Merge tag 'arm-soc-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC updates from Olof Johansson:
"A few SoC (code) changes have queued up this cycle, mostly for minor
changes and some refactoring and cleanup of legacy platforms. This
branch also contains a few of the fixes that weren't sent in by the
end of the release (all fairly minor).

- Adding an additional maintainer for the TEE subsystem (Sumit Garg)

- Quite a significant modernization of the IXP4xx platforms by Linus
Walleij, revisiting with a new PCI host driver/binding, removing
legacy mach/* include dependencies and moving platform
detection/config to drivers/soc. Also some updates/cleanup of
platform data.

- Core power domain support for Tegra platforms, and some
improvements in build test coverage by adding stubs for compile
test targets.

- A handful of updates to i.MX platforms, adding legacy (non-PSCI)
SMP support on i.MX7D, SoC ID setup for i.MX50, removal of platform
data and board fixups for iMX6/7.

... and a few smaller changes and fixes for Samsung, OMAP, Allwinner,
Rockchip"

* tag 'arm-soc-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (53 commits)
MAINTAINERS: Add myself as TEE subsystem reviewer
ixp4xx: fix spelling mistake in Kconfig "Devce" -> "Device"
hw_random: ixp4xx: Add OF support
hw_random: ixp4xx: Add DT bindings
hw_random: ixp4xx: Turn into a module
hw_random: ixp4xx: Use SPDX license tag
hw_random: ixp4xx: enable compile-testing
pata: ixp4xx: split platform data to its own header
soc: ixp4xx: move cpu detection to linux/soc/ixp4xx/cpu.h
PCI: ixp4xx: Add a new driver for IXP4xx
PCI: ixp4xx: Add device tree bindings for IXP4xx
ARM/ixp4xx: Make NEED_MACH_IO_H optional
ARM/ixp4xx: Move the virtual IObases
MAINTAINERS: ARM/MStar/Sigmastar SoCs: Add a link to the MStar tree
ARM: debug: add UART early console support for MSTAR SoCs
ARM: dts: ux500: Fix LED probing
ARM: imx: add smp support for imx7d
ARM: imx6q: drop of_platform_default_populate() from init_machine
arm64: dts: rockchip: Update RK3399 PCI host bridge window to 32-bit address memory
soc/tegra: fuse: Fix Tegra234-only builds
...

Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/intel,ixp4xx-pci.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel IXP4xx PCI controller
+
+maintainers:
+  - Linus Walleij <[e-mail]>
+
+description: PCI host controller found in the Intel IXP4xx SoC series.
+
+allOf:
+  - $ref: /schemas/pci/pci-bus.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - intel,ixp42x-pci
+          - intel,ixp43x-pci
+    description: The two supported variants are ixp42x and ixp43x,
+      though more variants may exist.
+
+  reg:
+    items:
+      - description: IXP4xx-specific registers
+
+  interrupts:
+    items:
+      - description: Main PCI interrupt
+      - description: PCI DMA interrupt 1
+      - description: PCI DMA interrupt 2
+
+  ranges:
+    maxItems: 2
+    description: Typically one memory range of 64MB and one IO
+      space range of 64KB.
+
+  dma-ranges:
+    maxItems: 1
+    description: The DMA range tells the PCI host which addresses
+      the RAM is at. It can map only 64MB so if the RAM is bigger
+      than 64MB the DMA access has to be restricted to these
+      addresses.
+
+  "#interrupt-cells": true
+
+  interrupt-map: true
+
+  interrupt-map-mask:
+    items:
+      - const: 0xf800
+      - const: 0
+      - const: 0
+      - const: 7
+
+required:
+  - compatible
+  - reg
+  - dma-ranges
+  - "#interrupt-cells"
+  - interrupt-map
+  - interrupt-map-mask
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pci@c0000000 {
+      compatible = "intel,ixp43x-pci";
+      reg = <0xc0000000 0x1000>;
+      #address-cells = <3>;
+      #size-cells = <2>;
+      device_type = "pci";
+      bus-range = <0x00 0xff>;
+
+      ranges =
+        <0x02000000 0 0x48000000 0x48000000 0 0x04000000>,
+        <0x01000000 0 0x00000000 0x4c000000 0 0x00010000>;
+      dma-ranges =
+        <0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
+
+      #interrupt-cells = <1>;
+      interrupt-map-mask = <0xf800 0 0 7>;
+      interrupt-map =
+        <0x0800 0 0 1 &gpio0 11 3>, /* INT A on slot 1 is irq 11 */
+        <0x0800 0 0 2 &gpio0 10 3>, /* INT B on slot 1 is irq 10 */
+        <0x0800 0 0 3 &gpio0 9  3>, /* INT C on slot 1 is irq 9 */
+        <0x0800 0 0 4 &gpio0 8  3>, /* INT D on slot 1 is irq 8 */
+        <0x1000 0 0 1 &gpio0 10 3>, /* INT A on slot 2 is irq 10 */
+        <0x1000 0 0 2 &gpio0 9  3>, /* INT B on slot 2 is irq 9 */
+        <0x1000 0 0 3 &gpio0 8  3>, /* INT C on slot 2 is irq 8 */
+        <0x1000 0 0 4 &gpio0 11 3>, /* INT D on slot 2 is irq 11 */
+        <0x1800 0 0 1 &gpio0 9  3>, /* INT A on slot 3 is irq 9 */
+        <0x1800 0 0 2 &gpio0 8  3>, /* INT B on slot 3 is irq 8 */
+        <0x1800 0 0 3 &gpio0 11 3>, /* INT C on slot 3 is irq 11 */
+        <0x1800 0 0 4 &gpio0 10 3>; /* INT D on slot 3 is irq 10 */
+    };

Documentation/devicetree/bindings/rng/intel,ixp46x-rng.yaml

···
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rng/intel,ixp46x-rng.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel IXP46x RNG bindings
+
+description: |
+  The Intel IXP46x has a random number generator at a fixed physical
+  location in memory. Each read is guaranteed to provide a unique
+  32 bit random number.
+
+maintainers:
+  - Linus Walleij <[e-mail]>
+
+properties:
+  compatible:
+    const: intel,ixp46x-rng
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    rng@70002100 {
+      compatible = "intel,ixp46x-rng";
+      reg = <0x70002100 4>;
+    };
+

MAINTAINERS

···
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
 W:	http://linux-chenxing.org/
+T:	git git://github.com/linux-chenxing/linux.git
 F:	Documentation/devicetree/bindings/arm/mstar/*
 F:	Documentation/devicetree/bindings/clock/mstar,msc313-mpll.yaml
 F:	Documentation/devicetree/bindings/gpio/mstar,msc313-gpio.yaml
···
 F:	drivers/*/*s3c24*
 F:	drivers/*/*s3c64xx*
 F:	drivers/*/*s5pv210*
+F:	drivers/clocksource/samsung_pwm_timer.c
 F:	drivers/memory/samsung/
+F:	drivers/pwm/pwm-samsung.c
 F:	drivers/soc/samsung/
 F:	drivers/tty/serial/samsung*
+F:	include/clocksource/samsung_pwm.h
 F:	include/linux/platform_data/*s3c*
 F:	include/linux/serial_s3c.h
 F:	include/linux/soc/samsung/
···
 INTEL IXP4XX RANDOM NUMBER GENERATOR SUPPORT
 M:	Deepak Saxena <[e-mail]>
 S:	Maintained
+F:	Documentation/devicetree/bindings/display/intel,ixp46x-rng.yaml
 F:	drivers/char/hw_random/ixp4xx-rng.c
 
 INTEL KEEM BAY DRM DRIVER
···
 S:	Maintained
 F:	arch/arm/mach-omap2/omap_hwmod*data*
 
-OMAP HWMOD DATA FOR OMAP4-BASED DEVICES
-M:	Benoît Cousson <[e-mail]>
-L:	[e-mail]
-S:	Maintained
-F:	arch/arm/mach-omap2/omap_hwmod_44xx_data.c
-
 OMAP HWMOD SUPPORT
 M:	Benoît Cousson <[e-mail]>
 M:	Paul Walmsley <[e-mail]>
···
 S:	Maintained
 F:	Documentation/devicetree/bindings/pci/sifive,fu740-pcie.yaml
 F:	drivers/pci/controller/dwc/pcie-fu740.c
+
+PCI DRIVER FOR INTEL IXP4XX
+M:	Linus Walleij <[e-mail]>
+S:	Maintained
+F:	Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml
+F:	drivers/pci/controller/pci-ixp4xx.c
 
 PCI DRIVER FOR INTEL VOLUME MANAGEMENT DEVICE (VMD)
 M:	Jonathan Derrick <[e-mail]>
···
 
 TEE SUBSYSTEM
 M:	Jens Wiklander <[e-mail]>
+R:	Sumit Garg <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 F:	Documentation/staging/tee.rst

arch/arm/Kconfig

···
 	select HAVE_PCI
 	select IXP4XX_IRQ
 	select IXP4XX_TIMER
-	select NEED_MACH_IO_H
+	# With the new PCI driver this is not needed
+	select NEED_MACH_IO_H if PCI_IXP4XX_LEGACY
 	select USB_EHCI_BIG_ENDIAN_DESC
 	select USB_EHCI_BIG_ENDIAN_MMIO
 	help

arch/arm/Kconfig.debug

···
 		  when u-boot hands over to the kernel, the system
 		  silently crashes, with no serial output at all.
 
