);
+		qe_iowrite32be(new_mask2bits | tmp_val, &par_io->cppar1);
 	}
 }
 EXPORT_SYMBOL(__par_io_config_pin);
···
 	/* calculate pin location */
 	pin_mask = (u32) (1 << (QE_PIO_PINS - 1 - pin));
 
-	tmp_val = in_be32(&par_io[port].cpdata);
+	tmp_val = qe_ioread32be(&par_io[port].cpdata);
 
 	if (val == 0)		/* clear */
-		out_be32(&par_io[port].cpdata, ~pin_mask & tmp_val);
+		qe_iowrite32be(~pin_mask & tmp_val, &par_io[port].cpdata);
 	else			/* set */
-		out_be32(&par_io[port].cpdata, pin_mask | tmp_val);
+		qe_iowrite32be(pin_mask | tmp_val, &par_io[port].cpdata);
 
 	return 0;
 }
···
 int par_io_of_config(struct device_node *np)
 {
 	struct device_node *pio;
-	const phandle *ph;
 	int pio_map_len;
-	const unsigned int *pio_map;
+	const __be32 *pio_map;
 
 	if (par_io == NULL) {
 		printk(KERN_ERR "par_io not initialized\n");
 		return -1;
 	}
 
-	ph = of_get_property(np, "pio-handle", NULL);
-	if (ph == NULL) {
+	pio = of_parse_phandle(np, "pio-handle", 0);
+	if (pio == NULL) {
 		printk(KERN_ERR "pio-handle not available\n");
 		return -1;
 	}
-
-	pio = of_find_node_by_phandle(*ph);
 
 	pio_map = of_get_property(pio, "pio-map", &pio_map_len);
 	if (pio_map == NULL) {
···
 	}
 
 	while (pio_map_len > 0) {
-		par_io_config_pin((u8) pio_map[0], (u8) pio_map[1],
-				(int) pio_map[2], (int) pio_map[3],
-				(int) pio_map[4], (int) pio_map[5]);
+		u8 port        = be32_to_cpu(pio_map[0]);
+		u8 pin         = be32_to_cpu(pio_map[1]);
+		int dir        = be32_to_cpu(pio_map[2]);
+		int open_drain = be32_to_cpu(pio_map[3]);
+		int assignment = be32_to_cpu(pio_map[4]);
+		int has_irq    = be32_to_cpu(pio_map[5]);
+
+		par_io_config_pin(port, pin, dir, open_drain,
+				  assignment, has_irq);
 		pio_map += 6;
 		pio_map_len -= 6;
 	}

drivers/soc/fsl/qe/qe_tdm.c

···
 				    &siram[siram_entry_id * 32 + 0x200 +  i]);
 	}
 
-	setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
-		  SIR_LAST);
-	setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
-		  SIR_LAST);
+	qe_setbits_be16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
+			SIR_LAST);
+	qe_setbits_be16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
+			SIR_LAST);
 
 	/* Set SIxMR register */
 	sixmr = SIMR_SAD(siram_entry_id);

drivers/soc/fsl/qe/ucc.c

···
 #include <linux/spinlock.h>
 #include <linux/export.h>
 
-#include <asm/irq.h>
 #include <asm/io.h>
 #include <soc/fsl/qe/immap_qe.h>
 #include <soc/fsl/qe/qe.h>
···
 		return -EINVAL;
 
 	spin_lock_irqsave(&cmxgcr_lock, flags);
-	clrsetbits_be32(&qe_immr->qmx.cmxgcr, QE_CMXGCR_MII_ENET_MNG,
-		ucc_num << QE_CMXGCR_MII_ENET_MNG_SHIFT);
+	qe_clrsetbits_be32(&qe_immr->qmx.cmxgcr, QE_CMXGCR_MII_ENET_MNG,
+			   ucc_num << QE_CMXGCR_MII_ENET_MNG_SHIFT);
 	spin_unlock_irqrestore(&cmxgcr_lock, flags);
 
 	return 0;
···
 		return -EINVAL;
 	}
 
-	clrsetbits_8(guemr, UCC_GUEMR_MODE_MASK,
-		UCC_GUEMR_SET_RESERVED3 | speed);
+	qe_clrsetbits_8(guemr, UCC_GUEMR_MODE_MASK,
+			UCC_GUEMR_SET_RESERVED3 | speed);
 
 	return 0;
 }
···
 	get_cmxucr_reg(ucc_num, &cmxucr, &reg_num, &shift);
 
 	if (set)
-		setbits32(cmxucr, mask << shift);
+		qe_setbits_be32(cmxucr, mask << shift);
 	else
-		clrbits32(cmxucr, mask << shift);
+		qe_clrbits_be32(cmxucr, mask << shift);
 
 	return 0;
 }
···
 	if (mode == COMM_DIR_RX)
 		shift += 4;
 
-	clrsetbits_be32(cmxucr, QE_CMXUCR_TX_CLK_SRC_MASK << shift,
-		clock_bits << shift);
+	qe_clrsetbits_be32(cmxucr, QE_CMXUCR_TX_CLK_SRC_MASK << shift,
+			   clock_bits << shift);
 
 	return 0;
 }
···
 	cmxs1cr = (tdm_num < 4) ? &qe_mux_reg->cmxsi1cr_l :
 				  &qe_mux_reg->cmxsi1cr_h;
 
-	qe_clrsetbits32(cmxs1cr, QE_CMXUCR_TX_CLK_SRC_MASK << shift,
-			clock_bits << shift);
+	qe_clrsetbits_be32(cmxs1cr, QE_CMXUCR_TX_CLK_SRC_MASK << shift,
+			   clock_bits << shift);
 
 	return 0;
 }
···
 
 	shift = ucc_get_tdm_sync_shift(mode, tdm_num);
 
-	qe_clrsetbits32(&qe_mux_reg->cmxsi1syr,
-			QE_CMXUCR_TX_CLK_SRC_MASK << shift,
-			source << shift);
+	qe_clrsetbits_be32(&qe_mux_reg->cmxsi1syr,
+			   QE_CMXUCR_TX_CLK_SRC_MASK << shift,
+			   source << shift);
 
 	return 0;
 }

drivers/soc/fsl/qe/ucc_fast.c

···
 	printk(KERN_INFO "Base address: 0x%p\n", uccf->uf_regs);
 
 	printk(KERN_INFO "gumr  : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->gumr, in_be32(&uccf->uf_regs->gumr));
+		  &uccf->uf_regs->gumr, qe_ioread32be(&uccf->uf_regs->gumr));
 	printk(KERN_INFO "upsmr : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->upsmr, in_be32(&uccf->uf_regs->upsmr));
+		  &uccf->uf_regs->upsmr, qe_ioread32be(&uccf->uf_regs->upsmr));
 	printk(KERN_INFO "utodr : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->utodr, in_be16(&uccf->uf_regs->utodr));
+		  &uccf->uf_regs->utodr, qe_ioread16be(&uccf->uf_regs->utodr));
 	printk(KERN_INFO "udsr  : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->udsr, in_be16(&uccf->uf_regs->udsr));
+		  &uccf->uf_regs->udsr, qe_ioread16be(&uccf->uf_regs->udsr));
 	printk(KERN_INFO "ucce  : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->ucce, in_be32(&uccf->uf_regs->ucce));
+		  &uccf->uf_regs->ucce, qe_ioread32be(&uccf->uf_regs->ucce));
 	printk(KERN_INFO "uccm  : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->uccm, in_be32(&uccf->uf_regs->uccm));
+		  &uccf->uf_regs->uccm, qe_ioread32be(&uccf->uf_regs->uccm));
 	printk(KERN_INFO "uccs  : addr=0x%p, val=0x%02x\n",
-		  &uccf->uf_regs->uccs, in_8(&uccf->uf_regs->uccs));
+		  &uccf->uf_regs->uccs, qe_ioread8(&uccf->uf_regs->uccs));
 	printk(KERN_INFO "urfb  : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->urfb, in_be32(&uccf->uf_regs->urfb));
+		  &uccf->uf_regs->urfb, qe_ioread32be(&uccf->uf_regs->urfb));
 	printk(KERN_INFO "urfs  : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->urfs, in_be16(&uccf->uf_regs->urfs));
+		  &uccf->uf_regs->urfs, qe_ioread16be(&uccf->uf_regs->urfs));
 	printk(KERN_INFO "urfet : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->urfet, in_be16(&uccf->uf_regs->urfet));
+		  &uccf->uf_regs->urfet, qe_ioread16be(&uccf->uf_regs->urfet));
 	printk(KERN_INFO "urfset: addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->urfset, in_be16(&uccf->uf_regs->urfset));
+		  &uccf->uf_regs->urfset,
+		  qe_ioread16be(&uccf->uf_regs->urfset));
 	printk(KERN_INFO "utfb  : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->utfb, in_be32(&uccf->uf_regs->utfb));
+		  &uccf->uf_regs->utfb, qe_ioread32be(&uccf->uf_regs->utfb));
 	printk(KERN_INFO "utfs  : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->utfs, in_be16(&uccf->uf_regs->utfs));
+		  &uccf->uf_regs->utfs, qe_ioread16be(&uccf->uf_regs->utfs));
 	printk(KERN_INFO "utfet : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->utfet, in_be16(&uccf->uf_regs->utfet));
+		  &uccf->uf_regs->utfet, qe_ioread16be(&uccf->uf_regs->utfet));
 	printk(KERN_INFO "utftt : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->utftt, in_be16(&uccf->uf_regs->utftt));
+		  &uccf->uf_regs->utftt, qe_ioread16be(&uccf->uf_regs->utftt));
 	printk(KERN_INFO "utpt  : addr=0x%p, val=0x%04x\n",
-		  &uccf->uf_regs->utpt, in_be16(&uccf->uf_regs->utpt));
+		  &uccf->uf_regs->utpt, qe_ioread16be(&uccf->uf_regs->utpt));
 	printk(KERN_INFO "urtry : addr=0x%p, val=0x%08x\n",
-		  &uccf->uf_regs->urtry, in_be32(&uccf->uf_regs->urtry));
+		  &uccf->uf_regs->urtry, qe_ioread32be(&uccf->uf_regs->urtry));
 	printk(KERN_INFO "guemr : addr=0x%p, val=0x%02x\n",
-		  &uccf->uf_regs->guemr, in_8(&uccf->uf_regs->guemr));
+		  &uccf->uf_regs->guemr, qe_ioread8(&uccf->uf_regs->guemr));
 }
 EXPORT_SYMBOL(ucc_fast_dump_regs);
 
···
 
 void ucc_fast_transmit_on_demand(struct ucc_fast_private * uccf)
 {
-	out_be16(&uccf->uf_regs->utodr, UCC_FAST_TOD);
+	qe_iowrite16be(UCC_FAST_TOD, &uccf->uf_regs->utodr);
 }
 EXPORT_SYMBOL(ucc_fast_transmit_on_demand);
 
···
 	uf_regs = uccf->uf_regs;
 
 	/* Enable reception and/or transmission on this UCC. */
-	gumr = in_be32(&uf_regs->gumr);
+	gumr = qe_ioread32be(&uf_regs->gumr);
 	if (mode & COMM_DIR_TX) {
 		gumr |= UCC_FAST_GUMR_ENT;
 		uccf->enabled_tx = 1;
···
 		gumr |= UCC_FAST_GUMR_ENR;
 		uccf->enabled_rx = 1;
 	}
-	out_be32(&uf_regs->gumr, gumr);
+	qe_iowrite32be(gumr, &uf_regs->gumr);
 }
 EXPORT_SYMBOL(ucc_fast_enable);
 
···
 	uf_regs = uccf->uf_regs;
 
 	/* Disable reception and/or transmission on this UCC. */
-	gumr = in_be32(&uf_regs->gumr);
+	gumr = qe_ioread32be(&uf_regs->gumr);
 	if (mode & COMM_DIR_TX) {
 		gumr &= ~UCC_FAST_GUMR_ENT;
 		uccf->enabled_tx = 0;
···
 		gumr &= ~UCC_FAST_GUMR_ENR;
 		uccf->enabled_rx = 0;
 	}
-	out_be32(&uf_regs->gumr, gumr);
+	qe_iowrite32be(gumr, &uf_regs->gumr);
 }
 EXPORT_SYMBOL(ucc_fast_disable);
 
···
 			__func__);
 		return -ENOMEM;
 	}
+	uccf->ucc_fast_tx_virtual_fifo_base_offset = -1;
+	uccf->ucc_fast_rx_virtual_fifo_base_offset = -1;
 
 	/* Fill fast UCC structure */
 	uccf->uf_info = uf_info;
···
 	gumr |= uf_info->tenc;
 	gumr |= uf_info->tcrc;
 	gumr |= uf_info->mode;
-	out_be32(&uf_regs->gumr, gumr);
+	qe_iowrite32be(gumr, &uf_regs->gumr);
 
 	/* Allocate memory for Tx Virtual Fifo */
 	uccf->ucc_fast_tx_virtual_fifo_base_offset =
 	    qe_muram_alloc(uf_info->utfs, UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
-	if (IS_ERR_VALUE(uccf->ucc_fast_tx_virtual_fifo_base_offset)) {
+	if (uccf->ucc_fast_tx_virtual_fifo_base_offset < 0) {
 		printk(KERN_ERR "%s: cannot allocate MURAM for TX FIFO\n",
 			__func__);
-		uccf->ucc_fast_tx_virtual_fifo_base_offset = 0;
 		ucc_fast_free(uccf);
 		return -ENOMEM;
 	}
···
 		qe_muram_alloc(uf_info->urfs +
 			   UCC_FAST_RECEIVE_VIRTUAL_FIFO_SIZE_FUDGE_FACTOR,
 			   UCC_FAST_VIRT_FIFO_REGS_ALIGNMENT);
-	if (IS_ERR_VALUE(uccf->ucc_fast_rx_virtual_fifo_base_offset)) {
+	if (uccf->ucc_fast_rx_virtual_fifo_base_offset < 0) {
 		printk(KERN_ERR "%s: cannot allocate MURAM for RX FIFO\n",
 			__func__);
-		uccf->ucc_fast_rx_virtual_fifo_base_offset = 0;
 		ucc_fast_free(uccf);
 		return -ENOMEM;
 	}
 
 	/* Set Virtual Fifo registers */
-	out_be16(&uf_regs->urfs, uf_info->urfs);
-	out_be16(&uf_regs->urfet, uf_info->urfet);
-	out_be16(&uf_regs->urfset, uf_info->urfset);
-	out_be16(&uf_regs->utfs, uf_info->utfs);
-	out_be16(&uf_regs->utfet, uf_info->utfet);
-	out_be16(&uf_regs->utftt, uf_info->utftt);
+	qe_iowrite16be(uf_info->urfs, &uf_regs->urfs);
+	qe_iowrite16be(uf_info->urfet, &uf_regs->urfet);
+	qe_iowrite16be(uf_info->urfset, &uf_regs->urfset);
+	qe_iowrite16be(uf_info->utfs, &uf_regs->utfs);
+	qe_iowrite16be(uf_info->utfet, &uf_regs->utfet);
+	qe_iowrite16be(uf_info->utftt, &uf_regs->utftt);
 	/* utfb, urfb are offsets from MURAM base */
-	out_be32(&uf_regs->utfb, uccf->ucc_fast_tx_virtual_fifo_base_offset);
-	out_be32(&uf_regs->urfb, uccf->ucc_fast_rx_virtual_fifo_base_offset);
+	qe_iowrite32be(uccf->ucc_fast_tx_virtual_fifo_base_offset,
+		       &uf_regs->utfb);
+	qe_iowrite32be(uccf->ucc_fast_rx_virtual_fifo_base_offset,
+		       &uf_regs->urfb);
 
 	/* Mux clocking */
 	/* Grant Support */
···
 	}
 
 	/* Set interrupt mask register at UCC level. */
-	out_be32(&uf_regs->uccm, uf_info->uccm_mask);
+	qe_iowrite32be(uf_info->uccm_mask, &uf_regs->uccm);
 
 	/* First, clear anything pending at UCC level,
 	 * otherwise, old garbage may come through
 	 * as soon as the dam is opened. */
 
 	/* Writing '1' clears */
-	out_be32(&uf_regs->ucce, 0xffffffff);
+	qe_iowrite32be(0xffffffff, &uf_regs->ucce);
 
 	*uccf_ret = uccf;
 	return 0;
···
 	if (!uccf)
 		return;
 
-	if (uccf->ucc_fast_tx_virtual_fifo_base_offset)
-		qe_muram_free(uccf->ucc_fast_tx_virtual_fifo_base_offset);
-
-	if (uccf->ucc_fast_rx_virtual_fifo_base_offset)
-		qe_muram_free(uccf->ucc_fast_rx_virtual_fifo_base_offset);
+	qe_muram_free(uccf->ucc_fast_tx_virtual_fifo_base_offset);
+	qe_muram_free(uccf->ucc_fast_rx_virtual_fifo_base_offset);
 
 	if (uccf->uf_regs)
 		iounmap(uccf->uf_regs);

drivers/soc/fsl/qe/ucc_slow.c

···
 	us_regs = uccs->us_regs;
 
 	/* Enable reception and/or transmission on this UCC. */
-	gumr_l = in_be32(&us_regs->gumr_l);
+	gumr_l = qe_ioread32be(&us_regs->gumr_l);
 	if (mode & COMM_DIR_TX) {
 		gumr_l |= UCC_SLOW_GUMR_L_ENT;
 		uccs->enabled_tx = 1;
···
 		gumr_l |= UCC_SLOW_GUMR_L_ENR;
 		uccs->enabled_rx = 1;
 	}
-	out_be32(&us_regs->gumr_l, gumr_l);
+	qe_iowrite32be(gumr_l, &us_regs->gumr_l);
 }
 EXPORT_SYMBOL(ucc_slow_enable);
 
···
 	us_regs = uccs->us_regs;
 
 	/* Disable reception and/or transmission on this UCC. */
-	gumr_l = in_be32(&us_regs->gumr_l);
+	gumr_l = qe_ioread32be(&us_regs->gumr_l);
 	if (mode & COMM_DIR_TX) {
 		gumr_l &= ~UCC_SLOW_GUMR_L_ENT;
 		uccs->enabled_tx = 0;
···
 		gumr_l &= ~UCC_SLOW_GUMR_L_ENR;
 		uccs->enabled_rx = 0;
 	}
-	out_be32(&us_regs->gumr_l, gumr_l);
+	qe_iowrite32be(gumr_l, &us_regs->gumr_l);
 }
 EXPORT_SYMBOL(ucc_slow_disable);
 
···
 			__func__);
 		return -ENOMEM;
 	}
+	uccs->rx_base_offset = -1;
+	uccs->tx_base_offset = -1;
+	uccs->us_pram_offset = -1;
 
 	/* Fill slow UCC structure */
 	uccs->us_info = us_info;
···
 	/* Get PRAM base */
 	uccs->us_pram_offset =
 		qe_muram_alloc(UCC_SLOW_PRAM_SIZE, ALIGNMENT_OF_UCC_SLOW_PRAM);
-	if (IS_ERR_VALUE(uccs->us_pram_offset)) {
+	if (uccs->us_pram_offset < 0) {
 		printk(KERN_ERR "%s: cannot allocate MURAM for PRAM", __func__);
 		ucc_slow_free(uccs);
 		return -ENOMEM;
···
 		return ret;
 	}
 
-	out_be16(&uccs->us_pram->mrblr, us_info->max_rx_buf_length);
+	qe_iowrite16be(us_info->max_rx_buf_length, &uccs->us_pram->mrblr);
 
 	INIT_LIST_HEAD(&uccs->confQ);
 
···
 	uccs->rx_base_offset =
 		qe_muram_alloc(us_info->rx_bd_ring_len * sizeof(struct qe_bd),
 				QE_ALIGNMENT_OF_BD);
-	if (IS_ERR_VALUE(uccs->rx_base_offset)) {
+	if (uccs->rx_base_offset < 0) {
 		printk(KERN_ERR "%s: cannot allocate %u RX BDs\n", __func__,
 			us_info->rx_bd_ring_len);
-		uccs->rx_base_offset = 0;
 		ucc_slow_free(uccs);
 		return -ENOMEM;
 	}
···
 	uccs->tx_base_offset =
 		qe_muram_alloc(us_info->tx_bd_ring_len * sizeof(struct qe_bd),
 			QE_ALIGNMENT_OF_BD);
-	if (IS_ERR_VALUE(uccs->tx_base_offset)) {
+	if (uccs->tx_base_offset < 0) {
 		printk(KERN_ERR "%s: cannot allocate TX BDs", __func__);
-		uccs->tx_base_offset = 0;
 		ucc_slow_free(uccs);
 		return -ENOMEM;
 	}
···
 	bd = uccs->confBd = uccs->tx_bd = qe_muram_addr(uccs->tx_base_offset);
 	for (i = 0; i < us_info->tx_bd_ring_len - 1; i++) {
 		/* clear bd buffer */
-		out_be32(&bd->buf, 0);
+		qe_iowrite32be(0, &bd->buf);
 		/* set bd status and length */
-		out_be32((u32 *) bd, 0);
+		qe_iowrite32be(0, (u32 *)bd);
 		bd++;
 	}
 	/* for last BD set Wrap bit */
-	out_be32(&bd->buf, 0);
-	out_be32((u32 *) bd, cpu_to_be32(T_W));
+	qe_iowrite32be(0, &bd->buf);
+	qe_iowrite32be(cpu_to_be32(T_W), (u32 *)bd);
 
 	/* Init Rx bds */
 	bd = uccs->rx_bd = qe_muram_addr(uccs->rx_base_offset);
 	for (i = 0; i < us_info->rx_bd_ring_len - 1; i++) {
 		/* set bd status and length */
-		out_be32((u32*)bd, 0);
+		qe_iowrite32be(0, (u32 *)bd);
 		/* clear bd buffer */
-		out_be32(&bd->buf, 0);
+		qe_iowrite32be(0, &bd->buf);
 		bd++;
 	}
 	/* for last BD set Wrap bit */
-	out_be32((u32*)bd, cpu_to_be32(R_W));
-	out_be32(&bd->buf, 0);
+	qe_iowrite32be(cpu_to_be32(R_W), (u32 *)bd);
+	qe_iowrite32be(0, &bd->buf);
 
 	/* Set GUMR (For more details see the hardware spec.). */
 	/* gumr_h */
···
 		gumr |= UCC_SLOW_GUMR_H_TXSY;
 	if (us_info->rtsm)
 		gumr |= UCC_SLOW_GUMR_H_RTSM;
-	out_be32(&us_regs->gumr_h, gumr);
+	qe_iowrite32be(gumr, &us_regs->gumr_h);
 
 	/* gumr_l */
 	gumr = us_info->tdcr | us_info->rdcr | us_info->tenc | us_info->renc |
···
 		gumr |= UCC_SLOW_GUMR_L_TINV;
 	if (us_info->tend)
 		gumr |= UCC_SLOW_GUMR_L_TEND;
-	out_be32(&us_regs->gumr_l, gumr);
+	qe_iowrite32be(gumr, &us_regs->gumr_l);
 
 	/* Function code registers */
 
···
 	uccs->us_pram->rbmr = UCC_BMR_BO_BE;
 
 	/* rbase, tbase are offsets from MURAM base */
-	out_be16(&uccs->us_pram->rbase, uccs->rx_base_offset);
-	out_be16(&uccs->us_pram->tbase, uccs->tx_base_offset);
+	qe_iowrite16be(uccs->rx_base_offset, &uccs->us_pram->rbase);
+	qe_iowrite16be(uccs->tx_base_offset, &uccs->us_pram->tbase);
 
 	/* Mux clocking */
 	/* Grant Support */
···
 	}
 
 	/* Set interrupt mask register at UCC level. */
-	out_be16(&us_regs->uccm, us_info->uccm_mask);
+	qe_iowrite16be(us_info->uccm_mask, &us_regs->uccm);
 
 	/* First, clear anything pending at UCC level,
 	 * otherwise, old garbage may come through
 	 * as soon as the dam is opened. */
 
 	/* Writing '1' clears */
-	out_be16(&us_regs->ucce, 0xffff);
+	qe_iowrite16be(0xffff, &us_regs->ucce);
 
 	/* Issue QE Init command */
 	if (us_info->init_tx && us_info->init_rx)
···
 	if (!uccs)
 		return;
 
-	if (uccs->rx_base_offset)
-		qe_muram_free(uccs->rx_base_offset);
-
-	if (uccs->tx_base_offset)
-		qe_muram_free(uccs->tx_base_offset);
-
-	if (uccs->us_pram)
-		qe_muram_free(uccs->us_pram_offset);
+	qe_muram_free(uccs->rx_base_offset);
+	qe_muram_free(uccs->tx_base_offset);
+	qe_muram_free(uccs->us_pram_offset);
 
 	if (uccs->us_regs)
 		iounmap(uccs->us_regs);

drivers/soc/fsl/qe/usb.c

···
 
 	spin_lock_irqsave(&cmxgcr_lock, flags);
 
-	clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val);
+	qe_clrsetbits_be32(&mux->cmxgcr, QE_CMXGCR_USBCS, val);
 
 	spin_unlock_irqrestore(&cmxgcr_lock, flags);
 

drivers/soc/imx/Kconfig

···
 
 config IMX_SCU_SOC
 	bool "i.MX System Controller Unit SoC info support"
-	depends on IMX_SCU
+	depends on IMX_SCU || COMPILE_TEST
 	select SOC_BUS
 	help
 	  If you say yes here you get support for the NXP i.MX System

drivers/soc/imx/soc-imx8.c

···
 	.soc_revision = imx8mm_soc_revision,
 };
 
+static const struct imx8_soc_data imx8mp_soc_data = {
+	.name = "i.MX8MP",
+	.soc_revision = imx8mm_soc_revision,
+};
+
 static const struct of_device_id imx8_soc_match[] = {
 	{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
 	{ .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
 	{ .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
+	{ .compatible = "fsl,imx8mp", .data = &imx8mp_soc_data, },
 	{ }
 };
 
···
 		ret = PTR_ERR(soc_dev);
 		goto free_serial_number;
 	}
+
+	pr_info("SoC: %s revision %s\n", soc_dev_attr->soc_id,
+		soc_dev_attr->revision);
 
 	if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT))
 		platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0);

drivers/soc/mediatek/mtk-cmdq-helper.c

···
 #define CMDQ_WRITE_ENABLE_MASK	BIT(0)
 #define CMDQ_POLL_ENABLE_MASK	BIT(0)
 #define CMDQ_EOC_IRQ_EN		BIT(0)
-#define CMDQ_EOC_CMD		((u64)((CMDQ_CODE_EOC << CMDQ_OP_CODE_SHIFT)) \
-				<< 32 | CMDQ_EOC_IRQ_EN)
 
 struct cmdq_instruction {
 	union {

drivers/soc/qcom/Kconfig

···
 	  neighboring subsystems going up or down.
 
 config QCOM_GSBI
-        tristate "QCOM General Serial Bus Interface"
-        depends on ARCH_QCOM || COMPILE_TEST
-        select MFD_SYSCON
-        help
-          Say y here to enable GSBI support.  The GSBI provides control
-          functions for connecting the underlying serial UART, SPI, and I2C
-          devices to the output pins.
+	tristate "QCOM General Serial Bus Interface"
+	depends on ARCH_QCOM || COMPILE_TEST
+	select MFD_SYSCON
+	help
+	  Say y here to enable GSBI support.  The GSBI provides control
+	  functions for connecting the underlying serial UART, SPI, and I2C
+	  devices to the output pins.
 
 config QCOM_LLCC
 	tristate "Qualcomm Technologies, Inc. LLCC driver"
···
 	depends on ARCH_QCOM
 	select QCOM_SCM
 	help
-          The On Chip Memory (OCMEM) allocator allows various clients to
-          allocate memory from OCMEM based on performance, latency and power
-          requirements. This is typically used by the GPU, camera/video, and
-          audio components on some Snapdragon SoCs.
+	  The On Chip Memory (OCMEM) allocator allows various clients to
+	  allocate memory from OCMEM based on performance, latency and power
+	  requirements. This is typically used by the GPU, camera/video, and
+	  audio components on some Snapdragon SoCs.
 
 config QCOM_PM
 	bool "Qualcomm Power Management"
···
 	depends on ARCH_QCOM || COMPILE_TEST
 	depends on RPMSG
 	help
-          Enable APR IPC protocol support between
-          application processor and QDSP6. APR is
-          used by audio driver to configure QDSP6
-          ASM, ADM and AFE modules.
+	  Enable APR IPC protocol support between
+	  application processor and QDSP6. APR is
+	  used by audio driver to configure QDSP6
+	  ASM, ADM and AFE modules.
 endmenu

drivers/soc/qcom/qmi_interface.c

···
 
 	qmi->sock = qmi_sock_create(qmi, &qmi->sq);
 	if (IS_ERR(qmi->sock)) {
-		pr_err("failed to create QMI socket\n");
-		ret = PTR_ERR(qmi->sock);
+		if (PTR_ERR(qmi->sock) == -EAFNOSUPPORT) {
+			ret = -EPROBE_DEFER;
+		} else {
+			pr_err("failed to create QMI socket\n");
+			ret = PTR_ERR(qmi->sock);
+		}
 		goto err_destroy_wq;
 	}
 

drivers/soc/qcom/rpmhpd.c

···
 
 static struct rpmhpd sdm845_mx_ao = {
 	.pd = { .name = "mx_ao", },
+	.active_only = true,
 	.peer = &sdm845_mx,
 	.res_name = "mx.lvl",
 };
···
 
 static struct rpmhpd sdm845_cx_ao = {
 	.pd = { .name = "cx_ao", },
+	.active_only = true,
 	.peer = &sdm845_cx,
 	.parent = &sdm845_mx_ao.pd,
 	.res_name = "cx.lvl",
···
 	.num_pds = ARRAY_SIZE(sdm845_rpmhpds),
 };
 
+/* SM8150 RPMH powerdomains */
+
+static struct rpmhpd sm8150_mmcx_ao;
+static struct rpmhpd sm8150_mmcx = {
+	.pd = { .name = "mmcx", },
+	.peer = &sm8150_mmcx_ao,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd sm8150_mmcx_ao = {
+	.pd = { .name = "mmcx_ao", },
+	.active_only = true,
+	.peer = &sm8150_mmcx,
+	.res_name = "mmcx.lvl",
+};
+
+static struct rpmhpd *sm8150_rpmhpds[] = {
+	[SM8150_MSS] = &sdm845_mss,
+	[SM8150_EBI] = &sdm845_ebi,
+	[SM8150_LMX] = &sdm845_lmx,
+	[SM8150_LCX] = &sdm845_lcx,
+	[SM8150_GFX] = &sdm845_gfx,
+	[SM8150_MX] = &sdm845_mx,
+	[SM8150_MX_AO] = &sdm845_mx_ao,
+	[SM8150_CX] = &sdm845_cx,
+	[SM8150_CX_AO] = &sdm845_cx_ao,
+	[SM8150_MMCX] = &sm8150_mmcx,
+	[SM8150_MMCX_AO] = &sm8150_mmcx_ao,
+};
+
+static const struct rpmhpd_desc sm8150_desc = {
+	.rpmhpds = sm8150_rpmhpds,
+	.num_pds = ARRAY_SIZE(sm8150_rpmhpds),
+};
+
+/* SC7180 RPMH powerdomains */
+static struct rpmhpd *sc7180_rpmhpds[] = {
+	[SC7180_CX] = &sdm845_cx,
+	[SC7180_CX_AO] = &sdm845_cx_ao,
+	[SC7180_GFX] = &sdm845_gfx,
+	[SC7180_MX] = &sdm845_mx,
+	[SC7180_MX_AO] = &sdm845_mx_ao,
+	[SC7180_LMX] = &sdm845_lmx,
+	[SC7180_LCX] = &sdm845_lcx,
+	[SC7180_MSS] = &sdm845_mss,
+};
+
+static const struct rpmhpd_desc sc7180_desc = {
+	.rpmhpds = sc7180_rpmhpds,
+	.num_pds = ARRAY_SIZE(sc7180_rpmhpds),
+};
+
 static const struct of_device_id rpmhpd_match_table[] = {
+	{ .compatible = "qcom,sc7180-rpmhpd", .data = &sc7180_desc },
 	{ .compatible = "qcom,sdm845-rpmhpd", .data = &sdm845_desc },
+	{ .compatible = "qcom,sm8150-rpmhpd", .data = &sm8150_desc },
 	{ }
 };
 

drivers/soc/renesas/Kconfig

···
 	help
 	  This enables support for the Renesas RZ/G2E SoC.
 