+	config DEBUG_MSTARV7_PMUART
+		bool "Kernel low-level debugging messages via MSTARV7 PM UART"
+		depends on ARCH_MSTARV7
+		select DEBUG_UART_8250
+		help
+		  Say Y here if you want kernel low-level debugging support
+		  for MSTAR ARMv7-based platforms on PM UART.
+
 	config DEBUG_MT6589_UART0
 		bool "Mediatek mt6589 UART0"
 		depends on ARCH_MEDIATEK
···
 	default 0x18000400 if DEBUG_BCM_HR2
 	default 0x18023000 if DEBUG_BCM_IPROC_UART3
 	default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1
+	default 0x1f221000 if DEBUG_MSTARV7_PMUART
 	default 0x20001000 if DEBUG_HIP01_UART
 	default 0x20060000 if DEBUG_RK29_UART0
 	default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2
···
 	default 0xf0100000 if DEBUG_DIGICOLOR_UA0
 	default 0xf01fb000 if DEBUG_NOMADIK_UART
 	default 0xf0201000 if DEBUG_BCM2835 || DEBUG_BCM2836
+	default 0xf0221000 if DEBUG_MSTARV7_PMUART
 	default 0xf1000300 if DEBUG_BCM_5301X
 	default 0xf1000400 if DEBUG_BCM_HR2
 	default 0xf1002000 if DEBUG_MT8127_UART0
···
 	default 0xfedc0000 if DEBUG_EP93XX
 	default 0xfee003f8 if DEBUG_FOOTBRIDGE_COM1
 	default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART
-	default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
-	default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
+	default 0xfec00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN
+	default 0xfec00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN
 	default 0xfef36000 if DEBUG_HIGHBANK_UART
 	default 0xfefb0000 if DEBUG_OMAP1UART1 || DEBUG_OMAP7XXUART1
 	default 0xfefb0800 if DEBUG_OMAP1UART2 || DEBUG_OMAP7XXUART2
···
 	default 0 if DEBUG_FOOTBRIDGE_COM1 || ARCH_IOP32X || DEBUG_BCM_5301X || \
 		DEBUG_BCM_HR2 || DEBUG_OMAP7XXUART1 || DEBUG_OMAP7XXUART2 || \
 		DEBUG_OMAP7XXUART3
+	default 3 if DEBUG_MSTARV7_PMUART
 	default 2
 
 config DEBUG_UART_8250_WORD

arch/arm/boot/dts/am5718.dtsi

···
  * VCP1, VCP2
  * MLB
  * ISS
- * USB3, USB4
+ * USB3
  */
 
 &usb3_tm {
-	status = "disabled";
-};
-
-&usb4_tm {
 	status = "disabled";
 };
 

arch/arm/boot/dts/dra7-l4.dtsi

···
 			};
 		};
 
-		usb4_tm: target-module@140000 {		/* 0x48940000, ap 75 3c.0 */
-			compatible = "ti,sysc-omap4", "ti,sysc";
-			reg = <0x140000 0x4>,
-			      <0x140010 0x4>;
-			reg-names = "rev", "sysc";
-			ti,sysc-mask = <SYSC_OMAP4_DMADISABLE>;
-			ti,sysc-midle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			/* Domains (P, C): l3init_pwrdm, l3init_clkdm */
-			clocks = <&l3init_clkctrl DRA7_L3INIT_USB_OTG_SS4_CLKCTRL 0>;
-			clock-names = "fck";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			ranges = <0x0 0x140000 0x20000>;
-		};
-
 		target-module@170000 {			/* 0x48970000, ap 21 0a.0 */
 			compatible = "ti,sysc-omap4", "ti,sysc";
 			reg = <0x170010 0x4>;

arch/arm/boot/dts/dra71x.dtsi

···
 &rtctarget {
 	status = "disabled";
 };
-
-&usb4_tm {
-	status = "disabled";
-};

arch/arm/boot/dts/dra72x.dtsi

···
 &pcie2_rc {
 	compatible = "ti,dra726-pcie-rc", "ti,dra7-pcie";
 };
-
-&usb4_tm {
-	status = "disabled";
-};

arch/arm/boot/dts/dra74x.dtsi

···
 			reg = <0x41500000 0x100>;
 		};
 
-		target-module@48940000 {
-			compatible = "ti,sysc-omap4", "ti,sysc";
-			reg = <0x48940000 0x4>,
-			      <0x48940010 0x4>;
-			reg-names = "rev", "sysc";
-			ti,sysc-mask = <SYSC_OMAP4_DMADISABLE>;
-			ti,sysc-midle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
-					<SYSC_IDLE_NO>,
-					<SYSC_IDLE_SMART>,
-					<SYSC_IDLE_SMART_WKUP>;
-			clocks = <&l3init_clkctrl DRA7_L3INIT_USB_OTG_SS4_CLKCTRL 0>;
-			clock-names = "fck";
-			#address-cells = <1>;
-			#size-cells = <1>;
-			ranges = <0x0 0x48940000 0x20000>;
-
-			omap_dwc3_4: omap_dwc3_4@0 {
-				compatible = "ti,dwc3";
-				reg = <0 0x10000>;
-				interrupts = <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>;
-				#address-cells = <1>;
-				#size-cells = <1>;
-				utmi-mode = <2>;
-				ranges;
-				status = "disabled";
-				usb4: usb@10000 {
-					compatible = "snps,dwc3";
-					reg = <0x10000 0x17000>;
-					interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>,
-						     <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>,
-						     <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>;
-					interrupt-names = "peripheral",
-							  "host",
-							  "otg";
-					maximum-speed = "high-speed";
-					dr_mode = "otg";
-				};
-			};
-		};
 
 		target-module@41501000 {
 			compatible = "ti,sysc-omap2", "ti,sysc";
···
 
 &pcie2_rc {
 	compatible = "ti,dra746-pcie-rc", "ti,dra7-pcie";
+};
+
+&l4_per3 {
+	segment@0 {
+		usb4_tm: target-module@140000 {         /* 0x48940000, ap 75 3c.0 */
+			compatible = "ti,sysc-omap4", "ti,sysc";
+			reg = <0x140000 0x4>,
+			      <0x140010 0x4>;
+			reg-names = "rev", "sysc";
+			ti,sysc-mask = <SYSC_OMAP4_DMADISABLE>;
+			ti,sysc-midle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_NO>,
+					<SYSC_IDLE_SMART>,
+					<SYSC_IDLE_SMART_WKUP>;
+			ti,sysc-sidle = <SYSC_IDLE_FORCE>,
+					<SYSC_IDLE_NO>,
+					<SYSC_IDLE_SMART>,
+					<SYSC_IDLE_SMART_WKUP>;
+			/* Domains (P, C): l3init_pwrdm, l3init_clkdm */
+			clocks = <&l3init_clkctrl DRA7_L3INIT_USB_OTG_SS4_CLKCTRL 0>;
+			clock-names = "fck";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x140000 0x20000>;
+
+			omap_dwc3_4: omap_dwc3_4@0 {
+				compatible = "ti,dwc3";
+				reg = <0 0x10000>;
+				interrupts = <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				utmi-mode = <2>;
+				ranges;
+				status = "disabled";
+				usb4: usb@10000 {
+					compatible = "snps,dwc3";
+					reg = <0x10000 0x17000>;
+					interrupts = <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>,
+						     <GIC_SPI 345 IRQ_TYPE_LEVEL_HIGH>,
+						     <GIC_SPI 346 IRQ_TYPE_LEVEL_HIGH>;
+					interrupt-names = "peripheral",
+							  "host",
+							  "otg";
+					maximum-speed = "high-speed";
+					dr_mode = "otg";
+				};
+			};
+		};
+	};
 };

arch/arm/boot/dts/qcom-sdx55-t55.dts

···
 		nand-ecc-step-size = <512>;
 		nand-bus-width = <8>;
 		/* efs2 partition is secured */
-		secure-regions = <0x500000 0xb00000>;
+		secure-regions = /bits/ 64 <0x500000 0xb00000>;
 	};
 };
 

arch/arm/boot/dts/qcom-sdx55-telit-fn980-tlb.dts

···
 		nand-ecc-step-size = <512>;
 		nand-bus-width = <8>;
 		/* ico and efs2 partitions are secured */
-		secure-regions = <0x500000 0x500000
-				  0xa00000 0xb00000>;
+		secure-regions = /bits/ 64 <0x500000 0x500000
+					    0xa00000 0xb00000>;
 	};
 };
 

arch/arm/boot/dts/ste-href.dtsi

···
  */
 
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/leds/common.h>
 #include "ste-href-family-pinctrl.dtsi"
 
 / {
···
 					reg = <0>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 					linux,default-trigger = "heartbeat";
 				};
 				chan@1 {
 					reg = <1>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 				};
 				chan@2 {
 					reg = <2>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 				};
 			};
 			lp5521@34 {
···
 					reg = <0>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 				};
 				chan@1 {
 					reg = <1>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 				};
 				chan@2 {
 					reg = <2>;
 					led-cur = /bits/ 8 <0x2f>;
 					max-cur = /bits/ 8 <0x5f>;
+					color = <LED_COLOR_ID_BLUE>;
 				};
 			};
 			bh1780@29 {

arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts

···
 	pinctrl-0 = <&emac_rgmii_pins>;
 	phy-supply = <&reg_gmac_3v3>;
 	phy-handle = <&ext_rgmii_phy>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 
 	status = "okay";
 };

arch/arm/mach-exynos/exynos.c

···
 		sysram_base_addr = of_iomap(node, 0);
 		sysram_base_phys = of_translate_address(node,
 					   of_get_address(node, 0, NULL, NULL));
+		of_node_put(node);
 		break;
 	}
 
···
 		if (!of_device_is_available(node))
 			continue;
 		sysram_ns_base_addr = of_iomap(node, 0);
+		of_node_put(node);
 		break;
 	}
 }

arch/arm/mach-imx/Makefile

···
 obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
 obj-$(CONFIG_HAVE_IMX_MMDC) += mmdc.o
 obj-$(CONFIG_HAVE_IMX_SRC) += src.o
-ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_LS1021A),)
+ifneq ($(CONFIG_SOC_IMX6)$(CONFIG_SOC_IMX7D_CA7)$(CONFIG_SOC_LS1021A),)
 AFLAGS_headsmp.o :=-Wa,-march=armv7-a
 obj-$(CONFIG_SMP) += headsmp.o platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o

arch/arm/mach-imx/common.h

···
 void v7_secondary_startup(void);
 void imx_scu_map_io(void);
 void imx_smp_prepare(void);
+void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn);
 #else
 static inline void imx_scu_map_io(void) {}
 static inline void imx_smp_prepare(void) {}
 #endif
 void imx_src_init(void);
+void imx7_src_init(void);
 void imx_gpc_pre_suspend(bool arm_power_off);
 void imx_gpc_post_resume(void);
 void imx_gpc_mask_all(void);
···
 #endif
 
 extern const struct smp_operations imx_smp_ops;
+extern const struct smp_operations imx7_smp_ops;
 extern const struct smp_operations ls1021a_smp_ops;
 
 #endif

arch/arm/mach-imx/headsmp.S

···
 
 ENTRY(v7_secondary_startup)
 ARM_BE8(setend be)			@ go BE8 if entered LE
+	mrc	p15, 0, r0, c0, c0, 0
+	lsl	r0, r0, #16
+	lsr	r0, r0, #20
+	/* 0xc07 is cortex A7's ID */
+	mov	r1, #0xc00
+	orr	r1, #0x7
+	cmp	r0, r1
+	beq	secondary_startup
+
 	set_diag_reg
 	b	secondary_startup
 ENDPROC(v7_secondary_startup)

arch/arm/mach-imx/hotplug.c

···
 #include <asm/proc-fns.h>
 
 #include "common.h"
+#include "hardware.h"
 
 /*
  * platform-specific code to shutdown a CPU
···
 			return 0;
 	imx_enable_cpu(cpu, false);
 	imx_set_cpu_arg(cpu, 0);
+	if (cpu_is_imx7d())
+		imx_gpcv2_set_core1_pdn_pup_by_software(true);
 	return 1;
 }

arch/arm/mach-imx/mach-imx50.c

···
 #include <asm/mach/arch.h>
 
 #include "common.h"
+#include "hardware.h"
+
+static void __init imx50_init_early(void)
+{
+	mxc_set_cpu_type(MXC_CPU_MX50);
+}
 
 static const char * const imx50_dt_board_compat[] __initconst = {
 	"fsl,imx50",
···
 };
 
 DT_MACHINE_START(IMX50_DT, "Freescale i.MX50 (Device Tree Support)")
+	.init_early	= imx50_init_early,
 	.dt_compat	= imx50_dt_board_compat,
 MACHINE_END

arch/arm/mach-imx/mach-imx6q.c

···
 	return 0;
 }
 
-static void mmd_write_reg(struct phy_device *dev, int device, int reg, int val)
-{
-	phy_write(dev, 0x0d, device);
-	phy_write(dev, 0x0e, reg);
-	phy_write(dev, 0x0d, (1 << 14) | device);
-	phy_write(dev, 0x0e, val);
-}
-
-static int ksz9031rn_phy_fixup(struct phy_device *dev)
-{
-	/*
-	 * min rx data delay, max rx/tx clock delay,
-	 * min rx/tx control delay
-	 */
-	mmd_write_reg(dev, 2, 4, 0);
-	mmd_write_reg(dev, 2, 5, 0);
-	mmd_write_reg(dev, 2, 8, 0x003ff);
-
-	return 0;
-}
-
 /*
  * fixup for PLX PEX8909 bridge to configure GPIO1-7 as output High
  * as they are used for slots1-7 PERST#
···
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8606, ventana_pciesw_early_fixup);
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PLX, 0x8604, ventana_pciesw_early_fixup);
 
-static int ar8031_phy_fixup(struct phy_device *dev)
-{
-	u16 val;
-
-	/* To enable AR8031 output a 125MHz clk from CLK_25M */
-	phy_write(dev, 0xd, 0x7);
-	phy_write(dev, 0xe, 0x8016);
-	phy_write(dev, 0xd, 0x4007);
-
-	val = phy_read(dev, 0xe);
-	val &= 0xffe3;
-	val |= 0x18;
-	phy_write(dev, 0xe, val);
-
-	/* introduce tx clock delay */
-	phy_write(dev, 0x1d, 0x5);
-	val = phy_read(dev, 0x1e);
-	val |= 0x0100;
-	phy_write(dev, 0x1e, val);
-
-	return 0;
-}
-
-#define PHY_ID_AR8031	0x004dd074
-
-static int ar8035_phy_fixup(struct phy_device *dev)
-{
-	u16 val;
-
-	/* Ar803x phy SmartEEE feature cause link status generates glitch,
-	 * which cause ethernet link down/up issue, so disable SmartEEE
-	 */
-	phy_write(dev, 0xd, 0x3);
-	phy_write(dev, 0xe, 0x805d);
-	phy_write(dev, 0xd, 0x4003);
-
-	val = phy_read(dev, 0xe);
-	phy_write(dev, 0xe, val & ~(1 << 8));
-
-	/*
-	 * Enable 125MHz clock from CLK_25M on the AR8031.  This
-	 * is fed in to the IMX6 on the ENET_REF_CLK (V22) pad.
-	 * Also, introduce a tx clock delay.
-	 *
-	 * This is the same as is the AR8031 fixup.
-	 */
-	ar8031_phy_fixup(dev);
-
-	/*check phy power*/
-	val = phy_read(dev, 0x0);
-	if (val & BMCR_PDOWN)
-		phy_write(dev, 0x0, val & ~BMCR_PDOWN);
-
-	return 0;
-}
-
-#define PHY_ID_AR8035 0x004dd072
-
 static void __init imx6q_enet_phy_init(void)
 {
 	if (IS_BUILTIN(CONFIG_PHYLIB)) {
 		phy_register_fixup_for_uid(PHY_ID_KSZ9021, MICREL_PHY_ID_MASK,
 				ksz9021rn_phy_fixup);
-		phy_register_fixup_for_uid(PHY_ID_KSZ9031, MICREL_PHY_ID_MASK,
-				ksz9031rn_phy_fixup);
-		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffef,
-				ar8031_phy_fixup);
-		phy_register_fixup_for_uid(PHY_ID_AR8035, 0xffffffef,
-				ar8035_phy_fixup);
 	}
 }
 
···
 				imx_get_soc_revision());
 
 	imx6q_enet_phy_init();
-
-	of_platform_default_populate(NULL, NULL, NULL);
-
 	imx_anatop_init();
 	cpu_is_imx6q() ?  imx6q_pm_init() : imx6dl_pm_init();
 	imx6q_1588_init();

arch/arm/mach-imx/mach-imx6sx.c

···
 #include "common.h"
 #include "cpuidle.h"
 
-static int ar8031_phy_fixup(struct phy_device *dev)
-{
-	u16 val;
-
-	/* Set RGMII IO voltage to 1.8V */
-	phy_write(dev, 0x1d, 0x1f);
-	phy_write(dev, 0x1e, 0x8);
-
-	/* introduce tx clock delay */
-	phy_write(dev, 0x1d, 0x5);
-	val = phy_read(dev, 0x1e);
-	val |= 0x0100;
-	phy_write(dev, 0x1e, val);
-
-	return 0;
-}
-
-#define PHY_ID_AR8031   0x004dd074
-static void __init imx6sx_enet_phy_init(void)
-{
-	if (IS_BUILTIN(CONFIG_PHYLIB))
-		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
-					   ar8031_phy_fixup);
-}
-
 static void __init imx6sx_enet_clk_sel(void)
 {
 	struct regmap *gpr;
···
 
 static inline void imx6sx_enet_init(void)
 {
-	imx6sx_enet_phy_init();
 	imx6sx_enet_clk_sel();
 }
 

arch/arm/mach-imx/mach-imx7d.c

···
 
 #include "common.h"
 
-static int ar8031_phy_fixup(struct phy_device *dev)
-{
-	u16 val;
-
-	/* Set RGMII IO voltage to 1.8V */
-	phy_write(dev, 0x1d, 0x1f);
-	phy_write(dev, 0x1e, 0x8);
-
-	/* disable phy AR8031 SmartEEE function. */
-	phy_write(dev, 0xd, 0x3);
-	phy_write(dev, 0xe, 0x805d);
-	phy_write(dev, 0xd, 0x4003);
-	val = phy_read(dev, 0xe);
-	val &= ~(0x1 << 8);
-	phy_write(dev, 0xe, val);
-
-	return 0;
-}
-
 static int bcm54220_phy_fixup(struct phy_device *dev)
 {
 	/* enable RXC skew select RGMII copper mode */
···
 	return 0;
 }
 
-#define PHY_ID_AR8031	0x004dd074
 #define PHY_ID_BCM54220	0x600d8589
 
 static void __init imx7d_enet_phy_init(void)
 {
 	if (IS_BUILTIN(CONFIG_PHYLIB)) {
-		phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff,
-					   ar8031_phy_fixup);
 		phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
 					   bcm54220_phy_fixup);
 	}
···
 static void __init imx7d_init_irq(void)
 {
 	imx_init_revision_from_anatop();
-	imx_src_init();
+	imx7_src_init();
 	irqchip_init();
 }
 
···
 };
 
 DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)")
+	.smp            = smp_ops(imx7_smp_ops),
 	.init_irq	= imx7d_init_irq,
 	.init_machine	= imx7d_init_machine,
 	.init_late      = imx7d_init_late,

arch/arm/mach-imx/platsmp.c

···
 #endif
 };
 
+/*
+ * Initialise the CPU possible map early - this describes the CPUs
+ * which may be present or become present in the system.
+ */
+static void __init imx7_smp_init_cpus(void)
+{
+	struct device_node *np;
+	int i, ncores = 0;
+
+	/* The iMX7D SCU does not report core count, get it from DT */
+	for_each_of_cpu_node(np)
+		ncores++;
+
+	for (i = ncores; i < NR_CPUS; i++)
+		set_cpu_possible(i, false);
+}
+
+const struct smp_operations imx7_smp_ops __initconst = {
+	.smp_init_cpus		= imx7_smp_init_cpus,
+	.smp_boot_secondary	= imx_boot_secondary,
+#ifdef CONFIG_HOTPLUG_CPU
+	.cpu_die		= imx_cpu_die,
+	.cpu_kill		= imx_cpu_kill,
+#endif
+};
+
 #define DCFG_CCSR_SCRATCHRW1	0x200
 
 static int ls1021a_boot_secondary(unsigned int cpu, struct task_struct *idle)

arch/arm/mach-imx/src.c

···
 
 #include <linux/init.h>
 #include <linux/io.h>
+#include <linux/iopoll.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/reset-controller.h>
 #include <linux/smp.h>
 #include <asm/smp_plat.h>
 #include "common.h"
+#include "hardware.h"
 
 #define SRC_SCR				0x000
-#define SRC_GPR1			0x020
+#define SRC_GPR1_V1			0x020
+#define SRC_GPR1_V2			0x074
+#define SRC_GPR1(gpr_v2)		((gpr_v2) ? SRC_GPR1_V2 : SRC_GPR1_V1)
 #define BP_SRC_SCR_WARM_RESET_ENABLE	0
 #define BP_SRC_SCR_SW_GPU_RST		1
 #define BP_SRC_SCR_SW_VPU_RST		2
···
 #define BP_SRC_SCR_SW_IPU2_RST		12
 #define BP_SRC_SCR_CORE1_RST		14
 #define BP_SRC_SCR_CORE1_ENABLE		22
+/* below is for i.MX7D */
+#define SRC_A7RCR1			0x008
+#define BP_SRC_A7RCR1_A7_CORE1_ENABLE	1
+#define GPC_CPU_PGC_SW_PUP_REQ		0xf0
+#define GPC_CPU_PGC_SW_PDN_REQ		0xfc
+#define GPC_PGC_C1			0x840
+#define BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7	0x2
 
 static void __iomem *src_base;
 static DEFINE_SPINLOCK(scr_lock);
+static bool gpr_v2;
+static void __iomem *gpc_base;
 
 static const int sw_reset_bits[5] = {
 	BP_SRC_SCR_SW_GPU_RST,
···
 	.nr_resets = ARRAY_SIZE(sw_reset_bits),
 };
 