+config ARCH_R8A77950
+	bool
+
+config ARCH_R8A77951
+	bool
+
 config ARCH_R8A7795
 	bool "Renesas R-Car H3 SoC Platform"
+	select ARCH_R8A77950
+	select ARCH_R8A77951
 	select ARCH_RCAR_GEN3
 	select SYSC_R8A7795
 	help
 	  This enables support for the Renesas R-Car H3 SoC.
 
 config ARCH_R8A77960
-	bool
+	bool "Renesas R-Car M3-W SoC Platform"
 	select ARCH_RCAR_GEN3
 	select SYSC_R8A77960
-
-config ARCH_R8A7796
-	bool "Renesas R-Car M3-W SoC Platform"
-	select ARCH_R8A77960
 	help
 	  This enables support for the Renesas R-Car M3-W SoC.
 

drivers/soc/renesas/rcar-rst.c

···
 
 struct rst_config {
 	unsigned int modemr;		/* Mode Monitoring Register Offset */
-	int (*configure)(void *base);	/* Platform specific configuration */
+	int (*configure)(void __iomem *base);	/* Platform specific config */
 };
 
 static const struct rst_config rcar_rst_gen1 __initconst = {

drivers/soc/samsung/Kconfig

···
 # SPDX-License-Identifier: GPL-2.0
 #
-# SAMSUNG SoC drivers
+# Samsung SoC drivers
 #
 menuconfig SOC_SAMSUNG
 	bool "Samsung SoC driver support" if COMPILE_TEST

drivers/soc/samsung/exynos-chipid.c

···
  * Copyright (c) 2019 Samsung Electronics Co., Ltd.
  *	      http://www.samsung.com/
  *
- * EXYNOS - CHIP ID support
+ * Exynos - CHIP ID support
  * Author: Pankaj Dubey <[e-mail]>
  * Author: Bartlomiej Zolnierkiewicz <[e-mail]>
  */

drivers/soc/samsung/exynos-pmu.c

···
 // Copyright (c) 2011-2014 Samsung Electronics Co., Ltd.
 //		http://www.samsung.com/
 //
-// EXYNOS - CPU PMU(Power Management Unit) support
+// Exynos - CPU PMU(Power Management Unit) support
 
 #include <linux/of.h>
 #include <linux/of_address.h>
···
 static int exynos_pmu_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	pmu_base_addr = devm_ioremap_resource(dev, res);
+	pmu_base_addr = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(pmu_base_addr))
 		return PTR_ERR(pmu_base_addr);
 

drivers/soc/samsung/exynos-pmu.h

···
  * Copyright (c) 2015 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
- * Header for EXYNOS PMU Driver support
+ * Header for Exynos PMU Driver support
  */
 
 #ifndef __EXYNOS_PMU_H

drivers/soc/samsung/exynos3250-pmu.c

···
 // Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
 //		http://www.samsung.com/
 //
-// EXYNOS3250 - CPU PMU (Power Management Unit) support
+// Exynos3250 - CPU PMU (Power Management Unit) support
 
 #include <linux/soc/samsung/exynos-regs-pmu.h>
 #include <linux/soc/samsung/exynos-pmu.h>

drivers/soc/samsung/exynos4-pmu.c

···
 // Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
 //		http://www.samsung.com/
 //
-// EXYNOS4 - CPU PMU(Power Management Unit) support
+// Exynos4 - CPU PMU(Power Management Unit) support
 
 #include <linux/soc/samsung/exynos-regs-pmu.h>
 #include <linux/soc/samsung/exynos-pmu.h>

drivers/soc/samsung/exynos5250-pmu.c

···
 // Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
 //		http://www.samsung.com/
 //
-// EXYNOS5250 - CPU PMU (Power Management Unit) support
+// Exynos5250 - CPU PMU (Power Management Unit) support
 
 #include <linux/soc/samsung/exynos-regs-pmu.h>
 #include <linux/soc/samsung/exynos-pmu.h>

drivers/soc/samsung/exynos5420-pmu.c

···
 // Copyright (c) 2011-2015 Samsung Electronics Co., Ltd.
 //		http://www.samsung.com/
 //
-// EXYNOS5420 - CPU PMU (Power Management Unit) support
+// Exynos5420 - CPU PMU (Power Management Unit) support
 
 #include <linux/pm.h>
 #include <linux/soc/samsung/exynos-regs-pmu.h>

drivers/soc/tegra/Kconfig

···
 	def_bool y
 	depends on ARCH_TEGRA
 	select SOC_BUS
+	select TEGRA20_APB_DMA if ARCH_TEGRA_2x_SOC
 
 config SOC_TEGRA_FLOWCTRL
 	bool

drivers/soc/tegra/fuse/fuse-tegra.c

···
 };
 
 static const struct of_device_id tegra_fuse_match[] = {
+#ifdef CONFIG_ARCH_TEGRA_194_SOC
+	{ .compatible = "nvidia,tegra194-efuse", .data = &tegra194_fuse_soc },
+#endif
 #ifdef CONFIG_ARCH_TEGRA_186_SOC
 	{ .compatible = "nvidia,tegra186-efuse", .data = &tegra186_fuse_soc },
 #endif

drivers/soc/tegra/fuse/fuse-tegra30.c

···
 	.num_lookups = ARRAY_SIZE(tegra186_fuse_lookups),
 };
 #endif
+
+#if defined(CONFIG_ARCH_TEGRA_194_SOC)
+static const struct nvmem_cell_lookup tegra194_fuse_lookups[] = {
+	{
+		.nvmem_name = "fuse",
+		.cell_name = "xusb-pad-calibration",
+		.dev_id = "3520000.padctl",
+		.con_id = "calibration",
+	}, {
+		.nvmem_name = "fuse",
+		.cell_name = "xusb-pad-calibration-ext",
+		.dev_id = "3520000.padctl",
+		.con_id = "calibration-ext",
+	},
+};
+
+static const struct tegra_fuse_info tegra194_fuse_info = {
+	.read = tegra30_fuse_read,
+	.size = 0x300,
+	.spare = 0x280,
+};
+
+const struct tegra_fuse_soc tegra194_fuse_soc = {
+	.init = tegra30_fuse_init,
+	.info = &tegra194_fuse_info,
+	.lookups = tegra194_fuse_lookups,
+	.num_lookups = ARRAY_SIZE(tegra194_fuse_lookups),
+};
+#endif

drivers/soc/tegra/fuse/fuse.h

···
 extern const struct tegra_fuse_soc tegra186_fuse_soc;
 #endif
 
+#ifdef CONFIG_ARCH_TEGRA_194_SOC
+extern const struct tegra_fuse_soc tegra194_fuse_soc;
+#endif
+
 #endif

drivers/soc/tegra/fuse/tegra-apbmisc.c

···
 #define PMC_STRAPPING_OPT_A_RAM_CODE_MASK_SHORT	\
 	(0x3 << PMC_STRAPPING_OPT_A_RAM_CODE_SHIFT)
 
-static void __iomem *apbmisc_base;
-static void __iomem *strapping_base;
 static bool long_ram_code;
+static u32 strapping;
+static u32 chipid;
 
 u32 tegra_read_chipid(void)
 {
-	if (!apbmisc_base) {
-		WARN(1, "Tegra Chip ID not yet available\n");
-		return 0;
-	}
+	WARN(!chipid, "Tegra ABP MISC not yet available\n");
 
-	return readl_relaxed(apbmisc_base + 4);
+	return chipid;
 }
 
 u8 tegra_get_chip_id(void)
···
 
 u32 tegra_read_straps(void)
 {
-	if (strapping_base)
-		return readl_relaxed(strapping_base);
-	else
-		return 0;
+	WARN(!chipid, "Tegra ABP MISC not yet available\n");
+
+	return strapping;
 }
 
 u32 tegra_read_ram_code(void)
···
 static const struct of_device_id apbmisc_match[] __initconst = {
 	{ .compatible = "nvidia,tegra20-apbmisc", },
 	{ .compatible = "nvidia,tegra186-misc", },
+	{ .compatible = "nvidia,tegra194-misc", },
 	{},
 };
 
···
 
 void __init tegra_init_apbmisc(void)
 {
+	void __iomem *apbmisc_base, *strapping_base;
 	struct resource apbmisc, straps;
 	struct device_node *np;
 
···
 			apbmisc.flags = IORESOURCE_MEM;
 
 			/* strapping options */
-			if (tegra_get_chip_id() == TEGRA124) {
+			if (of_machine_is_compatible("nvidia,tegra124")) {
 				straps.start = 0x7000e864;
 				straps.end = 0x7000e867;
 			} else {
···
 	}
 
 	apbmisc_base = ioremap(apbmisc.start, resource_size(&apbmisc));
-	if (!apbmisc_base)
+	if (!apbmisc_base) {
 		pr_err("failed to map APBMISC registers\n");
+	} else {
+		chipid = readl_relaxed(apbmisc_base + 4);
+		iounmap(apbmisc_base);
+	}
 
 	strapping_base = ioremap(straps.start, resource_size(&straps));
-	if (!strapping_base)
+	if (!strapping_base) {
 		pr_err("failed to map strapping options registers\n");
+	} else {
+		strapping = readl_relaxed(strapping_base);
+		iounmap(strapping_base);
+	}
 
 	long_ram_code = of_property_read_bool(np, "nvidia,long-ram-code");
 }

drivers/soc/tegra/regulators-tegra20.c

···
 			core_target_uV = max(rtc_uV - max_spread, core_target_uV);
 		}
 
+		if (core_uV == core_target_uV)
+			goto update_rtc;
+
 		err = regulator_set_voltage_rdev(core_rdev,
 						 core_target_uV,
 						 core_max_uV,
···
 			return err;
 
 		core_uV = core_target_uV;
-
+update_rtc:
 		if (rtc_uV < rtc_min_uV) {
 			rtc_target_uV = min(rtc_uV + max_spread, rtc_min_uV);
 			rtc_target_uV = min(core_uV + max_spread, rtc_target_uV);
···
 			rtc_target_uV = max(rtc_uV - max_spread, rtc_min_uV);
 			rtc_target_uV = max(core_uV - max_spread, rtc_target_uV);
 		}
+
+		if (rtc_uV == rtc_target_uV)
+			continue;
 
 		err = regulator_set_voltage_rdev(rtc_rdev,
 						 rtc_target_uV,

drivers/soc/tegra/regulators-tegra30.c

···
 			cpu_target_uV = max(core_uV - max_spread, cpu_target_uV);
 		}
 
+		if (cpu_uV == cpu_target_uV)
+			goto update_core;
+
 		err = regulator_set_voltage_rdev(cpu_rdev,
 						 cpu_target_uV,
 						 cpu_max_uV,
···
 		} else {
 			core_target_uV = max(core_target_uV, core_uV - core_max_step);
 		}
+
+		if (core_uV == core_target_uV)
+			continue;
 
 		err = regulator_set_voltage_rdev(core_rdev,
 						 core_target_uV,

drivers/soc/ti/knav_qmss_queue.c

···
 
 static struct knav_device *kdev;
 static DEFINE_MUTEX(knav_dev_lock);
+#define knav_dev_lock_held() \
+	lockdep_is_held(&knav_dev_lock)
 
 /* Queue manager register indices in DTS */
 #define KNAV_QUEUE_PEEK_REG_INDEX	0
···
 #define knav_queue_idx_to_inst(kdev, idx)			\
 	(kdev->instances + (idx << kdev->inst_shift))
 
-#define for_each_handle_rcu(qh, inst)			\
-	list_for_each_entry_rcu(qh, &inst->handles, list)
+#define for_each_handle_rcu(qh, inst)				\
+	list_for_each_entry_rcu(qh, &inst->handles, list,	\
+				knav_dev_lock_held())
 
 #define for_each_instance(idx, inst, kdev)		\
 	for (idx = 0, inst = kdev->instances;		\

drivers/soc/xilinx/Kconfig

···
 	bool "Enable Xilinx Zynq MPSoC Power Management driver"
 	depends on PM && ARCH_ZYNQMP
 	default y
+	select MAILBOX
+	select ZYNQMP_IPI_MBOX
 	help
 	  Say yes to enable power management support for ZyqnMP SoC.
 	  This driver uses firmware driver as an interface for power
 	  management request to firmware. It registers isr to handle
-	  power management callbacks from firmware.
+	  power management callbacks from firmware. It registers mailbox client
+	  to handle power management callbacks from firmware.
+
 	  If in doubt, say N.
 
 config ZYNQMP_PM_DOMAINS

drivers/soc/xilinx/zynqmp_power.c

···
 /*
  * Xilinx Zynq MPSoC Power Management
  *
- *  Copyright (C) 2014-2018 Xilinx, Inc.
+ *  Copyright (C) 2014-2019 Xilinx, Inc.
  *
  *  Davorin Mista <[e-mail]>
  *  Jolly Shah <[e-mail]>
···
 #include <linux/suspend.h>
 
 #include <linux/firmware/xlnx-zynqmp.h>
+#include <linux/mailbox/zynqmp-ipi-message.h>
+
+/**
+ * struct zynqmp_pm_work_struct - Wrapper for struct work_struct
+ * @callback_work:	Work structure
+ * @args:		Callback arguments
+ */
+struct zynqmp_pm_work_struct {
+	struct work_struct callback_work;
+	u32 args[CB_ARG_CNT];
+};
+
+static struct zynqmp_pm_work_struct *zynqmp_pm_init_suspend_work;
+static struct mbox_chan *rx_chan;
+static const struct zynqmp_eemi_ops *eemi_ops;
 
 enum pm_suspend_mode {
 	PM_SUSPEND_MODE_FIRST = 0,
···
 };
 
 static enum pm_suspend_mode suspend_mode = PM_SUSPEND_MODE_STD;
-static const struct zynqmp_eemi_ops *eemi_ops;
 
 enum pm_api_cb_id {
 	PM_INIT_SUSPEND_CB = 30,
···
 	}
 
 	return IRQ_HANDLED;
+}
+
+static void ipi_receive_callback(struct mbox_client *cl, void *data)
+{
+	struct zynqmp_ipi_message *msg = (struct zynqmp_ipi_message *)data;
+	u32 payload[CB_PAYLOAD_SIZE];
+	int ret;
+
+	memcpy(payload, msg->data, sizeof(msg->len));
+	/* First element is callback API ID, others are callback arguments */
+	if (payload[0] == PM_INIT_SUSPEND_CB) {
+		if (work_pending(&zynqmp_pm_init_suspend_work->callback_work))
+			return;
+
+		/* Copy callback arguments into work's structure */
+		memcpy(zynqmp_pm_init_suspend_work->args, &payload[1],
+		       sizeof(zynqmp_pm_init_suspend_work->args));
+
+		queue_work(system_unbound_wq,
+			   &zynqmp_pm_init_suspend_work->callback_work);
+
+		/* Send NULL message to mbox controller to ack the message */
+		ret = mbox_send_message(rx_chan, NULL);
+		if (ret)
+			pr_err("IPI ack failed. Error %d\n", ret);
+	}
+}
+
+/**
+ * zynqmp_pm_init_suspend_work_fn - Initialize suspend
+ * @work:	Pointer to work_struct
+ *
+ * Bottom-half of PM callback IRQ handler.
+ */
+static void zynqmp_pm_init_suspend_work_fn(struct work_struct *work)
+{
+	struct zynqmp_pm_work_struct *pm_work =
+		container_of(work, struct zynqmp_pm_work_struct, callback_work);
+
+	if (pm_work->args[0] == SUSPEND_SYSTEM_SHUTDOWN) {
+		orderly_poweroff(true);
+	} else if (pm_work->args[0] == SUSPEND_POWER_REQUEST) {
+		pm_suspend(PM_SUSPEND_MEM);
+	} else {
+		pr_err("%s Unsupported InitSuspendCb reason code %d.\n",
+		       __func__, pm_work->args[0]);
+	}
 }
 
 static ssize_t suspend_mode_show(struct device *dev,
···
 {
 	int ret, irq;
 	u32 pm_api_version;
+	struct mbox_client *client;
 
 	eemi_ops = zynqmp_pm_get_eemi_ops();
 	if (IS_ERR(eemi_ops))
···
 	if (pm_api_version < ZYNQMP_PM_VERSION)
 		return -ENODEV;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0)
-		return -ENXIO;
+	if (of_find_property(pdev->dev.of_node, "mboxes", NULL)) {
+		zynqmp_pm_init_suspend_work =
+			devm_kzalloc(&pdev->dev,
+				     sizeof(struct zynqmp_pm_work_struct),
+				     GFP_KERNEL);
+		if (!zynqmp_pm_init_suspend_work)
+			return -ENOMEM;
 
-	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, zynqmp_pm_isr,
-					IRQF_NO_SUSPEND | IRQF_ONESHOT,
-					dev_name(&pdev->dev), &pdev->dev);
-	if (ret) {
-		dev_err(&pdev->dev, "devm_request_threaded_irq '%d' failed "
-			"with %d\n", irq, ret);
-		return ret;
+		INIT_WORK(&zynqmp_pm_init_suspend_work->callback_work,
+			  zynqmp_pm_init_suspend_work_fn);
+		client = devm_kzalloc(&pdev->dev, sizeof(*client), GFP_KERNEL);
+		if (!client)
+			return -ENOMEM;
+
+		client->dev = &pdev->dev;
+		client->rx_callback = ipi_receive_callback;
+
+		rx_chan = mbox_request_channel_byname(client, "rx");
+		if (IS_ERR(rx_chan)) {
+			dev_err(&pdev->dev, "Failed to request rx channel\n");
+			return IS_ERR(rx_chan);
+		}
+	} else if (of_find_property(pdev->dev.of_node, "interrupts", NULL)) {
+		irq = platform_get_irq(pdev, 0);
+		if (irq <= 0)
+			return -ENXIO;
+
+		ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+						zynqmp_pm_isr,
+						IRQF_NO_SUSPEND | IRQF_ONESHOT,
+						dev_name(&pdev->dev),
+						&pdev->dev);
+		if (ret) {
+			dev_err(&pdev->dev, "devm_request_threaded_irq '%d' "
+					    "failed with %d\n", irq, ret);
+			return ret;
+		}
+	} else {
+		dev_err(&pdev->dev, "Required property not found in DT node\n");
+		return -ENOENT;
 	}
 
 	ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);
···
 static int zynqmp_pm_remove(struct platform_device *pdev)
 {
 	sysfs_remove_file(&pdev->dev.kobj, &dev_attr_suspend_mode.attr);
+
+	if (!rx_chan)
+		mbox_free_channel(rx_chan);
 
 	return 0;
 }

drivers/tee/optee/core.c

···
 	arm_smccc_hvc(a0, a1, a2, a3, a4, a5, a6, a7, res);
 }
 
-static optee_invoke_fn *get_invoke_func(struct device_node *np)
+static optee_invoke_fn *get_invoke_func(struct device *dev)
 {
 	const char *method;
 
-	pr_info("probing for conduit method from DT.\n");
+	pr_info("probing for conduit method.\n");
 
-	if (of_property_read_string(np, "method", &method)) {
+	if (device_property_read_string(dev, "method", &method)) {
 		pr_warn("missing \"method\" property\n");
 		return ERR_PTR(-ENXIO);
 	}
···
 	return ERR_PTR(-EINVAL);
 }
 
-static struct optee *optee_probe(struct device_node *np)
+static int optee_remove(struct platform_device *pdev)
+{
+	struct optee *optee = platform_get_drvdata(pdev);
+
+	/*
+	 * Ask OP-TEE to free all cached shared memory objects to decrease
+	 * reference counters and also avoid wild pointers in secure world
+	 * into the old shared memory range.
+	 */
+	optee_disable_shm_cache(optee);
+
+	/*
+	 * The two devices have to be unregistered before we can free the
+	 * other resources.
+	 */
+	tee_device_unregister(optee->supp_teedev);
+	tee_device_unregister(optee->teedev);
+
+	tee_shm_pool_free(optee->pool);
+	if (optee->memremaped_shm)
+		memunmap(optee->memremaped_shm);
+	optee_wait_queue_exit(&optee->wait_queue);
+	optee_supp_uninit(&optee->supp);
+	mutex_destroy(&optee->call_queue.mutex);
+
+	kfree(optee);
+
+	return 0;
+}
+
+static int optee_probe(struct platform_device *pdev)
 {
 	optee_invoke_fn *invoke_fn;
 	struct tee_shm_pool *pool = ERR_PTR(-EINVAL);
···
 	u32 sec_caps;
 	int rc;
 
-	invoke_fn = get_invoke_func(np);
+	invoke_fn = get_invoke_func(&pdev->dev);
 	if (IS_ERR(invoke_fn))
-		return (void *)invoke_fn;
+		return PTR_ERR(invoke_fn);
 
 	if (!optee_msg_api_uid_is_optee_api(invoke_fn)) {
 		pr_warn("api uid mismatch\n");
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
 
 	optee_msg_get_os_revision(invoke_fn);
 
 	if (!optee_msg_api_revision_is_compatible(invoke_fn)) {
 		pr_warn("api revision mismatch\n");
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
 
 	if (!optee_msg_exchange_capabilities(invoke_fn, &sec_caps)) {
 		pr_warn("capabilities mismatch\n");
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
 
 	/*
···
 		pool = optee_config_shm_memremap(invoke_fn, &memremaped_shm);
 
 	if (IS_ERR(pool))
-		return (void *)pool;
+		return PTR_ERR(pool);
 
 	optee = kzalloc(sizeof(*optee), GFP_KERNEL);
 	if (!optee) {
···
 	if (optee->sec_caps & OPTEE_SMC_SEC_CAP_DYNAMIC_SHM)
 		pr_info("dynamic shared memory is enabled\n");
 
-	return optee;
+	platform_set_drvdata(pdev, optee);
+
+	rc = optee_enumerate_devices();
+	if (rc) {
+		optee_remove(pdev);
+		return rc;
+	}
+
+	pr_info("initialized driver\n");
+	return 0;
 err:
 	if (optee) {
 		/*
···
 		tee_shm_pool_free(pool);
 	if (memremaped_shm)
 		memunmap(memremaped_shm);
-	return ERR_PTR(rc);
+	return rc;
 }
 
-static void optee_remove(struct optee *optee)
-{
-	/*
-	 * Ask OP-TEE to free all cached shared memory objects to decrease
-	 * reference counters and also avoid wild pointers in secure world
-	 * into the old shared memory range.
-	 */
-	optee_disable_shm_cache(optee);
-
-	/*
-	 * The two devices has to be unregistered before we can free the
-	 * other resources.
-	 */
-	tee_device_unregister(optee->supp_teedev);
-	tee_device_unregister(optee->teedev);
-
-	tee_shm_pool_free(optee->pool);
-	if (optee->memremaped_shm)
-		memunmap(optee->memremaped_shm);
-	optee_wait_queue_exit(&optee->wait_queue);
-	optee_supp_uninit(&optee->supp);
-	mutex_destroy(&optee->call_queue.mutex);
-
-	kfree(optee);
-}
-
-static const struct of_device_id optee_match[] = {
+static const struct of_device_id optee_dt_match[] = {
 	{ .compatible = "linaro,optee-tz" },
 	{},
 };
+MODULE_DEVICE_TABLE(of, optee_dt_match);
 
-static struct optee *optee_svc;
-
-static int __init optee_driver_init(void)
-{
-	struct device_node *fw_np = NULL;
-	struct device_node *np = NULL;
-	struct optee *optee = NULL;
-	int rc = 0;
-
-	/* Node is supposed to be below /firmware */
-	fw_np = of_find_node_by_name(NULL, "firmware");
-	if (!fw_np)
-		return -ENODEV;
-
-	np = of_find_matching_node(fw_np, optee_match);
-	if (!np || !of_device_is_available(np)) {
-		of_node_put(np);
-		return -ENODEV;
-	}
-
-	optee = optee_probe(np);
-	of_node_put(np);
-
-	if (IS_ERR(optee))
-		return PTR_ERR(optee);
-
-	rc = optee_enumerate_devices();
-	if (rc) {
-		optee_remove(optee);
-		return rc;
-	}
-
-	pr_info("initialized driver\n");
-
-	optee_svc = optee;
-
-	return 0;
-}
-module_init(optee_driver_init);
-
-static void __exit optee_driver_exit(void)
-{
-	struct optee *optee = optee_svc;
-
-	optee_svc = NULL;
-	if (optee)
-		optee_remove(optee);
-}
-module_exit(optee_driver_exit);
+static struct platform_driver optee_driver = {
+	.probe  = optee_probe,
+	.remove = optee_remove,
+	.driver = {
+		.name = "optee",
+		.of_match_table = optee_dt_match,
+	},
+};
+module_platform_driver(optee_driver);
 
 MODULE_AUTHOR("Linaro");
 MODULE_DESCRIPTION("OP-TEE driver");
 MODULE_SUPPORTED_DEVICE("");
 MODULE_VERSION("1.0");
 MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:optee");

drivers/tty/serial/ucc_uart.c

···
 #include <soc/fsl/qe/ucc_slow.h>
 
 #include <linux/firmware.h>
-#include <asm/reg.h>
+#include <soc/fsl/cpm.h>
+
+#ifdef CONFIG_PPC32
+#include <asm/reg.h> /* mfspr, SPRN_SVR */
+#endif
 
 /*
  * The GUMR flag for Soft UART.  This would normally be defined in qe.h,
···
 	struct qe_bd *bdp = qe_port->tx_bd_base;
 
 	while (1) {
-		if (in_be16(&bdp->status) & BD_SC_READY)
+		if (qe_ioread16be(&bdp->status) & BD_SC_READY)
 			/* This BD is not done, so return "not done" */
 			return 0;
 
-		if (in_be16(&bdp->status) & BD_SC_WRAP)
+		if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
 			/*
 			 * This BD is done and it's the last one, so return
 			 * "done"
···
 	struct uart_qe_port *qe_port =
 		container_of(port, struct uart_qe_port, port);
 
-	clrbits16(&qe_port->uccp->uccm, UCC_UART_UCCE_TX);
+	qe_clrbits_be16(&qe_port->uccp->uccm, UCC_UART_UCCE_TX);
 }
 
 /*
···
 		/* Pick next descriptor and fill from buffer */
 		bdp = qe_port->tx_cur;
 
-		p = qe2cpu_addr(bdp->buf, qe_port);
+		p = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
 
 		*p++ = port->x_char;
-		out_be16(&bdp->length, 1);
-		setbits16(&bdp->status, BD_SC_READY);
+		qe_iowrite16be(1, &bdp->length);
+		qe_setbits_be16(&bdp->status, BD_SC_READY);
 		/* Get next BD. */
-		if (in_be16(&bdp->status) & BD_SC_WRAP)
+		if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
 			bdp = qe_port->tx_bd_base;
 		else
 			bdp++;
···
 	/* Pick next descriptor and fill from buffer */
 	bdp = qe_port->tx_cur;
 
-	while (!(in_be16(&bdp->status) & BD_SC_READY) &&
+	while (!(qe_ioread16be(&bdp->status) & BD_SC_READY) &&
 	       (xmit->tail != xmit->head)) {
 		count = 0;
-		p = qe2cpu_addr(bdp->buf, qe_port);
+		p = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
 		while (count < qe_port->tx_fifosize) {
 			*p++ = xmit->buf[xmit->tail];
 			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
···
 				break;
 		}
 
-		out_be16(&bdp->length, count);
-		setbits16(&bdp->status, BD_SC_READY);
+		qe_iowrite16be(count, &bdp->length);
+		qe_setbits_be16(&bdp->status, BD_SC_READY);
 
 		/* Get next BD. */
-		if (in_be16(&bdp->status) & BD_SC_WRAP)
+		if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
 			bdp = qe_port->tx_bd_base;
 		else
 			bdp++;
···
 		container_of(port, struct uart_qe_port, port);
 
 	/* If we currently are transmitting, then just return */
-	if (in_be16(&qe_port->uccp->uccm) & UCC_UART_UCCE_TX)
+	if (qe_ioread16be(&qe_port->uccp->uccm) & UCC_UART_UCCE_TX)
 		return;
 
 	/* Otherwise, pump the port and start transmission */
 	if (qe_uart_tx_pump(qe_port))
-		setbits16(&qe_port->uccp->uccm, UCC_UART_UCCE_TX);
+		qe_setbits_be16(&qe_port->uccp->uccm, UCC_UART_UCCE_TX);
 }
 
 /*
···
 	struct uart_qe_port *qe_port =
 		container_of(port, struct uart_qe_port, port);
 
-	clrbits16(&qe_port->uccp->uccm, UCC_UART_UCCE_RX);
+	qe_clrbits_be16(&qe_port->uccp->uccm, UCC_UART_UCCE_RX);
 }
 
 /* Start or stop sending  break signal
···
 	 */
 	bdp = qe_port->rx_cur;
 	while (1) {
-		status = in_be16(&bdp->status);
+		status = qe_ioread16be(&bdp->status);
 
 		/* If this one is empty, then we assume we've read them all */
 		if (status & BD_SC_EMPTY)
 			break;
 
 		/* get number of characters, and check space in RX buffer */
-		i = in_be16(&bdp->length);
+		i = qe_ioread16be(&bdp->length);
 
 		/* If we don't have enough room in RX buffer for the entire BD,
 		 * then we try later, which will be the next RX interrupt.
···
 		}
 
 		/* get pointer */
-		cp = qe2cpu_addr(bdp->buf, qe_port);
+		cp = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
 
 		/* loop through the buffer */
 		while (i-- > 0) {
···
 		}
 
 		/* This BD is ready to be used again. Clear status. get next */
-		clrsetbits_be16(&bdp->status, BD_SC_BR | BD_SC_FR | BD_SC_PR |
-			BD_SC_OV | BD_SC_ID, BD_SC_EMPTY);
-		if (in_be16(&bdp->status) & BD_SC_WRAP)
+		qe_clrsetbits_be16(&bdp->status,
+				   BD_SC_BR | BD_SC_FR | BD_SC_PR | BD_SC_OV | BD_SC_ID,
+				   BD_SC_EMPTY);
+		if (qe_ioread16be(&bdp->status) & BD_SC_WRAP)
 			bdp = qe_port->rx_bd_base;
 		else
 			bdp++;
···
 	u16 events;
 
 	/* Clear the interrupts */
-	events = in_be16(&uccp->ucce);
-	out_be16(&uccp->ucce, events);
+	events = qe_ioread16be(&uccp->ucce);
+	qe_iowrite16be(events, &uccp->ucce);
 
 	if (events & UCC_UART_UCCE_BRKE)
 		uart_handle_break(&qe_port->port);
···
 	bdp = qe_port->rx_bd_base;
 	qe_port->rx_cur = qe_port->rx_bd_base;
 	for (i = 0; i < (qe_port->rx_nrfifos - 1); i++) {
-		out_be16(&bdp->status, BD_SC_EMPTY | BD_SC_INTRPT);
-		out_be32(&bdp->buf, cpu2qe_addr(bd_virt, qe_port));
-		out_be16(&bdp->length, 0);
+		qe_iowrite16be(BD_SC_EMPTY | BD_SC_INTRPT, &bdp->status);
+		qe_iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
+		qe_iowrite16be(0, &bdp->length);
 		bd_virt += qe_port->rx_fifosize;
 		bdp++;
 	}
 
 	/* */
-	out_be16(&bdp->status, BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT);
-	out_be32(&bdp->buf, cpu2qe_addr(bd_virt, qe_port));
-	out_be16(&bdp->length, 0);
+	qe_iowrite16be(BD_SC_WRAP | BD_SC_EMPTY | BD_SC_INTRPT, &bdp->status);
+	qe_iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
+	qe_iowrite16be(0, &bdp->length);
 
 	/* Set the physical address of the host memory
 	 * buffers in the buffer descriptors, and the
···
 	qe_port->tx_cur = qe_port->tx_bd_base;
 	bdp = qe_port->tx_bd_base;
 	for (i = 0; i < (qe_port->tx_nrfifos - 1); i++) {
-		out_be16(&bdp->status, BD_SC_INTRPT);
-		out_be32(&bdp->buf, cpu2qe_addr(bd_virt, qe_port));
-		out_be16(&bdp->length, 0);
+		qe_iowrite16be(BD_SC_INTRPT, &bdp->status);
+		qe_iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
+		qe_iowrite16be(0, &bdp->length);
 		bd_virt += qe_port->tx_fifosize;
 		bdp++;
 	}
 
 	/* Loopback requires the preamble bit to be set on the first TX BD */
 #ifdef LOOPBACK
-	setbits16(&qe_port->tx_cur->status, BD_SC_P);
+	qe_setbits_be16(&qe_port->tx_cur->status, BD_SC_P);
 #endif
 