+static void imx_gpcv2_set_m_core_pgc(bool enable, u32 offset)
+{
+	writel_relaxed(enable, gpc_base + offset);
+}
+
+/*
+ * The motivation for bringing up the second i.MX7D core inside the kernel
+ * is that legacy vendor bootloaders usually do not implement PSCI support.
+ * This is a significant blocker for systems in the field that are running old
+ * bootloader versions to upgrade to a modern mainline kernel version, as only
+ * one CPU of the i.MX7D would be brought up.
+ * Bring up the second i.MX7D core inside the kernel to make the migration
+ * path to mainline kernel easier for the existing iMX7D users.
+ */
+void imx_gpcv2_set_core1_pdn_pup_by_software(bool pdn)
+{
+	u32 reg = pdn ? GPC_CPU_PGC_SW_PDN_REQ : GPC_CPU_PGC_SW_PUP_REQ;
+	u32 val, pup;
+	int ret;
+
+	imx_gpcv2_set_m_core_pgc(true, GPC_PGC_C1);
+	val = readl_relaxed(gpc_base + reg);
+	val |= BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
+	writel_relaxed(val, gpc_base + reg);
+
+	ret = readl_relaxed_poll_timeout_atomic(gpc_base + reg, pup,
+				!(pup & BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7),
+				5, 1000000);
+	if (ret < 0) {
+		pr_err("i.MX7D: CORE1_A7 power up timeout\n");
+		val &= ~BM_CPU_PGC_SW_PDN_PUP_REQ_CORE1_A7;
+		writel_relaxed(val, gpc_base + reg);
+	}
+
+	imx_gpcv2_set_m_core_pgc(false, GPC_PGC_C1);
+}
+
 void imx_enable_cpu(int cpu, bool enable)
 {
 	u32 mask, val;
 
 	cpu = cpu_logical_map(cpu);
-	mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1);
 	spin_lock(&scr_lock);
-	val = readl_relaxed(src_base + SRC_SCR);
-	val = enable ? val | mask : val & ~mask;
-	val |= 1 << (BP_SRC_SCR_CORE1_RST + cpu - 1);
-	writel_relaxed(val, src_base + SRC_SCR);
+	if (gpr_v2) {
+		if (enable)
+			imx_gpcv2_set_core1_pdn_pup_by_software(false);
+
+		mask = 1 << (BP_SRC_A7RCR1_A7_CORE1_ENABLE + cpu - 1);
+		val = readl_relaxed(src_base + SRC_A7RCR1);
+		val = enable ? val | mask : val & ~mask;
+		writel_relaxed(val, src_base + SRC_A7RCR1);
+	} else {
+		mask = 1 << (BP_SRC_SCR_CORE1_ENABLE + cpu - 1);
+		val = readl_relaxed(src_base + SRC_SCR);
+		val = enable ? val | mask : val & ~mask;
+		val |= 1 << (BP_SRC_SCR_CORE1_RST + cpu - 1);
+		writel_relaxed(val, src_base + SRC_SCR);
+	}
 	spin_unlock(&scr_lock);
 }
 
···
 {
 	cpu = cpu_logical_map(cpu);
 	writel_relaxed(__pa_symbol(jump_addr),
-		       src_base + SRC_GPR1 + cpu * 8);
+		       src_base + SRC_GPR1(gpr_v2) + cpu * 8);
 }
 
 u32 imx_get_cpu_arg(int cpu)
 {
 	cpu = cpu_logical_map(cpu);
-	return readl_relaxed(src_base + SRC_GPR1 + cpu * 8 + 4);
+	return readl_relaxed(src_base + SRC_GPR1(gpr_v2) + cpu * 8 + 4);
 }
 
 void imx_set_cpu_arg(int cpu, u32 arg)
 {
 	cpu = cpu_logical_map(cpu);
-	writel_relaxed(arg, src_base + SRC_GPR1 + cpu * 8 + 4);
+	writel_relaxed(arg, src_base + SRC_GPR1(gpr_v2) + cpu * 8 + 4);
 }
 
 void __init imx_src_init(void)
···
 	val &= ~(1 << BP_SRC_SCR_WARM_RESET_ENABLE);
 	writel_relaxed(val, src_base + SRC_SCR);
 	spin_unlock(&scr_lock);
+}
+
+void __init imx7_src_init(void)
+{
+	struct device_node *np;
+
+	gpr_v2 = true;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx7d-src");
+	if (!np)
+		return;
+
+	src_base = of_iomap(np, 0);
+	if (!src_base)
+		return;
+
+	np = of_find_compatible_node(NULL, NULL, "fsl,imx7d-gpc");
+	if (!np)
+		return;
+
+	gpc_base = of_iomap(np, 0);
+	if (!gpc_base)
+		return;
 }

arch/arm/mach-imx/suspend-imx53.S

···
  *                              ^
  *                              ^
  *                      imx53_suspend code
- *              PM_INFO structure(imx53_suspend_info)
+ *              PM_INFO structure(imx5_cpu_suspend_info)
  * ======================== low address =======================
  */
 
-/* Offsets of members of struct imx53_suspend_info */
+/* Offsets of members of struct imx5_cpu_suspend_info */
 #define SUSPEND_INFO_MX53_M4IF_V_OFFSET		0x0
 #define SUSPEND_INFO_MX53_IOMUXC_V_OFFSET	0x4
 #define SUSPEND_INFO_MX53_IO_COUNT_OFFSET	0x8

arch/arm/mach-ixp4xx/Kconfig

···
 
 config MACH_IXP4XX_OF
 	bool
-	prompt "Devce Tree IXP4xx boards"
+	prompt "Device Tree IXP4xx boards"
 	default y
 	select ARM_APPENDED_DTB # Old Redboot bootloaders deployed
 	select I2C
···
 config MACH_NSLU2
 	bool
 	prompt "Linksys NSLU2"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Linksys's
 	  NSLU2 NAS device. For more information on this platform,
···
 
 config MACH_AVILA
 	bool "Avila"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support the Gateworks
 	  Avila Network Platform. For more information on this platform,
···
 
 config ARCH_ADI_COYOTE
 	bool "Coyote"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support the ADI 
 	  Engineering Coyote Gateway Reference Platform. For more
···
 
 config MACH_GATEWAY7001
 	bool "Gateway 7001"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Gateway's
 	  7001 Access Point. For more information on this platform,
···
 
 config MACH_WG302V2
 	bool "Netgear WG302 v2 / WAG302 v2"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Netgear's
 	  WG302 v2 or WAG302 v2 Access Points. For more information
···
 
 config ARCH_IXDP425
 	bool "IXDP425"
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Intel's 
 	  IXDP425 Development Platform (Also known as Richfield).  
···
 
 config MACH_IXDPG425
 	bool "IXDPG425"
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Intel's
 	  IXDPG425 Development Platform (Also known as Montajade).
···
 config MACH_NAS100D
 	bool
 	prompt "NAS100D"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Iomega's
 	  NAS 100d device. For more information on this platform,
···
 config MACH_DSMG600
 	bool
 	prompt "D-Link DSM-G600 RevA"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support D-Link's
 	  DSM-G600 RevA device. For more information on this platform,
···
 config MACH_FSG
 	bool
 	prompt "Freecom FSG-3"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Freecom's
 	  FSG-3 device. For more information on this platform,
···
 config MACH_ARCOM_VULCAN
 	bool
 	prompt "Arcom/Eurotech Vulcan"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support Arcom's
 	  Vulcan board.
···
 config MACH_GTWX5715
 	bool "Gemtek WX5715 (Linksys WRV54G)"
 	depends on ARCH_IXP4XX
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 		This board is currently inside the Linksys WRV54G Gateways.
 
···
 
 config MACH_MICCPT
 	bool "Omicron MICCPT"
-	select FORCE_PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
 	  Say 'Y' here if you want your kernel to support the MICCPT
 	  board from OMICRON electronics GmbH.
···
 
 comment "IXP4xx Options"
 
+config IXP4XX_PCI_LEGACY
+	bool "IXP4xx legacy PCI driver support"
+	depends on PCI
+	help
+	  Selects legacy PCI driver.
+	  Not recommended for new development.
+
 config IXP4XX_INDIRECT_PCI
 	bool "Use indirect PCI memory access"
-	depends on PCI
+	depends on IXP4XX_PCI_LEGACY
 	help
           IXP4xx provides two methods of accessing PCI memory space:
 

arch/arm/mach-ixp4xx/avila-setup.c

···
 #include <linux/tty.h>
 #include <linux/serial_8250.h>
 #include <linux/gpio/machine.h>
+#include <linux/platform_data/pata_ixp4xx_cf.h>
 #include <asm/types.h>
 #include <asm/setup.h>
 #include <asm/memory.h>

arch/arm/mach-ixp4xx/common.c

···
 #include <linux/cpu.h>
 #include <linux/pci.h>
 #include <linux/sched_clock.h>
+#include <linux/soc/ixp4xx/cpu.h>
 #include <linux/irqchip/irq-ixp4xx.h>
 #include <linux/platform_data/timer-ixp4xx.h>
 #include <linux/dma-map-ops.h>
 #include <mach/udc.h>
 #include <mach/hardware.h>
-#include <mach/io.h>
 #include <linux/uaccess.h>
 #include <asm/page.h>
 #include <asm/exception.h>
···
 #include <asm/mach/time.h>
 
 #include "irqs.h"
+
+u32 ixp4xx_read_feature_bits(void)
+{
+	u32 val = ~__raw_readl(IXP4XX_EXP_CFG2);
+
+	if (cpu_is_ixp42x_rev_a0())
+		return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
+					       IXP4XX_FEATURE_AES);
+	if (cpu_is_ixp42x())
+		return val & IXP42X_FEATURE_MASK;
+	if (cpu_is_ixp43x())
+		return val & IXP43X_FEATURE_MASK;
+	return val & IXP46X_FEATURE_MASK;
+}
+EXPORT_SYMBOL(ixp4xx_read_feature_bits);
+
+void ixp4xx_write_feature_bits(u32 value)
+{
+	__raw_writel(~value, IXP4XX_EXP_CFG2);
+}
+EXPORT_SYMBOL(ixp4xx_write_feature_bits);
 
 #define IXP4XX_TIMER_FREQ 66666000
 
···
 	}
 };
 