-	out_be16(&bdp->status, BD_SC_WRAP | BD_SC_INTRPT);
-	out_be32(&bdp->buf, cpu2qe_addr(bd_virt, qe_port));
-	out_be16(&bdp->length, 0);
+	qe_iowrite16be(BD_SC_WRAP | BD_SC_INTRPT, &bdp->status);
+	qe_iowrite32be(cpu2qe_addr(bd_virt, qe_port), &bdp->buf);
+	qe_iowrite16be(0, &bdp->length);
 }
 
 /*
···
 	ucc_slow_disable(qe_port->us_private, COMM_DIR_RX_AND_TX);
 
 	/* Program the UCC UART parameter RAM */
-	out_8(&uccup->common.rbmr, UCC_BMR_GBL | UCC_BMR_BO_BE);
-	out_8(&uccup->common.tbmr, UCC_BMR_GBL | UCC_BMR_BO_BE);
-	out_be16(&uccup->common.mrblr, qe_port->rx_fifosize);
-	out_be16(&uccup->maxidl, 0x10);
-	out_be16(&uccup->brkcr, 1);
-	out_be16(&uccup->parec, 0);
-	out_be16(&uccup->frmec, 0);
-	out_be16(&uccup->nosec, 0);
-	out_be16(&uccup->brkec, 0);
-	out_be16(&uccup->uaddr[0], 0);
-	out_be16(&uccup->uaddr[1], 0);
-	out_be16(&uccup->toseq, 0);
+	qe_iowrite8(UCC_BMR_GBL | UCC_BMR_BO_BE, &uccup->common.rbmr);
+	qe_iowrite8(UCC_BMR_GBL | UCC_BMR_BO_BE, &uccup->common.tbmr);
+	qe_iowrite16be(qe_port->rx_fifosize, &uccup->common.mrblr);
+	qe_iowrite16be(0x10, &uccup->maxidl);
+	qe_iowrite16be(1, &uccup->brkcr);
+	qe_iowrite16be(0, &uccup->parec);
+	qe_iowrite16be(0, &uccup->frmec);
+	qe_iowrite16be(0, &uccup->nosec);
+	qe_iowrite16be(0, &uccup->brkec);
+	qe_iowrite16be(0, &uccup->uaddr[0]);
+	qe_iowrite16be(0, &uccup->uaddr[1]);
+	qe_iowrite16be(0, &uccup->toseq);
 	for (i = 0; i < 8; i++)
-		out_be16(&uccup->cchars[i], 0xC000);
-	out_be16(&uccup->rccm, 0xc0ff);
+		qe_iowrite16be(0xC000, &uccup->cchars[i]);
+	qe_iowrite16be(0xc0ff, &uccup->rccm);
 
 	/* Configure the GUMR registers for UART */
 	if (soft_uart) {
 		/* Soft-UART requires a 1X multiplier for TX */
-		clrsetbits_be32(&uccp->gumr_l,
-			UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK |
-			UCC_SLOW_GUMR_L_RDCR_MASK,
-			UCC_SLOW_GUMR_L_MODE_UART | UCC_SLOW_GUMR_L_TDCR_1 |
-			UCC_SLOW_GUMR_L_RDCR_16);
+		qe_clrsetbits_be32(&uccp->gumr_l,
+				   UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK | UCC_SLOW_GUMR_L_RDCR_MASK,
+				   UCC_SLOW_GUMR_L_MODE_UART | UCC_SLOW_GUMR_L_TDCR_1 | UCC_SLOW_GUMR_L_RDCR_16);
 
-		clrsetbits_be32(&uccp->gumr_h, UCC_SLOW_GUMR_H_RFW,
-			UCC_SLOW_GUMR_H_TRX | UCC_SLOW_GUMR_H_TTX);
+		qe_clrsetbits_be32(&uccp->gumr_h, UCC_SLOW_GUMR_H_RFW,
+				   UCC_SLOW_GUMR_H_TRX | UCC_SLOW_GUMR_H_TTX);
 	} else {
-		clrsetbits_be32(&uccp->gumr_l,
-			UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK |
-			UCC_SLOW_GUMR_L_RDCR_MASK,
-			UCC_SLOW_GUMR_L_MODE_UART | UCC_SLOW_GUMR_L_TDCR_16 |
-			UCC_SLOW_GUMR_L_RDCR_16);
+		qe_clrsetbits_be32(&uccp->gumr_l,
+				   UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK | UCC_SLOW_GUMR_L_RDCR_MASK,
+				   UCC_SLOW_GUMR_L_MODE_UART | UCC_SLOW_GUMR_L_TDCR_16 | UCC_SLOW_GUMR_L_RDCR_16);
 
-		clrsetbits_be32(&uccp->gumr_h,
-			UCC_SLOW_GUMR_H_TRX | UCC_SLOW_GUMR_H_TTX,
-			UCC_SLOW_GUMR_H_RFW);
+		qe_clrsetbits_be32(&uccp->gumr_h,
+				   UCC_SLOW_GUMR_H_TRX | UCC_SLOW_GUMR_H_TTX,
+				   UCC_SLOW_GUMR_H_RFW);
 	}
 
 #ifdef LOOPBACK
-	clrsetbits_be32(&uccp->gumr_l, UCC_SLOW_GUMR_L_DIAG_MASK,
-		UCC_SLOW_GUMR_L_DIAG_LOOP);
-	clrsetbits_be32(&uccp->gumr_h,
-		UCC_SLOW_GUMR_H_CTSP | UCC_SLOW_GUMR_H_RSYN,
-		UCC_SLOW_GUMR_H_CDS);
+	qe_clrsetbits_be32(&uccp->gumr_l, UCC_SLOW_GUMR_L_DIAG_MASK,
+			   UCC_SLOW_GUMR_L_DIAG_LOOP);
+	qe_clrsetbits_be32(&uccp->gumr_h,
+			   UCC_SLOW_GUMR_H_CTSP | UCC_SLOW_GUMR_H_RSYN,
+			   UCC_SLOW_GUMR_H_CDS);
 #endif
 
 	/* Disable rx interrupts  and clear all pending events.  */
-	out_be16(&uccp->uccm, 0);
-	out_be16(&uccp->ucce, 0xffff);
-	out_be16(&uccp->udsr, 0x7e7e);
+	qe_iowrite16be(0, &uccp->uccm);
+	qe_iowrite16be(0xffff, &uccp->ucce);
+	qe_iowrite16be(0x7e7e, &uccp->udsr);
 
 	/* Initialize UPSMR */
-	out_be16(&uccp->upsmr, 0);
+	qe_iowrite16be(0, &uccp->upsmr);
 
 	if (soft_uart) {
-		out_be16(&uccup->supsmr, 0x30);
-		out_be16(&uccup->res92, 0);
-		out_be32(&uccup->rx_state, 0);
-		out_be32(&uccup->rx_cnt, 0);
-		out_8(&uccup->rx_bitmark, 0);
-		out_8(&uccup->rx_length, 10);
-		out_be32(&uccup->dump_ptr, 0x4000);
-		out_8(&uccup->rx_temp_dlst_qe, 0);
-		out_be32(&uccup->rx_frame_rem, 0);
-		out_8(&uccup->rx_frame_rem_size, 0);
+		qe_iowrite16be(0x30, &uccup->supsmr);
+		qe_iowrite16be(0, &uccup->res92);
+		qe_iowrite32be(0, &uccup->rx_state);
+		qe_iowrite32be(0, &uccup->rx_cnt);
+		qe_iowrite8(0, &uccup->rx_bitmark);
+		qe_iowrite8(10, &uccup->rx_length);
+		qe_iowrite32be(0x4000, &uccup->dump_ptr);
+		qe_iowrite8(0, &uccup->rx_temp_dlst_qe);
+		qe_iowrite32be(0, &uccup->rx_frame_rem);
+		qe_iowrite8(0, &uccup->rx_frame_rem_size);
 		/* Soft-UART requires TX to be 1X */
-		out_8(&uccup->tx_mode,
-			UCC_UART_TX_STATE_UART | UCC_UART_TX_STATE_X1);
-		out_be16(&uccup->tx_state, 0);
-		out_8(&uccup->resD4, 0);
-		out_be16(&uccup->resD5, 0);
+		qe_iowrite8(UCC_UART_TX_STATE_UART | UCC_UART_TX_STATE_X1,
+			    &uccup->tx_mode);
+		qe_iowrite16be(0, &uccup->tx_state);
+		qe_iowrite8(0, &uccup->resD4);
+		qe_iowrite16be(0, &uccup->resD5);
 
 		/* Set UART mode.
 		 * Enable receive and transmit.
···
 		 * ...
 		 * 6.Receiver must use 16x over sampling
 		 */
-		clrsetbits_be32(&uccp->gumr_l,
-			UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK |
-			UCC_SLOW_GUMR_L_RDCR_MASK,
-			UCC_SLOW_GUMR_L_MODE_QMC | UCC_SLOW_GUMR_L_TDCR_16 |
-			UCC_SLOW_GUMR_L_RDCR_16);
+		qe_clrsetbits_be32(&uccp->gumr_l,
+				   UCC_SLOW_GUMR_L_MODE_MASK | UCC_SLOW_GUMR_L_TDCR_MASK | UCC_SLOW_GUMR_L_RDCR_MASK,
+				   UCC_SLOW_GUMR_L_MODE_QMC | UCC_SLOW_GUMR_L_TDCR_16 | UCC_SLOW_GUMR_L_RDCR_16);
 
-		clrsetbits_be32(&uccp->gumr_h,
-			UCC_SLOW_GUMR_H_RFW | UCC_SLOW_GUMR_H_RSYN,
-			UCC_SLOW_GUMR_H_SUART | UCC_SLOW_GUMR_H_TRX |
-			UCC_SLOW_GUMR_H_TTX | UCC_SLOW_GUMR_H_TFL);
+		qe_clrsetbits_be32(&uccp->gumr_h,
+				   UCC_SLOW_GUMR_H_RFW | UCC_SLOW_GUMR_H_RSYN,
+				   UCC_SLOW_GUMR_H_SUART | UCC_SLOW_GUMR_H_TRX | UCC_SLOW_GUMR_H_TTX | UCC_SLOW_GUMR_H_TFL);
 
 #ifdef LOOPBACK
-		clrsetbits_be32(&uccp->gumr_l, UCC_SLOW_GUMR_L_DIAG_MASK,
-				UCC_SLOW_GUMR_L_DIAG_LOOP);
-		clrbits32(&uccp->gumr_h, UCC_SLOW_GUMR_H_CTSP |
-			  UCC_SLOW_GUMR_H_CDS);
+		qe_clrsetbits_be32(&uccp->gumr_l, UCC_SLOW_GUMR_L_DIAG_MASK,
+				   UCC_SLOW_GUMR_L_DIAG_LOOP);
+		qe_clrbits_be32(&uccp->gumr_h,
+				UCC_SLOW_GUMR_H_CTSP | UCC_SLOW_GUMR_H_CDS);
 #endif
 
 		cecr_subblock = ucc_slow_get_qe_cr_subblock(qe_port->ucc_num);
···
 	}
 
 	/* Startup rx-int */
-	setbits16(&qe_port->uccp->uccm, UCC_UART_UCCE_RX);
+	qe_setbits_be16(&qe_port->uccp->uccm, UCC_UART_UCCE_RX);
 	ucc_slow_enable(qe_port->us_private, COMM_DIR_RX_AND_TX);
 
 	return 0;
···
 
 	/* Stop uarts */
 	ucc_slow_disable(qe_port->us_private, COMM_DIR_RX_AND_TX);
-	clrbits16(&uccp->uccm, UCC_UART_UCCE_TX | UCC_UART_UCCE_RX);
+	qe_clrbits_be16(&uccp->uccm, UCC_UART_UCCE_TX | UCC_UART_UCCE_RX);
 
 	/* Shut them really down and reinit buffer descriptors */
 	ucc_slow_graceful_stop_tx(qe_port->us_private);
···
 	struct ucc_slow __iomem *uccp = qe_port->uccp;
 	unsigned int baud;
 	unsigned long flags;
-	u16 upsmr = in_be16(&uccp->upsmr);
+	u16 upsmr = qe_ioread16be(&uccp->upsmr);
 	struct ucc_uart_pram __iomem *uccup = qe_port->uccup;
-	u16 supsmr = in_be16(&uccup->supsmr);
+	u16 supsmr = qe_ioread16be(&uccup->supsmr);
 	u8 char_length = 2; /* 1 + CL + PEN + 1 + SL */
 
 	/* Character length programmed into the mode register is the
···
 	/* Update the per-port timeout. */
 	uart_update_timeout(port, termios->c_cflag, baud);
 
-	out_be16(&uccp->upsmr, upsmr);
+	qe_iowrite16be(upsmr, &uccp->upsmr);
 	if (soft_uart) {
-		out_be16(&uccup->supsmr, supsmr);
-		out_8(&uccup->rx_length, char_length);
+		qe_iowrite16be(supsmr, &uccup->supsmr);
+		qe_iowrite8(char_length, &uccup->rx_length);
 
 		/* Soft-UART requires a 1X multiplier for TX */
 		qe_setbrg(qe_port->us_info.rx_clock, baud, 16);
···
 	.verify_port    = qe_uart_verify_port,
 };
 
+
+#ifdef CONFIG_PPC32
 /*
  * Obtain the SOC model number and revision level
  *
···
 	release_firmware(fw);
 }
 
+static int soft_uart_init(struct platform_device *ofdev)
+{
+	struct device_node *np = ofdev->dev.of_node;
+	struct qe_firmware_info *qe_fw_info;
+	int ret;
+
+	if (of_find_property(np, "soft-uart", NULL)) {
+		dev_dbg(&ofdev->dev, "using Soft-UART mode\n");
+		soft_uart = 1;
+	} else {
+		return 0;
+	}
+
+	qe_fw_info = qe_get_firmware_info();
+
+	/* Check if the firmware has been uploaded. */
+	if (qe_fw_info && strstr(qe_fw_info->id, "Soft-UART")) {
+		firmware_loaded = 1;
+	} else {
+		char filename[32];
+		unsigned int soc;
+		unsigned int rev_h;
+		unsigned int rev_l;
+
+		soc = soc_info(&rev_h, &rev_l);
+		if (!soc) {
+			dev_err(&ofdev->dev, "unknown CPU model\n");
+			return -ENXIO;
+		}
+		sprintf(filename, "fsl_qe_ucode_uart_%u_%u%u.bin",
+			soc, rev_h, rev_l);
+
+		dev_info(&ofdev->dev, "waiting for firmware %s\n",
+			 filename);
+
+		/*
+		 * We call request_firmware_nowait instead of
+		 * request_firmware so that the driver can load and
+		 * initialize the ports without holding up the rest of
+		 * the kernel.  If hotplug support is enabled in the
+		 * kernel, then we use it.
+		 */
+		ret = request_firmware_nowait(THIS_MODULE,
+					      FW_ACTION_HOTPLUG, filename, &ofdev->dev,
+					      GFP_KERNEL, &ofdev->dev, uart_firmware_cont);
+		if (ret) {
+			dev_err(&ofdev->dev,
+				"could not load firmware %s\n",
+				filename);
+			return ret;
+		}
+	}
+	return 0;
+}
+
+#else /* !CONFIG_PPC32 */
+
+static int soft_uart_init(struct platform_device *ofdev)
+{
+	return 0;
+}
+
+#endif
+
+
 static int ucc_uart_probe(struct platform_device *ofdev)
 {
 	struct device_node *np = ofdev->dev.of_node;
-	const unsigned int *iprop;      /* Integer OF properties */
 	const char *sprop;      /* String OF properties */
 	struct uart_qe_port *qe_port = NULL;
 	struct resource res;
+	u32 val;
 	int ret;
 
 	/*
 	 * Determine if we need Soft-UART mode
 	 */
-	if (of_find_property(np, "soft-uart", NULL)) {
-		dev_dbg(&ofdev->dev, "using Soft-UART mode\n");
-		soft_uart = 1;
-	}
-
-	/*
-	 * If we are using Soft-UART, determine if we need to upload the
-	 * firmware, too.
-	 */
-	if (soft_uart) {
-		struct qe_firmware_info *qe_fw_info;
-
-		qe_fw_info = qe_get_firmware_info();
-
-		/* Check if the firmware has been uploaded. */
-		if (qe_fw_info && strstr(qe_fw_info->id, "Soft-UART")) {
-			firmware_loaded = 1;
-		} else {
-			char filename[32];
-			unsigned int soc;
-			unsigned int rev_h;
-			unsigned int rev_l;
-
-			soc = soc_info(&rev_h, &rev_l);
-			if (!soc) {
-				dev_err(&ofdev->dev, "unknown CPU model\n");
-				return -ENXIO;
-			}
-			sprintf(filename, "fsl_qe_ucode_uart_%u_%u%u.bin",
-				soc, rev_h, rev_l);
-
-			dev_info(&ofdev->dev, "waiting for firmware %s\n",
-				filename);
-
-			/*
-			 * We call request_firmware_nowait instead of
-			 * request_firmware so that the driver can load and
-			 * initialize the ports without holding up the rest of
-			 * the kernel.  If hotplug support is enabled in the
-			 * kernel, then we use it.
-			 */
-			ret = request_firmware_nowait(THIS_MODULE,
-				FW_ACTION_HOTPLUG, filename, &ofdev->dev,
-				GFP_KERNEL, &ofdev->dev, uart_firmware_cont);
-			if (ret) {
-				dev_err(&ofdev->dev,
-					"could not load firmware %s\n",
-					filename);
-				return ret;
-			}
-		}
-	}
+	ret = soft_uart_init(ofdev);
+	if (ret)
+		return ret;
 
 	qe_port = kzalloc(sizeof(struct uart_qe_port), GFP_KERNEL);
 	if (!qe_port) {
···
 
 	/* Get the UCC number (device ID) */
 	/* UCCs are numbered 1-7 */
-	iprop = of_get_property(np, "cell-index", NULL);
-	if (!iprop) {
-		iprop = of_get_property(np, "device-id", NULL);
-		if (!iprop) {
-			dev_err(&ofdev->dev, "UCC is unspecified in "
-				"device tree\n");
+	if (of_property_read_u32(np, "cell-index", &val)) {
+		if (of_property_read_u32(np, "device-id", &val)) {
+			dev_err(&ofdev->dev, "UCC is unspecified in device tree\n");
 			ret = -EINVAL;
 			goto out_free;
 		}
 	}
 
-	if ((*iprop < 1) || (*iprop > UCC_MAX_NUM)) {
-		dev_err(&ofdev->dev, "no support for UCC%u\n", *iprop);
+	if (val < 1 || val > UCC_MAX_NUM) {
+		dev_err(&ofdev->dev, "no support for UCC%u\n", val);
 		ret = -ENODEV;
 		goto out_free;
 	}
-	qe_port->ucc_num = *iprop - 1;
+	qe_port->ucc_num = val - 1;
 
 	/*
 	 * In the future, we should not require the BRG to be specified in the
···
 	}
 
 	/* Get the port number, numbered 0-3 */
-	iprop = of_get_property(np, "port-number", NULL);
-	if (!iprop) {
+	if (of_property_read_u32(np, "port-number", &val)) {
 		dev_err(&ofdev->dev, "missing port-number in device tree\n");
 		ret = -EINVAL;
 		goto out_free;
 	}
-	qe_port->port.line = *iprop;
+	qe_port->port.line = val;
 	if (qe_port->port.line >= UCC_MAX_UART) {
 		dev_err(&ofdev->dev, "port-number must be 0-%u\n",
 			UCC_MAX_UART - 1);
···
 		}
 	}
 
-	iprop = of_get_property(np, "brg-frequency", NULL);
-	if (!iprop) {
+	if (of_property_read_u32(np, "brg-frequency", &val)) {
 		dev_err(&ofdev->dev,
 		       "missing brg-frequency in device tree\n");
 		ret = -EINVAL;
 		goto out_np;
 	}
 
-	if (*iprop)
-		qe_port->port.uartclk = *iprop;
+	if (val)
+		qe_port->port.uartclk = val;
 	else {
+		if (!IS_ENABLED(CONFIG_PPC32)) {
+			dev_err(&ofdev->dev,
+				"invalid brg-frequency in device tree\n");
+			ret = -EINVAL;
+			goto out_np;
+		}
+
 		/*
 		 * Older versions of U-Boot do not initialize the brg-frequency
 		 * property, so in this case we assume the BRG frequency is
 		 * half the QE bus frequency.
 		 */
-		iprop = of_get_property(np, "bus-frequency", NULL);
-		if (!iprop) {
+		if (of_property_read_u32(np, "bus-frequency", &val)) {
 			dev_err(&ofdev->dev,
 				"missing QE bus-frequency in device tree\n");
 			ret = -EINVAL;
 			goto out_np;
 		}
-		if (*iprop)
-			qe_port->port.uartclk = *iprop / 2;
+		if (val)
+			qe_port->port.uartclk = val / 2;
 		else {
 			dev_err(&ofdev->dev,
 				"invalid QE bus-frequency in device tree\n");

include/dt-bindings/power/mt6765-power.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _DT_BINDINGS_POWER_MT6765_POWER_H
+#define _DT_BINDINGS_POWER_MT6765_POWER_H
+
+#define MT6765_POWER_DOMAIN_CONN		0
+#define MT6765_POWER_DOMAIN_MM			1
+#define MT6765_POWER_DOMAIN_MFG_ASYNC		2
+#define MT6765_POWER_DOMAIN_ISP			3
+#define MT6765_POWER_DOMAIN_MFG			4
+#define MT6765_POWER_DOMAIN_MFG_CORE0		5
+#define MT6765_POWER_DOMAIN_CAM			6
+#define MT6765_POWER_DOMAIN_VCODEC		7
+
+#endif /* _DT_BINDINGS_POWER_MT6765_POWER_H */

include/dt-bindings/power/qcom-rpmpd.h

···
 #define SDM845_GFX	7
 #define SDM845_MSS	8
 
+/* SM8150 Power Domain Indexes */
+#define SM8150_MSS	0
+#define SM8150_EBI	1
+#define SM8150_LMX	2
+#define SM8150_LCX	3
+#define SM8150_GFX	4
+#define SM8150_MX	5
+#define SM8150_MX_AO	6
+#define SM8150_CX	7
+#define SM8150_CX_AO	8
+#define SM8150_MMCX	9
+#define SM8150_MMCX_AO	10
+
+/* SC7180 Power Domain Indexes */
+#define SC7180_CX	0
+#define SC7180_CX_AO	1
+#define SC7180_GFX	2
+#define SC7180_MX	3
+#define SC7180_MX_AO	4
+#define SC7180_LMX	5
+#define SC7180_LCX	6
+#define SC7180_MSS	7
+
 /* SDM845 Power Domain performance levels */
 #define RPMH_REGULATOR_LEVEL_RETENTION	16
 #define RPMH_REGULATOR_LEVEL_MIN_SVS	48
 #define RPMH_REGULATOR_LEVEL_LOW_SVS	64
 #define RPMH_REGULATOR_LEVEL_SVS	128
 #define RPMH_REGULATOR_LEVEL_SVS_L1	192
+#define RPMH_REGULATOR_LEVEL_SVS_L2	224
 #define RPMH_REGULATOR_LEVEL_NOM	256
 #define RPMH_REGULATOR_LEVEL_NOM_L1	320
 #define RPMH_REGULATOR_LEVEL_NOM_L2	336

include/dt-bindings/reset/nuvoton,npcm7xx-reset.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+// Copyright (c) 2019 Nuvoton Technology corporation.
+
+#ifndef _DT_BINDINGS_NPCM7XX_RESET_H
+#define _DT_BINDINGS_NPCM7XX_RESET_H
+
+#define NPCM7XX_RESET_IPSRST1		0x20
+#define NPCM7XX_RESET_IPSRST2		0x24
+#define NPCM7XX_RESET_IPSRST3		0x34
+
+/* Reset lines on IP1 reset module (NPCM7XX_RESET_IPSRST1) */
+#define NPCM7XX_RESET_FIU3		1
+#define NPCM7XX_RESET_UDC1		5
+#define NPCM7XX_RESET_EMC1		6
+#define NPCM7XX_RESET_UART_2_3		7
+#define NPCM7XX_RESET_UDC2		8
+#define NPCM7XX_RESET_PECI		9
+#define NPCM7XX_RESET_AES		10
+#define NPCM7XX_RESET_UART_0_1		11
+#define NPCM7XX_RESET_MC		12
+#define NPCM7XX_RESET_SMB2		13
+#define NPCM7XX_RESET_SMB3		14
+#define NPCM7XX_RESET_SMB4		15
+#define NPCM7XX_RESET_SMB5		16
+#define NPCM7XX_RESET_PWM_M0		18
+#define NPCM7XX_RESET_TIMER_0_4		19
+#define NPCM7XX_RESET_TIMER_5_9		20
+#define NPCM7XX_RESET_EMC2		21
+#define NPCM7XX_RESET_UDC4		22
+#define NPCM7XX_RESET_UDC5		23
+#define NPCM7XX_RESET_UDC6		24
+#define NPCM7XX_RESET_UDC3		25
+#define NPCM7XX_RESET_ADC		27
+#define NPCM7XX_RESET_SMB6		28
+#define NPCM7XX_RESET_SMB7		29
+#define NPCM7XX_RESET_SMB0		30
+#define NPCM7XX_RESET_SMB1		31
+
+/* Reset lines on IP2 reset module (NPCM7XX_RESET_IPSRST2) */
+#define NPCM7XX_RESET_MFT0		0
+#define NPCM7XX_RESET_MFT1		1
+#define NPCM7XX_RESET_MFT2		2
+#define NPCM7XX_RESET_MFT3		3
+#define NPCM7XX_RESET_MFT4		4
+#define NPCM7XX_RESET_MFT5		5
+#define NPCM7XX_RESET_MFT6		6
+#define NPCM7XX_RESET_MFT7		7
+#define NPCM7XX_RESET_MMC		8
+#define NPCM7XX_RESET_SDHC		9
+#define NPCM7XX_RESET_GFX_SYS		10
+#define NPCM7XX_RESET_AHB_PCIBRG	11
+#define NPCM7XX_RESET_VDMA		12
+#define NPCM7XX_RESET_ECE		13
+#define NPCM7XX_RESET_VCD		14
+#define NPCM7XX_RESET_OTP		16
+#define NPCM7XX_RESET_SIOX1		18
+#define NPCM7XX_RESET_SIOX2		19
+#define NPCM7XX_RESET_3DES		21
+#define NPCM7XX_RESET_PSPI1		22
+#define NPCM7XX_RESET_PSPI2		23
+#define NPCM7XX_RESET_GMAC2		25
+#define NPCM7XX_RESET_USB_HOST		26
+#define NPCM7XX_RESET_GMAC1		28
+#define NPCM7XX_RESET_CP		31
+
+/* Reset lines on IP3 reset module (NPCM7XX_RESET_IPSRST3) */
+#define NPCM7XX_RESET_PWM_M1		0
+#define NPCM7XX_RESET_SMB12		1
+#define NPCM7XX_RESET_SPIX		2
+#define NPCM7XX_RESET_SMB13		3
+#define NPCM7XX_RESET_UDC0		4
+#define NPCM7XX_RESET_UDC7		5
+#define NPCM7XX_RESET_UDC8		6
+#define NPCM7XX_RESET_UDC9		7
+#define NPCM7XX_RESET_PCI_MAILBOX	9
+#define NPCM7XX_RESET_SMB14		12
+#define NPCM7XX_RESET_SHA		13
+#define NPCM7XX_RESET_SEC_ECC		14
+#define NPCM7XX_RESET_PCIE_RC		15
+#define NPCM7XX_RESET_TIMER_10_14	16
+#define NPCM7XX_RESET_RNG		17
+#define NPCM7XX_RESET_SMB15		18
+#define NPCM7XX_RESET_SMB8		19
+#define NPCM7XX_RESET_SMB9		20
+#define NPCM7XX_RESET_SMB10		21
+#define NPCM7XX_RESET_SMB11		22
+#define NPCM7XX_RESET_ESPI		23
+#define NPCM7XX_RESET_USB_PHY_1		24
+#define NPCM7XX_RESET_USB_PHY_2		25
+
+#endif

include/linux/cpuhotplug.h

···
 	CPUHP_AP_OFFLINE,
 	CPUHP_AP_SCHED_STARTING,
 	CPUHP_AP_RCUTREE_DYING,
+	CPUHP_AP_CPU_PM_STARTING,
 	CPUHP_AP_IRQ_GIC_STARTING,
 	CPUHP_AP_IRQ_HIP04_STARTING,
 	CPUHP_AP_IRQ_ARMADA_XP_STARTING,

include/linux/firmware/xlnx-zynqmp.h

···
 #define	ZYNQMP_PM_CAPABILITY_WAKEUP	0x4U
 #define	ZYNQMP_PM_CAPABILITY_UNUSABLE	0x8U
 
+/* Feature check status */
+#define PM_FEATURE_INVALID		-1
+#define PM_FEATURE_UNCHECKED		0
+
 /*
  * Firmware FPGA Manager flags
  * XILINX_ZYNQMP_PM_FPGA_FULL:	FPGA full reconfiguration
···
 	PM_CLOCK_GETRATE,
 	PM_CLOCK_SETPARENT,
 	PM_CLOCK_GETPARENT,
+	PM_FEATURE_CHECK = 63,
+	PM_API_MAX,
 };
 
 /* PMU-FW return status codes */
 enum pm_ret_status {
 	XST_PM_SUCCESS = 0,
+	XST_PM_NO_FEATURE = 19,
 	XST_PM_INTERNAL = 2000,
 	XST_PM_CONFLICT,
 	XST_PM_NO_ACCESS,

include/linux/of.h

···
 				int *lenp);
 extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
 extern struct device_node *of_get_next_cpu_node(struct device_node *prev);
+extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
+						 int index);
 
 #define for_each_property_of_node(dn, pp) \
 	for (pp = dn->properties; pp != NULL; pp = pp->next)
···
 }
 
 static inline struct device_node *of_get_next_cpu_node(struct device_node *prev)
+{
+	return NULL;
+}
+
+static inline struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
+					int index)
 {
 	return NULL;
 }

include/linux/platform_data/ti-sysc.h

···
 	s8 emufree_shift;
 };
 
+#define SYSC_QUIRK_CLKDM_NOAUTO		BIT(21)
 #define SYSC_QUIRK_FORCE_MSTANDBY	BIT(20)
 #define SYSC_MODULE_QUIRK_AESS		BIT(19)
 #define SYSC_MODULE_QUIRK_SGX		BIT(18)

include/linux/pm_domain.h

···
 int of_genpd_add_device(struct of_phandle_args *args, struct device *dev);
 int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
 			   struct of_phandle_args *subdomain_spec);
+int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
+			      struct of_phandle_args *subdomain_spec);
 struct generic_pm_domain *of_genpd_remove_last(struct device_node *np);
 int of_genpd_parse_idle_states(struct device_node *dn,
 			       struct genpd_power_state **states, int *n);
···
 
 static inline int of_genpd_add_subdomain(struct of_phandle_args *parent_spec,
 					 struct of_phandle_args *subdomain_spec)
+{
+	return -ENODEV;
+}
+
+static inline int of_genpd_remove_subdomain(struct of_phandle_args *parent_spec,
+					struct of_phandle_args *subdomain_spec)
 {
 	return -ENODEV;
 }

include/linux/psci.h

···
 
 int psci_cpu_suspend_enter(u32 state);
 bool psci_power_state_is_valid(u32 state);
+int psci_set_osi_mode(void);
+bool psci_has_osi_support(void);
 
 enum smccc_version {
 	SMCCC_VERSION_1_0,

include/linux/qcom_scm.h

···
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2010-2015, 2018, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2010-2015, 2018-2019 The Linux Foundation. All rights reserved.
  * Copyright (C) 2015 Linaro Ltd.
  */
 #ifndef __QCOM_SCM_H
···
 #define QCOM_SCM_PERM_RWX (QCOM_SCM_PERM_RW | QCOM_SCM_PERM_EXEC)
 