+/* A single 32-bit register on IXP46x */
+#define IXP4XX_HWRANDOM_BASE_PHYS	0x70002100
+
+static struct resource ixp46x_hwrandom_resource[] = {
+	{
+		.start = IXP4XX_HWRANDOM_BASE_PHYS,
+		.end = IXP4XX_HWRANDOM_BASE_PHYS + 0x3,
+		.flags = IORESOURCE_MEM,
+	},
+};
+
+static struct platform_device ixp46x_hwrandom_device = {
+	.name           = "ixp4xx-hwrandom",
+	.id             = -1,
+	.dev = {
+		.coherent_dma_mask      = DMA_BIT_MASK(32),
+	},
+	.resource = ixp46x_hwrandom_resource,
+	.num_resources  = ARRAY_SIZE(ixp46x_hwrandom_resource),
+};
+
 /*
  * I2C controller. The IXP46x uses the same block as the IOP3xx, so
  * we just use the same device name.
···
 };
 
 static struct platform_device *ixp46x_devices[] __initdata = {
-	&ixp46x_i2c_controller
+	&ixp46x_hwrandom_device,
+	&ixp46x_i2c_controller,
 };
 
 unsigned long ixp4xx_exp_bus_size;

arch/arm/mach-ixp4xx/fsg-setup.c

···
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
+#include <mach/hardware.h>
 
 #include "irqs.h"
 

arch/arm/mach-ixp4xx/include/mach/cpu.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-ixp4xx/include/mach/cpu.h
- *
- * IXP4XX cpu type detection
- *
- * Copyright (C) 2007 MontaVista Software, Inc.
- */
-
-#ifndef __ASM_ARCH_CPU_H__
-#define __ASM_ARCH_CPU_H__
-
-#include <linux/io.h>
-#include <asm/cputype.h>
-
-/* Processor id value in CP15 Register 0 */
-#define IXP42X_PROCESSOR_ID_VALUE	0x690541c0 /* including unused 0x690541Ex */
-#define IXP42X_PROCESSOR_ID_MASK	0xffffffc0
-
-#define IXP43X_PROCESSOR_ID_VALUE	0x69054040
-#define IXP43X_PROCESSOR_ID_MASK	0xfffffff0
-
-#define IXP46X_PROCESSOR_ID_VALUE	0x69054200 /* including IXP455 */
-#define IXP46X_PROCESSOR_ID_MASK	0xfffffff0
-
-#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
-				IXP42X_PROCESSOR_ID_VALUE)
-#define cpu_is_ixp42x()	((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
-			 IXP42X_PROCESSOR_ID_VALUE)
-#define cpu_is_ixp43x()	((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
-			 IXP43X_PROCESSOR_ID_VALUE)
-#define cpu_is_ixp46x()	((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
-			 IXP46X_PROCESSOR_ID_VALUE)
-
-static inline u32 ixp4xx_read_feature_bits(void)
-{
-	u32 val = ~__raw_readl(IXP4XX_EXP_CFG2);
-
-	if (cpu_is_ixp42x_rev_a0())
-		return IXP42X_FEATURE_MASK & ~(IXP4XX_FEATURE_RCOMP |
-					       IXP4XX_FEATURE_AES);
-	if (cpu_is_ixp42x())
-		return val & IXP42X_FEATURE_MASK;
-	if (cpu_is_ixp43x())
-		return val & IXP43X_FEATURE_MASK;
-	return val & IXP46X_FEATURE_MASK;
-}
-
-static inline void ixp4xx_write_feature_bits(u32 value)
-{
-	__raw_writel(~value, IXP4XX_EXP_CFG2);
-}
-
-#endif  /* _ASM_ARCH_CPU_H */

arch/arm/mach-ixp4xx/include/mach/hardware.h

···
 #include "ixp4xx-regs.h"
 
 #ifndef __ASSEMBLER__
-#include <mach/cpu.h>
+#include <linux/soc/ixp4xx/cpu.h>
 #endif
 
 /* Platform helper functions and definitions */

arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h

···
  * it can be used with the low-level debug code.
  */
 #define IXP4XX_PERIPHERAL_BASE_PHYS	0xC8000000
-#define IXP4XX_PERIPHERAL_BASE_VIRT	IOMEM(0xFEF00000)
+#define IXP4XX_PERIPHERAL_BASE_VIRT	IOMEM(0xFEC00000)
 #define IXP4XX_PERIPHERAL_REGION_SIZE	0x00013000
 
 /*
  * PCI Config registers
  */
 #define IXP4XX_PCI_CFG_BASE_PHYS	0xC0000000
-#define IXP4XX_PCI_CFG_BASE_VIRT	IOMEM(0xFEF13000)
+#define IXP4XX_PCI_CFG_BASE_VIRT	IOMEM(0xFEC13000)
 #define IXP4XX_PCI_CFG_REGION_SIZE	0x00001000
 
 /*
  * Expansion BUS Configuration registers
  */
 #define IXP4XX_EXP_CFG_BASE_PHYS	0xC4000000
-#define IXP4XX_EXP_CFG_BASE_VIRT	0xFEF14000
+#define IXP4XX_EXP_CFG_BASE_VIRT	0xFEC14000
 #define IXP4XX_EXP_CFG_REGION_SIZE	0x00001000
 
 #define IXP4XX_EXP_CS0_OFFSET	0x00
···
 #define IXP4XX_SSP_BASE_PHYS		(IXP4XX_PERIPHERAL_BASE_PHYS + 0x12000)
 
 
+/* The UART is explicitly put in the beginning of fixmap */
 #define IXP4XX_UART1_BASE_VIRT		(IXP4XX_PERIPHERAL_BASE_VIRT + 0x0000)
 #define IXP4XX_UART2_BASE_VIRT		(IXP4XX_PERIPHERAL_BASE_VIRT + 0x1000)
 #define IXP4XX_PMU_BASE_VIRT		(IXP4XX_PERIPHERAL_BASE_VIRT + 0x2000)
···
 #define CRP_AD_CBE_WRITE	0x00010000
 
 #define DCMD_LENGTH	0x01fff		/* length mask (max = 8K - 1) */
-
-/* "fuse" bits of IXP_EXP_CFG2 */
-/* All IXP4xx CPUs */
-#define IXP4XX_FEATURE_RCOMP		(1 << 0)
-#define IXP4XX_FEATURE_USB_DEVICE	(1 << 1)
-#define IXP4XX_FEATURE_HASH		(1 << 2)
-#define IXP4XX_FEATURE_AES		(1 << 3)
-#define IXP4XX_FEATURE_DES		(1 << 4)
-#define IXP4XX_FEATURE_HDLC		(1 << 5)
-#define IXP4XX_FEATURE_AAL		(1 << 6)
-#define IXP4XX_FEATURE_HSS		(1 << 7)
-#define IXP4XX_FEATURE_UTOPIA		(1 << 8)
-#define IXP4XX_FEATURE_NPEB_ETH0	(1 << 9)
-#define IXP4XX_FEATURE_NPEC_ETH		(1 << 10)
-#define IXP4XX_FEATURE_RESET_NPEA	(1 << 11)
-#define IXP4XX_FEATURE_RESET_NPEB	(1 << 12)
-#define IXP4XX_FEATURE_RESET_NPEC	(1 << 13)
-#define IXP4XX_FEATURE_PCI		(1 << 14)
-#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT	(3 << 16)
-#define IXP4XX_FEATURE_XSCALE_MAX_FREQ	(3 << 22)
-#define IXP42X_FEATURE_MASK		(IXP4XX_FEATURE_RCOMP            | \
-					 IXP4XX_FEATURE_USB_DEVICE       | \
-					 IXP4XX_FEATURE_HASH             | \
-					 IXP4XX_FEATURE_AES              | \
-					 IXP4XX_FEATURE_DES              | \
-					 IXP4XX_FEATURE_HDLC             | \
-					 IXP4XX_FEATURE_AAL              | \
-					 IXP4XX_FEATURE_HSS              | \
-					 IXP4XX_FEATURE_UTOPIA           | \
-					 IXP4XX_FEATURE_NPEB_ETH0        | \
-					 IXP4XX_FEATURE_NPEC_ETH         | \
-					 IXP4XX_FEATURE_RESET_NPEA       | \
-					 IXP4XX_FEATURE_RESET_NPEB       | \
-					 IXP4XX_FEATURE_RESET_NPEC       | \
-					 IXP4XX_FEATURE_PCI              | \
-					 IXP4XX_FEATURE_UTOPIA_PHY_LIMIT | \
-					 IXP4XX_FEATURE_XSCALE_MAX_FREQ)
-
-
-/* IXP43x/46x CPUs */
-#define IXP4XX_FEATURE_ECC_TIMESYNC	(1 << 15)
-#define IXP4XX_FEATURE_USB_HOST		(1 << 18)
-#define IXP4XX_FEATURE_NPEA_ETH		(1 << 19)
-#define IXP43X_FEATURE_MASK		(IXP42X_FEATURE_MASK             | \
-					 IXP4XX_FEATURE_ECC_TIMESYNC     | \
-					 IXP4XX_FEATURE_USB_HOST         | \
-					 IXP4XX_FEATURE_NPEA_ETH)
-
-/* IXP46x CPU (including IXP455) only */
-#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3	(1 << 20)
-#define IXP4XX_FEATURE_RSA		(1 << 21)
-#define IXP46X_FEATURE_MASK		(IXP43X_FEATURE_MASK             | \
-					 IXP4XX_FEATURE_NPEB_ETH_1_TO_3  | \
-					 IXP4XX_FEATURE_RSA)
 
 #endif

arch/arm/mach-ixp4xx/include/mach/platform.h

···
 #define IXP4XX_UART_XTAL        	14745600
 
 /*
- * This structure provide a means for the board setup code
- * to give information to th pata_ixp4xx driver. It is
- * passed as platform_data.
- */
-struct ixp4xx_pata_data {
-	volatile u32	*cs0_cfg;
-	volatile u32	*cs1_cfg;
-	unsigned long	cs0_bits;
-	unsigned long	cs1_bits;
-	void __iomem	*cs0;
-	void __iomem	*cs1;
-};
-
-/*
  * Frequency of clock used for primary clocksource
  */
 extern unsigned long ixp4xx_timer_freq;

arch/arm/mach-ixp4xx/ixp4xx-of.c

···
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 
-#include <mach/hardware.h>
-#include <mach/ixp4xx-regs.h>
+/*
+ * These are the only fixed phys to virt mappings we ever need
+ * we put it right after the UART mapping at 0xffc80000-0xffc81fff
+ */
+#define IXP4XX_EXP_CFG_BASE_PHYS	0xC4000000
+#define IXP4XX_EXP_CFG_BASE_VIRT	0xFEC14000
 
 static struct map_desc ixp4xx_of_io_desc[] __initdata = {
 	/*

arch/arm/mach-ixp4xx/nas100d-setup.c

···
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
+#include <mach/hardware.h>
 
 #include "irqs.h"
 

arch/arm/mach-ixp4xx/nslu2-setup.c

···
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
 #include <asm/mach/time.h>
+#include <mach/hardware.h>
 
 #include "irqs.h"
 

arch/arm/mach-omap1/Kconfig

···
 config MACH_OMAP_H2
 	bool "TI H2 Support"
 	depends on ARCH_OMAP16XX
-    	help
+	help
 	  TI OMAP 1610/1611B H2 board support. Say Y here if you have such
 	  a board.
 
 config MACH_OMAP_H3
 	bool "TI H3 Support"
 	depends on ARCH_OMAP16XX
-    	help
+	help
 	  TI OMAP 1710 H3 board support. Say Y here if you have such
 	  a board.
 