 #if IS_ENABLED(CONFIG_QCOM_SCM)
+extern bool qcom_scm_is_available(void);
+
 extern int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus);
 extern int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus);
-extern bool qcom_scm_is_available(void);
-extern bool qcom_scm_hdcp_available(void);
-extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
-			     u32 *resp);
-extern bool qcom_scm_ocmem_lock_available(void);
-extern int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
-			       u32 size, u32 mode);
-extern int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset,
-				 u32 size);
-extern bool qcom_scm_pas_supported(u32 peripheral);
+extern void qcom_scm_cpu_power_down(u32 flags);
+extern int qcom_scm_set_remote_state(u32 state, u32 id);
+
 extern int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
 				   size_t size);
 extern int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
 				  phys_addr_t size);
 extern int qcom_scm_pas_auth_and_reset(u32 peripheral);
 extern int qcom_scm_pas_shutdown(u32 peripheral);
-extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-			       unsigned int *src,
-			       const struct qcom_scm_vmperm *newvm,
-			       unsigned int dest_cnt);
-extern void qcom_scm_cpu_power_down(u32 flags);
-extern u32 qcom_scm_get_version(void);
-extern int qcom_scm_set_remote_state(u32 state, u32 id);
+extern bool qcom_scm_pas_supported(u32 peripheral);
+
+extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
+extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
+
 extern bool qcom_scm_restore_sec_cfg_available(void);
 extern int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare);
 extern int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size);
 extern int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare);
+extern int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
+			       unsigned int *src,
+			       const struct qcom_scm_vmperm *newvm,
+			       unsigned int dest_cnt);
+
+extern bool qcom_scm_ocmem_lock_available(void);
+extern int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
+			       u32 size, u32 mode);
+extern int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id, u32 offset,
+				 u32 size);
+
+extern bool qcom_scm_hdcp_available(void);
+extern int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
+			     u32 *resp);
+
 extern int qcom_scm_qsmmu500_wait_safe_toggle(bool en);
-extern int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val);
-extern int qcom_scm_io_writel(phys_addr_t addr, unsigned int val);
 #else
 
 #include <linux/errno.h>
 
-static inline
-int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	return -ENODEV;
-}
-static inline
-int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
-{
-	return -ENODEV;
-}
 static inline bool qcom_scm_is_available(void) { return false; }
+
+static inline int qcom_scm_set_cold_boot_addr(void *entry,
+		const cpumask_t *cpus) { return -ENODEV; }
+static inline int qcom_scm_set_warm_boot_addr(void *entry,
+		const cpumask_t *cpus) { return -ENODEV; }
+static inline void qcom_scm_cpu_power_down(u32 flags) {}
+static inline u32 qcom_scm_set_remote_state(u32 state,u32 id)
+		{ return -ENODEV; }
+
+static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
+		size_t size) { return -ENODEV; }
+static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
+		phys_addr_t size) { return -ENODEV; }
+static inline int qcom_scm_pas_auth_and_reset(u32 peripheral)
+		{ return -ENODEV; }
+static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
+static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
+
+static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val)
+		{ return -ENODEV; }
+static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val)
+		{ return -ENODEV; }
+
+static inline bool qcom_scm_restore_sec_cfg_available(void) { return false; }
+static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare)
+		{ return -ENODEV; }
+static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size)
+		{ return -ENODEV; }
+static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare)
+		{ return -ENODEV; }
+static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
+		unsigned int *src, const struct qcom_scm_vmperm *newvm,
+		unsigned int dest_cnt) { return -ENODEV; }
+
+static inline bool qcom_scm_ocmem_lock_available(void) { return false; }
+static inline int qcom_scm_ocmem_lock(enum qcom_scm_ocmem_client id, u32 offset,
+		u32 size, u32 mode) { return -ENODEV; }
+static inline int qcom_scm_ocmem_unlock(enum qcom_scm_ocmem_client id,
+		u32 offset, u32 size) { return -ENODEV; }
+
 static inline bool qcom_scm_hdcp_available(void) { return false; }
 static inline int qcom_scm_hdcp_req(struct qcom_scm_hdcp_req *req, u32 req_cnt,
-				    u32 *resp) { return -ENODEV; }
-static inline bool qcom_scm_pas_supported(u32 peripheral) { return false; }
-static inline int qcom_scm_pas_init_image(u32 peripheral, const void *metadata,
-					  size_t size) { return -ENODEV; }
-static inline int qcom_scm_pas_mem_setup(u32 peripheral, phys_addr_t addr,
-					 phys_addr_t size) { return -ENODEV; }
-static inline int
-qcom_scm_pas_auth_and_reset(u32 peripheral) { return -ENODEV; }
-static inline int qcom_scm_pas_shutdown(u32 peripheral) { return -ENODEV; }
-static inline int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
-				      unsigned int *src,
-				      const struct qcom_scm_vmperm *newvm,
-				      unsigned int dest_cnt) { return -ENODEV; }
-static inline void qcom_scm_cpu_power_down(u32 flags) {}
-static inline u32 qcom_scm_get_version(void) { return 0; }
-static inline u32
-qcom_scm_set_remote_state(u32 state,u32 id) { return -ENODEV; }
-static inline int qcom_scm_restore_sec_cfg(u32 device_id, u32 spare) { return -ENODEV; }
-static inline int qcom_scm_iommu_secure_ptbl_size(u32 spare, size_t *size) { return -ENODEV; }
-static inline int qcom_scm_iommu_secure_ptbl_init(u64 addr, u32 size, u32 spare) { return -ENODEV; }
-static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en) { return -ENODEV; }
-static inline int qcom_scm_io_readl(phys_addr_t addr, unsigned int *val) { return -ENODEV; }
-static inline int qcom_scm_io_writel(phys_addr_t addr, unsigned int val) { return -ENODEV; }
+		u32 *resp) { return -ENODEV; }
+
+static inline int qcom_scm_qsmmu500_wait_safe_toggle(bool en)
+		{ return -ENODEV; }
 #endif
 #endif

include/linux/scmi_protocol.h

···
 struct scmi_device {
 	u32 id;
 	u8 protocol_id;
+	const char *name;
 	struct device dev;
 	struct scmi_handle *handle;
 };
···
 #define to_scmi_dev(d) container_of(d, struct scmi_device, dev)
 
 struct scmi_device *
-scmi_device_create(struct device_node *np, struct device *parent, int protocol);
+scmi_device_create(struct device_node *np, struct device *parent, int protocol,
+		   const char *name);
 void scmi_device_destroy(struct scmi_device *scmi_dev);
 
 struct scmi_device_id {
 	u8 protocol_id;
+	const char *name;
 };
 
 struct scmi_driver {

include/linux/soc/samsung/exynos-pmu.h

···
  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
- * Header for EXYNOS PMU Driver support
+ * Header for Exynos PMU Driver support
  */
 
 #ifndef __LINUX_SOC_EXYNOS_PMU_H

include/linux/soc/samsung/exynos-regs-pmu.h

···
  * Copyright (c) 2010-2015 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
- * EXYNOS - Power management unit definition
+ * Exynos - Power management unit definition
  *
  * Notice:
  * This is not a list of all Exynos Power Management Unit SFRs.
···
 /* Only for S5Pv210 */
 #define S5PV210_EINT_WAKEUP_MASK	0xC004
 
-/* Only for EXYNOS4210 */
+/* Only for Exynos4210 */
 #define S5P_CMU_CLKSTOP_LCD1_LOWPWR	0x1154
 #define S5P_CMU_RESET_LCD1_LOWPWR	0x1174
 #define S5P_MODIMIF_MEM_LOWPWR		0x11C4
···
 #define S5P_SATA_MEM_LOWPWR		0x11E4
 #define S5P_LCD1_LOWPWR			0x1394
 
-/* Only for EXYNOS4x12 */
+/* Only for Exynos4x12 */
 #define S5P_ISP_ARM_LOWPWR			0x1050
 #define S5P_DIS_IRQ_ISP_ARM_LOCAL_LOWPWR	0x1054
 #define S5P_DIS_IRQ_ISP_ARM_CENTRAL_LOWPWR	0x1058
···
 #define S5P_SECSS_MEM_OPTION			0x2EC8
 #define S5P_ROTATOR_MEM_OPTION			0x2F48
 
-/* Only for EXYNOS4412 */
+/* Only for Exynos4412 */
 #define S5P_ARM_CORE2_LOWPWR			0x1020
 #define S5P_DIS_IRQ_CORE2			0x1024
 #define S5P_DIS_IRQ_CENTRAL2			0x1028
···
 #define S5P_DIS_IRQ_CORE3			0x1034
 #define S5P_DIS_IRQ_CENTRAL3			0x1038
 
-/* Only for EXYNOS3XXX */
+/* Only for Exynos3XXX */
 #define EXYNOS3_ARM_CORE0_SYS_PWR_REG			0x1000
 #define EXYNOS3_DIS_IRQ_ARM_CORE0_LOCAL_SYS_PWR_REG	0x1004
 #define EXYNOS3_DIS_IRQ_ARM_CORE0_CENTRAL_SYS_PWR_REG	0x1008
···
 #define EXYNOS3_OPTION_USE_SC_FEEDBACK			(1 << 1)
 #define EXYNOS3_OPTION_SKIP_DEACTIVATE_ACEACP_IN_PWDN	(1 << 7)
 
-/* For EXYNOS5 */
+/* For Exynos5 */
 
 #define EXYNOS5_AUTO_WDTRESET_DISABLE				0x0408
 #define EXYNOS5_MASK_WDTRESET_REQUEST				0x040C
···
 
 #define EXYNOS5420_SWRESET_KFC_SEL				0x3
 
-/* Only for EXYNOS5420 */
+/* Only for Exynos5420 */
 #define EXYNOS5420_L2RSTDISABLE_VALUE				BIT(3)
 
 #define EXYNOS5420_LPI_MASK					0x0004
···
 					 | EXYNOS5420_KFC_USE_STANDBY_WFI2  \
 					 | EXYNOS5420_KFC_USE_STANDBY_WFI3)
 
-/* For EXYNOS5433 */
+/* For Exynos5433 */
 #define EXYNOS5433_EINT_WAKEUP_MASK				(0x060C)
 #define EXYNOS5433_USBHOST30_PHY_CONTROL			(0x0728)
 #define EXYNOS5433_PAD_RETENTION_AUD_OPTION			(0x3028)

include/soc/fsl/cpm.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __CPM_H
+#define __CPM_H
+
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/of.h>
+#include <soc/fsl/qe/qe.h>
+
+/*
+ * SPI Parameter RAM common to QE and CPM.
+ */
+struct spi_pram {
+	__be16	rbase;	/* Rx Buffer descriptor base address */
+	__be16	tbase;	/* Tx Buffer descriptor base address */
+	u8	rfcr;	/* Rx function code */
+	u8	tfcr;	/* Tx function code */
+	__be16	mrblr;	/* Max receive buffer length */
+	__be32	rstate;	/* Internal */
+	__be32	rdp;	/* Internal */
+	__be16	rbptr;	/* Internal */
+	__be16	rbc;	/* Internal */
+	__be32	rxtmp;	/* Internal */
+	__be32	tstate;	/* Internal */
+	__be32	tdp;	/* Internal */
+	__be16	tbptr;	/* Internal */
+	__be16	tbc;	/* Internal */
+	__be32	txtmp;	/* Internal */
+	__be32	res;	/* Tx temp. */
+	__be16  rpbase;	/* Relocation pointer (CPM1 only) */
+	__be16	res1;	/* Reserved */
+};
+
+/*
+ * USB Controller pram common to QE and CPM.
+ */
+struct usb_ctlr {
+	u8	usb_usmod;
+	u8	usb_usadr;
+	u8	usb_uscom;
+	u8	res1[1];
+	__be16	usb_usep[4];
+	u8	res2[4];
+	__be16	usb_usber;
+	u8	res3[2];
+	__be16	usb_usbmr;
+	u8	res4[1];
+	u8	usb_usbs;
+	/* Fields down below are QE-only */
+	__be16	usb_ussft;
+	u8	res5[2];
+	__be16	usb_usfrn;
+	u8	res6[0x22];
+} __attribute__ ((packed));
+
+/*
+ * Function code bits, usually generic to devices.
+ */
+#ifdef CONFIG_CPM1
+#define CPMFCR_GBL	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
+#define CPMFCR_TC2	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
+#define CPMFCR_DTB	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
+#define CPMFCR_BDB	((u_char)0x00)	/* Flag doesn't exist in CPM1 */
+#else
+#define CPMFCR_GBL	((u_char)0x20)	/* Set memory snooping */
+#define CPMFCR_TC2	((u_char)0x04)	/* Transfer code 2 value */
+#define CPMFCR_DTB	((u_char)0x02)	/* Use local bus for data when set */
+#define CPMFCR_BDB	((u_char)0x01)	/* Use local bus for BD when set */
+#endif
+#define CPMFCR_EB	((u_char)0x10)	/* Set big endian byte order */
+
+/* Opcodes common to CPM1 and CPM2
+*/
+#define CPM_CR_INIT_TRX		((ushort)0x0000)
+#define CPM_CR_INIT_RX		((ushort)0x0001)
+#define CPM_CR_INIT_TX		((ushort)0x0002)
+#define CPM_CR_HUNT_MODE	((ushort)0x0003)
+#define CPM_CR_STOP_TX		((ushort)0x0004)
+#define CPM_CR_GRA_STOP_TX	((ushort)0x0005)
+#define CPM_CR_RESTART_TX	((ushort)0x0006)
+#define CPM_CR_CLOSE_RX_BD	((ushort)0x0007)
+#define CPM_CR_SET_GADDR	((ushort)0x0008)
+#define CPM_CR_SET_TIMER	((ushort)0x0008)
+#define CPM_CR_STOP_IDMA	((ushort)0x000b)
+
+/* Buffer descriptors used by many of the CPM protocols. */
+typedef struct cpm_buf_desc {
+	ushort	cbd_sc;		/* Status and Control */
+	ushort	cbd_datlen;	/* Data length in buffer */
+	uint	cbd_bufaddr;	/* Buffer address in host memory */
+} cbd_t;
+
+/* Buffer descriptor control/status used by serial
+ */
+
+#define BD_SC_EMPTY	(0x8000)	/* Receive is empty */
+#define BD_SC_READY	(0x8000)	/* Transmit is ready */
+#define BD_SC_WRAP	(0x2000)	/* Last buffer descriptor */
+#define BD_SC_INTRPT	(0x1000)	/* Interrupt on change */
+#define BD_SC_LAST	(0x0800)	/* Last buffer in frame */
+#define BD_SC_TC	(0x0400)	/* Transmit CRC */
+#define BD_SC_CM	(0x0200)	/* Continuous mode */
+#define BD_SC_ID	(0x0100)	/* Rec'd too many idles */
+#define BD_SC_P		(0x0100)	/* xmt preamble */
+#define BD_SC_BR	(0x0020)	/* Break received */
+#define BD_SC_FR	(0x0010)	/* Framing error */
+#define BD_SC_PR	(0x0008)	/* Parity error */
+#define BD_SC_NAK	(0x0004)	/* NAK - did not respond */
+#define BD_SC_OV	(0x0002)	/* Overrun */
+#define BD_SC_UN	(0x0002)	/* Underrun */
+#define BD_SC_CD	(0x0001)	/* */
+#define BD_SC_CL	(0x0001)	/* Collision */
+
+/* Buffer descriptor control/status used by Ethernet receive.
+ * Common to SCC and FCC.
+ */
+#define BD_ENET_RX_EMPTY	(0x8000)
+#define BD_ENET_RX_WRAP		(0x2000)
+#define BD_ENET_RX_INTR		(0x1000)
+#define BD_ENET_RX_LAST		(0x0800)
+#define BD_ENET_RX_FIRST	(0x0400)
+#define BD_ENET_RX_MISS		(0x0100)
+#define BD_ENET_RX_BC		(0x0080)	/* FCC Only */
+#define BD_ENET_RX_MC		(0x0040)	/* FCC Only */
+#define BD_ENET_RX_LG		(0x0020)
+#define BD_ENET_RX_NO		(0x0010)
+#define BD_ENET_RX_SH		(0x0008)
+#define BD_ENET_RX_CR		(0x0004)
+#define BD_ENET_RX_OV		(0x0002)
+#define BD_ENET_RX_CL		(0x0001)
+#define BD_ENET_RX_STATS	(0x01ff)	/* All status bits */
+
+/* Buffer descriptor control/status used by Ethernet transmit.
+ * Common to SCC and FCC.
+ */
+#define BD_ENET_TX_READY	(0x8000)
+#define BD_ENET_TX_PAD		(0x4000)
+#define BD_ENET_TX_WRAP		(0x2000)
+#define BD_ENET_TX_INTR		(0x1000)
+#define BD_ENET_TX_LAST		(0x0800)
+#define BD_ENET_TX_TC		(0x0400)
+#define BD_ENET_TX_DEF		(0x0200)
+#define BD_ENET_TX_HB		(0x0100)
+#define BD_ENET_TX_LC		(0x0080)
+#define BD_ENET_TX_RL		(0x0040)
+#define BD_ENET_TX_RCMASK	(0x003c)
+#define BD_ENET_TX_UN		(0x0002)
+#define BD_ENET_TX_CSL		(0x0001)
+#define BD_ENET_TX_STATS	(0x03ff)	/* All status bits */
+
+/* Buffer descriptor control/status used by Transparent mode SCC.
+ */
+#define BD_SCC_TX_LAST		(0x0800)
+
+/* Buffer descriptor control/status used by I2C.
+ */
+#define BD_I2C_START		(0x0400)
+
+#ifdef CONFIG_CPM
+int cpm_command(u32 command, u8 opcode);
+#else
+static inline int cpm_command(u32 command, u8 opcode)
+{
+	return -ENOSYS;
+}
+#endif /* CONFIG_CPM */
+
+int cpm2_gpiochip_add32(struct device *dev);
+
+#endif

include/soc/fsl/qe/qe.h

···
 #include <linux/spinlock.h>
 #include <linux/errno.h>
 #include <linux/err.h>
-#include <asm/cpm.h>
+#include <soc/fsl/cpm.h>
 #include <soc/fsl/qe/immap_qe.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
···
 int cpm_muram_init(void);
 