···
 config MACH_OMAP_OSK
 	bool "TI OSK Support"
 	depends on ARCH_OMAP16XX
-    	help
+	help
 	  TI OMAP 5912 OSK (OMAP Starter Kit) board support. Say Y here
           if you have such a board.
 
 config OMAP_OSK_MISTRAL
 	bool "Mistral QVGA board Support"
 	depends on MACH_OMAP_OSK
-    	help
+	help
 	  The OSK supports an optional add-on board with a Quarter-VGA
 	  touchscreen, PDA-ish buttons, a resume button, bicolor LED,
 	  and camera connector.  Say Y here if you have this board.
···
 config MACH_OMAP_PERSEUS2
 	bool "TI Perseus2"
 	depends on ARCH_OMAP730
-    	help
+	help
 	  Support for TI OMAP 730 Perseus2 board. Say Y here if you have such
 	  a board.
 
 config MACH_OMAP_FSAMPLE
 	bool "TI F-Sample"
 	depends on ARCH_OMAP730
-    	help
+	help
 	  Support for TI OMAP 850 F-Sample board. Say Y here if you have such
 	  a board.
 

arch/arm/mach-omap2/cm.h

···
 
 extern struct omap_domain_base cm_base;
 extern struct omap_domain_base cm2_base;
-extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
 # endif
 
 /*

arch/arm/mach-omap2/cm_common.c

···
 #define CM_SINGLE_INSTANCE	0x2
 
 /**
- * omap2_set_globals_cm - set the CM/CM2 base addresses (for early use)
- * @cm: CM base virtual address
- * @cm2: CM2 base virtual address (if present on the booted SoC)
- *
- * XXX Will be replaced when the PRM/CM drivers are completed.
- */
-void __init omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2)
-{
-	cm_base.va = cm;
-	cm2_base.va = cm2;
-}
-
-/**
  * cm_split_idlest_reg - split CM_IDLEST reg addr into its components
  * @idlest_reg: CM_IDLEST* virtual address
  * @prcm_inst: pointer to an s16 to return the PRCM instance offset

arch/arm/mach-omap2/common.h

···
 void am35xx_init_early(void);
 void ti814x_init_early(void);
 void ti816x_init_early(void);
-void am33xx_init_early(void);
 void am43xx_init_early(void);
 void am43xx_init_late(void);
 void omap4430_init_early(void);

arch/arm/mach-omap2/control.c

···
 static struct omap3_control_regs control_context;
 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
 
-void __init omap2_set_globals_control(void __iomem *ctrl)
-{
-	omap2_ctrl_base = ctrl;
-}
-
 u8 omap_ctrl_readb(u16 offset)
 {
 	u32 val;

arch/arm/mach-omap2/control.h

···
 void omap3_ctrl_init(void);
 int omap2_control_base_init(void);
 int omap_control_init(void);
-void omap2_set_globals_control(void __iomem *ctrl);
 void __init omap3_control_legacy_iomap_init(void);
 #else
 #define omap_ctrl_readb(x)		0

arch/arm/mach-omap2/pm33xx-core.c

···
 
 #include <linux/cpuidle.h>
 #include <linux/platform_data/pm33xx.h>
+#include <linux/suspend.h>
 #include <asm/cpuidle.h>
 #include <asm/smp_scu.h>
 #include <asm/suspend.h>
···
 		return NULL;
 }
 
+#ifdef CONFIG_SUSPEND
+/*
+ * Block system suspend initially. Later on pm33xx sets up it's own
+ * platform_suspend_ops after probe. That depends also on loaded
+ * wkup_m3_ipc and booted am335x-pm-firmware.elf.
+ */
+static int amx3_suspend_block(suspend_state_t state)
+{
+	pr_warn("PM not initialized for pm33xx, wkup_m3_ipc, or am335x-pm-firmware.elf\n");
+
+	return -EINVAL;
+}
+
+static int amx3_pm_valid(suspend_state_t state)
+{
+	switch (state) {
+	case PM_SUSPEND_STANDBY:
+		return 1;
+	default:
+		return 0;
+	}
+}
+
+static const struct platform_suspend_ops amx3_blocked_pm_ops = {
+	.begin = amx3_suspend_block,
+	.valid = amx3_pm_valid,
+};
+
+static void __init amx3_block_suspend(void)
+{
+	suspend_set_ops(&amx3_blocked_pm_ops);
+}
+#else
+static inline void amx3_block_suspend(void)
+{
+}
+#endif	/* CONFIG_SUSPEND */
+
 int __init amx3_common_pm_init(void)
 {
 	struct am33xx_pm_platform_data *pdata;
···
 	devinfo.size_data = sizeof(*pdata);
 	devinfo.id = -1;
 	platform_device_register_full(&devinfo);
+	amx3_block_suspend();
 
 	return 0;
 }

arch/arm/mach-s3c/mach-rx1950.c

···
 		break;
 	default:
 		return -EINVAL;
-		break;
 	}
 
 	if (delay_on && delay_off && !*delay_on && !*delay_off)

arch/arm64/Kconfig.platforms

···
 	select IRQ_FASTEOI_HIERARCHY_HANDLERS
 	select PINCTRL
 	select RESET_CONTROLLER
+	select SUN4I_TIMER
 	help
 	  This enables support for Allwinner sunxi based SoCs like the A64.
 

arch/arm64/boot/dts/allwinner/sun50i-a64-sopine-baseboard.dts

···
 &emac {
 	pinctrl-names = "default";
 	pinctrl-0 = <&rgmii_pins>;
-	phy-mode = "rgmii-id";
+	phy-mode = "rgmii-txid";
 	phy-handle = <&ext_rgmii_phy>;
 	phy-supply = <&reg_dc1sw>;
 	status = "okay";

arch/arm64/boot/dts/rockchip/rk3399.dtsi

···
 		       <&pcie_phy 2>, <&pcie_phy 3>;
 		phy-names = "pcie-phy-0", "pcie-phy-1",
 			    "pcie-phy-2", "pcie-phy-3";
-		ranges = <0x83000000 0x0 0xfa000000 0x0 0xfa000000 0x0 0x1e00000>,
+		ranges = <0x82000000 0x0 0xfa000000 0x0 0xfa000000 0x0 0x1e00000>,
 			 <0x81000000 0x0 0xfbe00000 0x0 0xfbe00000 0x0 0x100000>;
 		resets = <&cru SRST_PCIE_CORE>, <&cru SRST_PCIE_MGMT>,
 			 <&cru SRST_PCIE_MGMT_STICKY>, <&cru SRST_PCIE_PIPE>,

drivers/ata/Kconfig

···
 
 config PATA_IXP4XX_CF
 	tristate "IXP4XX Compact Flash support"
-	depends on ARCH_IXP4XX
+	depends on ARCH_IXP4XX || COMPILE_TEST
 	help
 	  This option enables support for a Compact Flash connected on
 	  the ixp4xx expansion bus. This driver had been written for

drivers/ata/pata_ixp4xx_cf.c

···
 #include <linux/libata.h>
 #include <linux/irq.h>
 #include <linux/platform_device.h>
+#include <linux/platform_data/pata_ixp4xx_cf.h>
 #include <scsi/scsi_host.h>
 
 #define DRV_NAME	"pata_ixp4xx_cf"

drivers/char/hw_random/Kconfig

···
 
 config HW_RANDOM_IXP4XX
 	tristate "Intel IXP4xx NPU HW Pseudo-Random Number Generator support"
-	depends on ARCH_IXP4XX
+	depends on ARCH_IXP4XX || COMPILE_TEST
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Pseudo-Random

drivers/char/hw_random/ixp4xx-rng.c

···
+// SPDX-License-Identifier: GPL-2.0
 /*
  * drivers/char/hw_random/ixp4xx-rng.c
  *
···
  * Copyright 2005 (c) MontaVista Software, Inc.
  *
  * Fixes by Michael Buesch
- *
- * This file is licensed under  the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
  */
 
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/platform_device.h>
 #include <linux/init.h>
 #include <linux/bitops.h>
 #include <linux/hw_random.h>
+#include <linux/of.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 #include <asm/io.h>
-#include <mach/hardware.h>
-
 
 static int ixp4xx_rng_data_read(struct hwrng *rng, u32 *buffer)
 {
···
 	.data_read	= ixp4xx_rng_data_read,
 };
 
-static int __init ixp4xx_rng_init(void)
+static int ixp4xx_rng_probe(struct platform_device *pdev)
 {
 	void __iomem * rng_base;
-	int err;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
 
 	if (!cpu_is_ixp46x()) /* includes IXP455 */
 		return -ENOSYS;
 
-	rng_base = ioremap(0x70002100, 4);
-	if (!rng_base)
-		return -ENOMEM;
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	rng_base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(rng_base))
+		return PTR_ERR(rng_base);
+
 	ixp4xx_rng_ops.priv = (unsigned long)rng_base;
-	err = hwrng_register(&ixp4xx_rng_ops);
-	if (err)
-		iounmap(rng_base);
-
-	return err;
+	return devm_hwrng_register(dev, &ixp4xx_rng_ops);
 }
 
-static void __exit ixp4xx_rng_exit(void)
-{
-	void __iomem * rng_base = (void __iomem *)ixp4xx_rng_ops.priv;
+static const struct of_device_id ixp4xx_rng_of_match[] = {
+	{
+		.compatible = "intel,ixp46x-rng",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, ixp4xx_rng_of_match);
 
-	hwrng_unregister(&ixp4xx_rng_ops);
-	iounmap(rng_base);
-}
-
-module_init(ixp4xx_rng_init);
-module_exit(ixp4xx_rng_exit);
+static struct platform_driver ixp4xx_rng_driver = {
+	.driver = {
+		.name = "ixp4xx-hwrandom",
+		.of_match_table = ixp4xx_rng_of_match,
+	},
+	.probe = ixp4xx_rng_probe,
+};
+module_platform_driver(ixp4xx_rng_driver);
 
 MODULE_AUTHOR("Deepak Saxena <[e-mail]>");
 MODULE_DESCRIPTION("H/W Pseudo-Random Number Generator (RNG) driver for IXP45x/46x");

drivers/crypto/ixp4xx_crypto.c

···
 #include <linux/soc/ixp4xx/npe.h>
 #include <linux/soc/ixp4xx/qmgr.h>
 
+/* Intermittent includes, delete this after v5.14-rc1 */
+#include <linux/soc/ixp4xx/cpu.h>
+#include <mach/ixp4xx-regs.h>
+
 #define MAX_KEYLEN 32
 
 /* hash: cfgword + 2 * digestlen; crypt: keylen + cfgword */

drivers/net/ethernet/xscale/ixp4xx_eth.c

···
 #include <linux/module.h>
 #include <linux/soc/ixp4xx/npe.h>
 #include <linux/soc/ixp4xx/qmgr.h>
+#include <mach/hardware.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 #include "ixp46x_ts.h"
 

drivers/net/ethernet/xscale/ptp_ixp46x.c

···
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/kernel.h>
-#include <linux/module.h>
-
 #include <linux/ptp_clock_kernel.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 #include "ixp46x_ts.h"
 

drivers/net/wan/ixp4xx_hss.c

···
 #include <linux/slab.h>
 #include <linux/soc/ixp4xx/npe.h>
 #include <linux/soc/ixp4xx/qmgr.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 #define DEBUG_DESC		0
 #define DEBUG_RX		0

drivers/pci/controller/Kconfig

···
 	depends on OF
 	default ARCH_GEMINI
 
+config PCI_IXP4XX
+	bool "Intel IXP4xx PCI controller"
+	depends on ARM && OF
+	default ARCH_IXP4XX
+	help
+	  Say Y here if you want support for the PCI host controller found
+	  in the Intel IXP4xx XScale-based network processor SoC.
+
 config PCI_TEGRA
 	bool "NVIDIA Tegra PCIe controller"
 	depends on ARCH_TEGRA || COMPILE_TEST

drivers/pci/controller/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_PCIE_CADENCE) += cadence/
 obj-$(CONFIG_PCI_FTPCI100) += pci-ftpci100.o
+obj-$(CONFIG_PCI_IXP4XX) += pci-ixp4xx.o
 obj-$(CONFIG_PCI_HYPERV) += pci-hyperv.o
 obj-$(CONFIG_PCI_HYPERV_INTERFACE) += pci-hyperv-intf.o
 obj-$(CONFIG_PCI_MVEBU) += pci-mvebu.o