 #if defined(CONFIG_CPM) || defined(CONFIG_QUICC_ENGINE)
-unsigned long cpm_muram_alloc(unsigned long size, unsigned long align);
-int cpm_muram_free(unsigned long offset);
-unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size);
+s32 cpm_muram_alloc(unsigned long size, unsigned long align);
+void cpm_muram_free(s32 offset);
+s32 cpm_muram_alloc_fixed(unsigned long offset, unsigned long size);
 void __iomem *cpm_muram_addr(unsigned long offset);
 unsigned long cpm_muram_offset(void __iomem *addr);
 dma_addr_t cpm_muram_dma(void __iomem *addr);
 #else
-static inline unsigned long cpm_muram_alloc(unsigned long size,
-					    unsigned long align)
+static inline s32 cpm_muram_alloc(unsigned long size,
+				  unsigned long align)
 {
 	return -ENOSYS;
 }
 
-static inline int cpm_muram_free(unsigned long offset)
+static inline void cpm_muram_free(s32 offset)
 {
-	return -ENOSYS;
 }
 
-static inline unsigned long cpm_muram_alloc_fixed(unsigned long offset,
-						  unsigned long size)
+static inline s32 cpm_muram_alloc_fixed(unsigned long offset,
+					unsigned long size)
 {
 	return -ENOSYS;
 }
···
 #define qe_muram_offset cpm_muram_offset
 #define qe_muram_dma cpm_muram_dma
 
-#define qe_setbits32(_addr, _v) iowrite32be(ioread32be(_addr) |  (_v), (_addr))
-#define qe_clrbits32(_addr, _v) iowrite32be(ioread32be(_addr) & ~(_v), (_addr))
+#ifdef CONFIG_PPC32
+#define qe_iowrite8(val, addr)     out_8(addr, val)
+#define qe_iowrite16be(val, addr)  out_be16(addr, val)
+#define qe_iowrite32be(val, addr)  out_be32(addr, val)
+#define qe_ioread8(addr)           in_8(addr)
+#define qe_ioread16be(addr)        in_be16(addr)
+#define qe_ioread32be(addr)        in_be32(addr)
+#else
+#define qe_iowrite8(val, addr)     iowrite8(val, addr)
+#define qe_iowrite16be(val, addr)  iowrite16be(val, addr)
+#define qe_iowrite32be(val, addr)  iowrite32be(val, addr)
+#define qe_ioread8(addr)           ioread8(addr)
+#define qe_ioread16be(addr)        ioread16be(addr)
+#define qe_ioread32be(addr)        ioread32be(addr)
+#endif
 
-#define qe_setbits16(_addr, _v) iowrite16be(ioread16be(_addr) |  (_v), (_addr))
-#define qe_clrbits16(_addr, _v) iowrite16be(ioread16be(_addr) & ~(_v), (_addr))
+#define qe_setbits_be32(_addr, _v) qe_iowrite32be(qe_ioread32be(_addr) |  (_v), (_addr))
+#define qe_clrbits_be32(_addr, _v) qe_iowrite32be(qe_ioread32be(_addr) & ~(_v), (_addr))
 
-#define qe_setbits8(_addr, _v) iowrite8(ioread8(_addr) |  (_v), (_addr))
-#define qe_clrbits8(_addr, _v) iowrite8(ioread8(_addr) & ~(_v), (_addr))
+#define qe_setbits_be16(_addr, _v) qe_iowrite16be(qe_ioread16be(_addr) |  (_v), (_addr))
+#define qe_clrbits_be16(_addr, _v) qe_iowrite16be(qe_ioread16be(_addr) & ~(_v), (_addr))
 
-#define qe_clrsetbits32(addr, clear, set) \
-	iowrite32be((ioread32be(addr) & ~(clear)) | (set), (addr))
-#define qe_clrsetbits16(addr, clear, set) \
-	iowrite16be((ioread16be(addr) & ~(clear)) | (set), (addr))
-#define qe_clrsetbits8(addr, clear, set) \
-	iowrite8((ioread8(addr) & ~(clear)) | (set), (addr))
+#define qe_setbits_8(_addr, _v) qe_iowrite8(qe_ioread8(_addr) |  (_v), (_addr))
+#define qe_clrbits_8(_addr, _v) qe_iowrite8(qe_ioread8(_addr) & ~(_v), (_addr))
+
+#define qe_clrsetbits_be32(addr, clear, set) \
+	qe_iowrite32be((qe_ioread32be(addr) & ~(clear)) | (set), (addr))
+#define qe_clrsetbits_be16(addr, clear, set) \
+	qe_iowrite16be((qe_ioread16be(addr) & ~(clear)) | (set), (addr))
+#define qe_clrsetbits_8(addr, clear, set) \
+	qe_iowrite8((qe_ioread8(addr) & ~(clear)) | (set), (addr))
 
 /* Structure that defines QE firmware binary files.
  *

include/soc/fsl/qe/qe_ic.h

···
-/* SPDX-License-Identifier: GPL-2.0-or-later */
-/*
- * Copyright (C) 2006 Freescale Semiconductor, Inc. All rights reserved.
- *
- * Authors: 	Shlomi Gridish <[e-mail]>
- * 		Li Yang <[e-mail]>
- *
- * Description:
- * QE IC external definitions and structure.
- */
-#ifndef _ASM_POWERPC_QE_IC_H
-#define _ASM_POWERPC_QE_IC_H
-
-#include <linux/irq.h>
-
-struct device_node;
-struct qe_ic;
-
-#define NUM_OF_QE_IC_GROUPS	6
-
-/* Flags when we init the QE IC */
-#define QE_IC_SPREADMODE_GRP_W			0x00000001
-#define QE_IC_SPREADMODE_GRP_X			0x00000002
-#define QE_IC_SPREADMODE_GRP_Y			0x00000004
-#define QE_IC_SPREADMODE_GRP_Z			0x00000008
-#define QE_IC_SPREADMODE_GRP_RISCA		0x00000010
-#define QE_IC_SPREADMODE_GRP_RISCB		0x00000020
-
-#define QE_IC_LOW_SIGNAL			0x00000100
-#define QE_IC_HIGH_SIGNAL			0x00000200
-
-#define QE_IC_GRP_W_PRI0_DEST_SIGNAL_HIGH	0x00001000
-#define QE_IC_GRP_W_PRI1_DEST_SIGNAL_HIGH	0x00002000
-#define QE_IC_GRP_X_PRI0_DEST_SIGNAL_HIGH	0x00004000
-#define QE_IC_GRP_X_PRI1_DEST_SIGNAL_HIGH	0x00008000
-#define QE_IC_GRP_Y_PRI0_DEST_SIGNAL_HIGH	0x00010000
-#define QE_IC_GRP_Y_PRI1_DEST_SIGNAL_HIGH	0x00020000
-#define QE_IC_GRP_Z_PRI0_DEST_SIGNAL_HIGH	0x00040000
-#define QE_IC_GRP_Z_PRI1_DEST_SIGNAL_HIGH	0x00080000
-#define QE_IC_GRP_RISCA_PRI0_DEST_SIGNAL_HIGH	0x00100000
-#define QE_IC_GRP_RISCA_PRI1_DEST_SIGNAL_HIGH	0x00200000
-#define QE_IC_GRP_RISCB_PRI0_DEST_SIGNAL_HIGH	0x00400000
-#define QE_IC_GRP_RISCB_PRI1_DEST_SIGNAL_HIGH	0x00800000
-#define QE_IC_GRP_W_DEST_SIGNAL_SHIFT		(12)
-
-/* QE interrupt sources groups */
-enum qe_ic_grp_id {
-	QE_IC_GRP_W = 0,	/* QE interrupt controller group W */
-	QE_IC_GRP_X,		/* QE interrupt controller group X */
-	QE_IC_GRP_Y,		/* QE interrupt controller group Y */
-	QE_IC_GRP_Z,		/* QE interrupt controller group Z */
-	QE_IC_GRP_RISCA,	/* QE interrupt controller RISC group A */
-	QE_IC_GRP_RISCB		/* QE interrupt controller RISC group B */
-};
-
-#ifdef CONFIG_QUICC_ENGINE
-void qe_ic_init(struct device_node *node, unsigned int flags,
-		void (*low_handler)(struct irq_desc *desc),
-		void (*high_handler)(struct irq_desc *desc));
-unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic);
-unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic);
-#else
-static inline void qe_ic_init(struct device_node *node, unsigned int flags,
-		void (*low_handler)(struct irq_desc *desc),
-		void (*high_handler)(struct irq_desc *desc))
-{}
-static inline unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic)
-{ return 0; }
-static inline unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
-{ return 0; }
-#endif /* CONFIG_QUICC_ENGINE */
-
-void qe_ic_set_highest_priority(unsigned int virq, int high);
-int qe_ic_set_priority(unsigned int virq, unsigned int priority);
-int qe_ic_set_high_priority(unsigned int virq, unsigned int priority, int high);
-
-static inline void qe_ic_cascade_low_ipic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-}
-
-static inline void qe_ic_cascade_high_ipic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-}
-
-static inline void qe_ic_cascade_low_mpic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_low_irq(qe_ic);
-	struct irq_chip *chip = irq_desc_get_chip(desc);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-
-	chip->irq_eoi(&desc->irq_data);
-}
-
-static inline void qe_ic_cascade_high_mpic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq = qe_ic_get_high_irq(qe_ic);
-	struct irq_chip *chip = irq_desc_get_chip(desc);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-
-	chip->irq_eoi(&desc->irq_data);
-}
-
-static inline void qe_ic_cascade_muxed_mpic(struct irq_desc *desc)
-{
-	struct qe_ic *qe_ic = irq_desc_get_handler_data(desc);
-	unsigned int cascade_irq;
-	struct irq_chip *chip = irq_desc_get_chip(desc);
-
-	cascade_irq = qe_ic_get_high_irq(qe_ic);
-	if (cascade_irq == NO_IRQ)
-		cascade_irq = qe_ic_get_low_irq(qe_ic);
-
-	if (cascade_irq != NO_IRQ)
-		generic_handle_irq(cascade_irq);
-
-	chip->irq_eoi(&desc->irq_data);
-}
-
-#endif /* _ASM_POWERPC_QE_IC_H */

include/soc/fsl/qe/ucc_fast.h

···
 	int stopped_tx;		/* Whether channel has been stopped for Tx
 				   (STOP_TX, etc.) */
 	int stopped_rx;		/* Whether channel has been stopped for Rx */
-	u32 ucc_fast_tx_virtual_fifo_base_offset;/* pointer to base of Tx
+	s32 ucc_fast_tx_virtual_fifo_base_offset;/* pointer to base of Tx
 						    virtual fifo */
-	u32 ucc_fast_rx_virtual_fifo_base_offset;/* pointer to base of Rx
+	s32 ucc_fast_rx_virtual_fifo_base_offset;/* pointer to base of Rx
 						    virtual fifo */
 #ifdef STATISTICS
 	u32 tx_frames;		/* Transmitted frames counter. */

include/soc/fsl/qe/ucc_slow.h

···
 	struct ucc_slow_info *us_info;
 	struct ucc_slow __iomem *us_regs; /* Ptr to memory map of UCC regs */
 	struct ucc_slow_pram *us_pram;	/* a pointer to the parameter RAM */
-	u32 us_pram_offset;
+	s32 us_pram_offset;
 	int enabled_tx;		/* Whether channel is enabled for Tx (ENT) */
 	int enabled_rx;		/* Whether channel is enabled for Rx (ENR) */
 	int stopped_tx;		/* Whether channel has been stopped for Tx
···
 	struct list_head confQ;	/* frames passed to chip waiting for tx */
 	u32 first_tx_bd_mask;	/* mask is used in Tx routine to save status
 				   and length for first BD in a frame */
-	u32 tx_base_offset;	/* first BD in Tx BD table offset (In MURAM) */
-	u32 rx_base_offset;	/* first BD in Rx BD table offset (In MURAM) */
+	s32 tx_base_offset;	/* first BD in Tx BD table offset (In MURAM) */
+	s32 rx_base_offset;	/* first BD in Rx BD table offset (In MURAM) */
 	struct qe_bd *confBd;	/* next BD for confirm after Tx */
 	struct qe_bd *tx_bd;	/* next BD for new Tx request */
 	struct qe_bd *rx_bd;	/* next BD to collect after Rx */

include/trace/events/scmi.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM scmi
+
+#if !defined(_TRACE_SCMI_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SCMI_H
+
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(scmi_xfer_begin,
+	TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
+		 bool poll),
+	TP_ARGS(transfer_id, msg_id, protocol_id, seq, poll),
+
+	TP_STRUCT__entry(
+		__field(int, transfer_id)
+		__field(u8, msg_id)
+		__field(u8, protocol_id)
+		__field(u16, seq)
+		__field(bool, poll)
+	),
+
+	TP_fast_assign(
+		__entry->transfer_id = transfer_id;
+		__entry->msg_id = msg_id;
+		__entry->protocol_id = protocol_id;
+		__entry->seq = seq;
+		__entry->poll = poll;
+	),
+
+	TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u poll=%u",
+		__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
+		__entry->seq, __entry->poll)
+);
+
+TRACE_EVENT(scmi_xfer_end,
+	TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
+		 u32 status),
+	TP_ARGS(transfer_id, msg_id, protocol_id, seq, status),
+
+	TP_STRUCT__entry(
+		__field(int, transfer_id)
+		__field(u8, msg_id)
+		__field(u8, protocol_id)
+		__field(u16, seq)
+		__field(u32, status)
+	),
+
+	TP_fast_assign(
+		__entry->transfer_id = transfer_id;
+		__entry->msg_id = msg_id;
+		__entry->protocol_id = protocol_id;
+		__entry->seq = seq;
+		__entry->status = status;
+	),
+
+	TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u status=%u",
+		__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
+		__entry->seq, __entry->status)
+);
+
+TRACE_EVENT(scmi_rx_done,
+	TP_PROTO(int transfer_id, u8 msg_id, u8 protocol_id, u16 seq,
+		 u8 msg_type),
+	TP_ARGS(transfer_id, msg_id, protocol_id, seq, msg_type),
+
+	TP_STRUCT__entry(
+		__field(int, transfer_id)
+		__field(u8, msg_id)
+		__field(u8, protocol_id)
+		__field(u16, seq)
+		__field(u8, msg_type)
+	),
+
+	TP_fast_assign(
+		__entry->transfer_id = transfer_id;
+		__entry->msg_id = msg_id;
+		__entry->protocol_id = protocol_id;
+		__entry->seq = seq;
+		__entry->msg_type = msg_type;
+	),
+
+	TP_printk("transfer_id=%d msg_id=%u protocol_id=%u seq=%u msg_type=%u",
+		__entry->transfer_id, __entry->msg_id, __entry->protocol_id,
+		__entry->seq, __entry->msg_type)
+);
+#endif /* _TRACE_SCMI_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>