drivers/pci/controller/pci-ixp4xx.c

···
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support for Intel IXP4xx PCI host controller
+ *
+ * Copyright (C) 2017 Linus Walleij <[e-mail]>
+ *
+ * Based on the IXP4xx arch/arm/mach-ixp4xx/common-pci.c driver
+ * Copyright (C) 2002 Intel Corporation
+ * Copyright (C) 2003 Greg Ungerer <[e-mail]>
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ * Copyright (C) 2005 Deepak Saxena <[e-mail]>
+ * Copyright (C) 2005 Alessandro Zummo <[e-mail]>
+ *
+ * TODO:
+ * - Test IO-space access
+ * - DMA support
+ */
+
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_pci.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/bits.h>
+
+/* Register offsets */
+#define IXP4XX_PCI_NP_AD		0x00
+#define IXP4XX_PCI_NP_CBE		0x04
+#define IXP4XX_PCI_NP_WDATA		0x08
+#define IXP4XX_PCI_NP_RDATA		0x0c
+#define IXP4XX_PCI_CRP_AD_CBE		0x10
+#define IXP4XX_PCI_CRP_WDATA		0x14
+#define IXP4XX_PCI_CRP_RDATA		0x18
+#define IXP4XX_PCI_CSR			0x1c
+#define IXP4XX_PCI_ISR			0x20
+#define IXP4XX_PCI_INTEN		0x24
+#define IXP4XX_PCI_DMACTRL		0x28
+#define IXP4XX_PCI_AHBMEMBASE		0x2c
+#define IXP4XX_PCI_AHBIOBASE		0x30
+#define IXP4XX_PCI_PCIMEMBASE		0x34
+#define IXP4XX_PCI_AHBDOORBELL		0x38
+#define IXP4XX_PCI_PCIDOORBELL		0x3c
+#define IXP4XX_PCI_ATPDMA0_AHBADDR	0x40
+#define IXP4XX_PCI_ATPDMA0_PCIADDR	0x44
+#define IXP4XX_PCI_ATPDMA0_LENADDR	0x48
+#define IXP4XX_PCI_ATPDMA1_AHBADDR	0x4c
+#define IXP4XX_PCI_ATPDMA1_PCIADDR	0x50
+#define IXP4XX_PCI_ATPDMA1_LENADDR	0x54
+
+/* CSR bit definitions */
+#define IXP4XX_PCI_CSR_HOST		BIT(0)
+#define IXP4XX_PCI_CSR_ARBEN		BIT(1)
+#define IXP4XX_PCI_CSR_ADS		BIT(2)
+#define IXP4XX_PCI_CSR_PDS		BIT(3)
+#define IXP4XX_PCI_CSR_ABE		BIT(4)
+#define IXP4XX_PCI_CSR_DBT		BIT(5)
+#define IXP4XX_PCI_CSR_ASE		BIT(8)
+#define IXP4XX_PCI_CSR_IC		BIT(15)
+#define IXP4XX_PCI_CSR_PRST		BIT(16)
+
+/* ISR (Interrupt status) Register bit definitions */
+#define IXP4XX_PCI_ISR_PSE		BIT(0)
+#define IXP4XX_PCI_ISR_PFE		BIT(1)
+#define IXP4XX_PCI_ISR_PPE		BIT(2)
+#define IXP4XX_PCI_ISR_AHBE		BIT(3)
+#define IXP4XX_PCI_ISR_APDC		BIT(4)
+#define IXP4XX_PCI_ISR_PADC		BIT(5)
+#define IXP4XX_PCI_ISR_ADB		BIT(6)
+#define IXP4XX_PCI_ISR_PDB		BIT(7)
+
+/* INTEN (Interrupt Enable) Register bit definitions */
+#define IXP4XX_PCI_INTEN_PSE		BIT(0)
+#define IXP4XX_PCI_INTEN_PFE		BIT(1)
+#define IXP4XX_PCI_INTEN_PPE		BIT(2)
+#define IXP4XX_PCI_INTEN_AHBE		BIT(3)
+#define IXP4XX_PCI_INTEN_APDC		BIT(4)
+#define IXP4XX_PCI_INTEN_PADC		BIT(5)
+#define IXP4XX_PCI_INTEN_ADB		BIT(6)
+#define IXP4XX_PCI_INTEN_PDB		BIT(7)
+
+/* Shift value for byte enable on NP cmd/byte enable register */
+#define IXP4XX_PCI_NP_CBE_BESL		4
+
+/* PCI commands supported by NP access unit */
+#define NP_CMD_IOREAD			0x2
+#define NP_CMD_IOWRITE			0x3
+#define NP_CMD_CONFIGREAD		0xa
+#define NP_CMD_CONFIGWRITE		0xb
+#define NP_CMD_MEMREAD			0x6
+#define	NP_CMD_MEMWRITE			0x7
+
+/* Constants for CRP access into local config space */
+#define CRP_AD_CBE_BESL         20
+#define CRP_AD_CBE_WRITE	0x00010000
+
+/* Special PCI configuration space registers for this controller */
+#define IXP4XX_PCI_RTOTTO		0x40
+
+struct ixp4xx_pci {
+	struct device *dev;
+	void __iomem *base;
+	bool errata_hammer;
+	bool host_mode;
+};
+
+/*
+ * The IXP4xx has a peculiar address bus that will change the
+ * byte order on SoC peripherals depending on whether the device
+ * operates in big-endian or little-endian mode. That means that
+ * readl() and writel() that always use little-endian access
+ * will not work for SoC peripherals such as the PCI controller
+ * when used in big-endian mode. The accesses to the individual
+ * PCI devices on the other hand, are always little-endian and
+ * can use readl() and writel().
+ *
+ * For local AHB bus access we need to use __raw_[readl|writel]()
+ * to make sure that we access the SoC devices in the CPU native
+ * endianness.
+ */
+static inline u32 ixp4xx_readl(struct ixp4xx_pci *p, u32 reg)
+{
+	return __raw_readl(p->base + reg);
+}
+
+static inline void ixp4xx_writel(struct ixp4xx_pci *p, u32 reg, u32 val)
+{
+	__raw_writel(val, p->base + reg);
+}
+
+static int ixp4xx_pci_check_master_abort(struct ixp4xx_pci *p)
+{
+	u32 isr = ixp4xx_readl(p, IXP4XX_PCI_ISR);
+
+	if (isr & IXP4XX_PCI_ISR_PFE) {
+		/* Make sure the master abort bit is reset */
+		ixp4xx_writel(p, IXP4XX_PCI_ISR, IXP4XX_PCI_ISR_PFE);
+		dev_dbg(p->dev, "master abort detected\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ixp4xx_pci_read(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 *data)
+{
+	ixp4xx_writel(p, IXP4XX_PCI_NP_AD, addr);
+
+	if (p->errata_hammer) {
+		int i;
+
+		/*
+		 * PCI workaround - only works if NP PCI space reads have
+		 * no side effects. Hammer the register and read twice 8
+		 * times. last one will be good.
+		 */
+		for (i = 0; i < 8; i++) {
+			ixp4xx_writel(p, IXP4XX_PCI_NP_CBE, cmd);
+			*data = ixp4xx_readl(p, IXP4XX_PCI_NP_RDATA);
+			*data = ixp4xx_readl(p, IXP4XX_PCI_NP_RDATA);
+		}
+	} else {
+		ixp4xx_writel(p, IXP4XX_PCI_NP_CBE, cmd);
+		*data = ixp4xx_readl(p, IXP4XX_PCI_NP_RDATA);
+	}
+
+	return ixp4xx_pci_check_master_abort(p);
+}
+
+static int ixp4xx_pci_write(struct ixp4xx_pci *p, u32 addr, u32 cmd, u32 data)
+{
+	ixp4xx_writel(p, IXP4XX_PCI_NP_AD, addr);
+
+	/* Set up the write */
+	ixp4xx_writel(p, IXP4XX_PCI_NP_CBE, cmd);
+
+	/* Execute the write by writing to NP_WDATA */
+	ixp4xx_writel(p, IXP4XX_PCI_NP_WDATA, data);
+
+	return ixp4xx_pci_check_master_abort(p);
+}
+
+static u32 ixp4xx_config_addr(u8 bus_num, u16 devfn, int where)
+{
+	/* Root bus is always 0 in this hardware */
+	if (bus_num == 0) {
+		/* type 0 */
+		return BIT(32-PCI_SLOT(devfn)) | ((PCI_FUNC(devfn)) << 8) |
+			(where & ~3);
+	} else {
+		/* type 1 */
+		return (bus_num << 16) | ((PCI_SLOT(devfn)) << 11) |
+			((PCI_FUNC(devfn)) << 8) | (where & ~3) | 1;
+	}
+}
+
+/*
+ * CRP functions are "Controller Configuration Port" accesses
+ * initiated from within this driver itself to read/write PCI
+ * control information in the config space.
+ */
+static u32 ixp4xx_crp_byte_lane_enable_bits(u32 n, int size)
+{
+	if (size == 1)
+		return (0xf & ~BIT(n)) << CRP_AD_CBE_BESL;
+	if (size == 2)
+		return (0xf & ~(BIT(n) | BIT(n+1))) << CRP_AD_CBE_BESL;
+	if (size == 4)
+		return 0;
+	return 0xffffffff;
+}
+
+static int ixp4xx_crp_read_config(struct ixp4xx_pci *p, int where, int size,
+				  u32 *value)
+{
+	u32 n, cmd, val;
+
+	n = where % 4;
+	cmd = where & ~3;
+
+	dev_dbg(p->dev, "%s from %d size %d cmd %08x\n",
+		__func__, where, size, cmd);
+
+	ixp4xx_writel(p, IXP4XX_PCI_CRP_AD_CBE, cmd);
+	val = ixp4xx_readl(p, IXP4XX_PCI_CRP_RDATA);
+
+	val >>= (8*n);
+	switch (size) {
+	case 1:
+		val &= U8_MAX;
+		dev_dbg(p->dev, "%s read byte %02x\n", __func__, val);
+		break;
+	case 2:
+		val &= U16_MAX;
+		dev_dbg(p->dev, "%s read word %04x\n", __func__, val);
+		break;
+	case 4:
+		val &= U32_MAX;
+		dev_dbg(p->dev, "%s read long %08x\n", __func__, val);
+		break;
+	default:
+		/* Should not happen */
+		dev_err(p->dev, "%s illegal size\n", __func__);
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+	*value = val;
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ixp4xx_crp_write_config(struct ixp4xx_pci *p, int where, int size,
+				   u32 value)
+{
+	u32 n, cmd, val;
+
+	n = where % 4;
+	cmd = ixp4xx_crp_byte_lane_enable_bits(n, size);
+	if (cmd == 0xffffffff)
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+	cmd |= where & ~3;
+	cmd |= CRP_AD_CBE_WRITE;
+
+	val = value << (8*n);
+
+	dev_dbg(p->dev, "%s to %d size %d cmd %08x val %08x\n",
+		__func__, where, size, cmd, val);
+
+	ixp4xx_writel(p, IXP4XX_PCI_CRP_AD_CBE, cmd);
+	ixp4xx_writel(p, IXP4XX_PCI_CRP_WDATA, val);
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * Then follows the functions that read and write from the common PCI
+ * configuration space.
+ */
+static u32 ixp4xx_byte_lane_enable_bits(u32 n, int size)
+{
+	if (size == 1)
+		return (0xf & ~BIT(n)) << 4;
+	if (size == 2)
+		return (0xf & ~(BIT(n) | BIT(n+1))) << 4;
+	if (size == 4)
+		return 0;
+	return 0xffffffff;
+}
+
+static int ixp4xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+				  int where, int size, u32 *value)
+{
+	struct ixp4xx_pci *p = bus->sysdata;
+	u32 n, addr, val, cmd;
+	u8 bus_num = bus->number;
+	int ret;
+
+	*value = 0xffffffff;
+	n = where % 4;
+	cmd = ixp4xx_byte_lane_enable_bits(n, size);
+	if (cmd == 0xffffffff)
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
+	addr = ixp4xx_config_addr(bus_num, devfn, where);
+	cmd |= NP_CMD_CONFIGREAD;
+	dev_dbg(p->dev, "read_config from %d size %d dev %d:%d:%d address: %08x cmd: %08x\n",
+		where, size, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn), addr, cmd);
+
+	ret = ixp4xx_pci_read(p, addr, cmd, &val);
+	if (ret)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	val >>= (8*n);
+	switch (size) {
+	case 1:
+		val &= U8_MAX;
+		dev_dbg(p->dev, "%s read byte %02x\n", __func__, val);
+		break;
+	case 2:
+		val &= U16_MAX;
+		dev_dbg(p->dev, "%s read word %04x\n", __func__, val);
+		break;
+	case 4:
+		val &= U32_MAX;
+		dev_dbg(p->dev, "%s read long %08x\n", __func__, val);
+		break;
+	default:
+		/* Should not happen */
+		dev_err(p->dev, "%s illegal size\n", __func__);
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	}
+	*value = val;
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static int ixp4xx_pci_write_config(struct pci_bus *bus,  unsigned int devfn,
+				   int where, int size, u32 value)
+{
+	struct ixp4xx_pci *p = bus->sysdata;
+	u32 n, addr, val, cmd;
+	u8 bus_num = bus->number;
+	int ret;
+
+	n = where % 4;
+	cmd = ixp4xx_byte_lane_enable_bits(n, size);
+	if (cmd == 0xffffffff)
+		return PCIBIOS_BAD_REGISTER_NUMBER;
+
+	addr = ixp4xx_config_addr(bus_num, devfn, where);
+	cmd |= NP_CMD_CONFIGWRITE;
+	val = value << (8*n);
+
+	dev_dbg(p->dev, "write_config_byte %#x to %d size %d dev %d:%d:%d addr: %08x cmd %08x\n",
+		value, where, size, bus_num, PCI_SLOT(devfn), PCI_FUNC(devfn), addr, cmd);
+
+	ret = ixp4xx_pci_write(p, addr, cmd, val);
+	if (ret)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops ixp4xx_pci_ops = {
+	.read = ixp4xx_pci_read_config,
+	.write = ixp4xx_pci_write_config,
+};
+
+static u32 ixp4xx_pci_addr_to_64mconf(phys_addr_t addr)
+{
+	u8 base;
+
+	base = ((addr & 0xff000000) >> 24);
+	return (base << 24) | ((base + 1) << 16)
+		| ((base + 2) << 8) | (base + 3);
+}
+
+static int ixp4xx_pci_parse_map_ranges(struct ixp4xx_pci *p)
+{
+	struct device *dev = p->dev;
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(p);
+	struct resource_entry *win;
+	struct resource *res;
+	phys_addr_t addr;
+
+	win = resource_list_first_type(&bridge->windows, IORESOURCE_MEM);
+	if (win) {
+		u32 pcimembase;
+
+		res = win->res;
+		addr = res->start - win->offset;
+
+		if (res->flags & IORESOURCE_PREFETCH)
+			res->name = "IXP4xx PCI PRE-MEM";
+		else
+			res->name = "IXP4xx PCI NON-PRE-MEM";
+
+		dev_dbg(dev, "%s window %pR, bus addr %pa\n",
+			res->name, res, &addr);
+		if (resource_size(res) != SZ_64M) {
+			dev_err(dev, "memory range is not 64MB\n");
+			return -EINVAL;
+		}
+
+		pcimembase = ixp4xx_pci_addr_to_64mconf(addr);
+		/* Commit configuration */
+		ixp4xx_writel(p, IXP4XX_PCI_PCIMEMBASE, pcimembase);
+	} else {
+		dev_err(dev, "no AHB memory mapping defined\n");
+	}
+
+	win = resource_list_first_type(&bridge->windows, IORESOURCE_IO);
+	if (win) {
+		res = win->res;
+
+		addr = pci_pio_to_address(res->start);
+		if (addr & 0xff) {
+			dev_err(dev, "IO mem at uneven address: %pa\n", &addr);
+			return -EINVAL;
+		}
+
+		res->name = "IXP4xx PCI IO MEM";
+		/*
+		 * Setup I/O space location for PCI->AHB access, the
+		 * upper 24 bits of the address goes into the lower
+		 * 24 bits of this register.
+		 */
+		ixp4xx_writel(p, IXP4XX_PCI_AHBIOBASE, (addr >> 8));
+	} else {
+		dev_info(dev, "no IO space AHB memory mapping defined\n");
+	}
+
+	return 0;
+}
+
+static int ixp4xx_pci_parse_map_dma_ranges(struct ixp4xx_pci *p)
+{
+	struct device *dev = p->dev;
+	struct pci_host_bridge *bridge = pci_host_bridge_from_priv(p);
+	struct resource_entry *win;
+	struct resource *res;
+	phys_addr_t addr;
+	u32 ahbmembase;
+
+	win = resource_list_first_type(&bridge->dma_ranges, IORESOURCE_MEM);
+	if (win) {
+		res = win->res;
+		addr = res->start - win->offset;
+
+		if (resource_size(res) != SZ_64M) {
+			dev_err(dev, "DMA memory range is not 64MB\n");
+			return -EINVAL;
+		}
+
+		dev_dbg(dev, "DMA MEM BASE: %pa\n", &addr);
+		/*
+		 * 4 PCI-to-AHB windows of 16 MB each, write the 8 high bits
+		 * into each byte of the PCI_AHBMEMBASE register.
+		 */
+		ahbmembase = ixp4xx_pci_addr_to_64mconf(addr);
+		/* Commit AHB membase */
+		ixp4xx_writel(p, IXP4XX_PCI_AHBMEMBASE, ahbmembase);
+	} else {
+		dev_err(dev, "no DMA memory range defined\n");
+	}
+
+	return 0;
+}
+
+/* Only used to get context for abort handling */
+static struct ixp4xx_pci *ixp4xx_pci_abort_singleton;
+
+static int ixp4xx_pci_abort_handler(unsigned long addr, unsigned int fsr,
+				    struct pt_regs *regs)
+{
+	struct ixp4xx_pci *p = ixp4xx_pci_abort_singleton;
+	u32 isr, status;
+	int ret;
+
+	isr = ixp4xx_readl(p, IXP4XX_PCI_ISR);
+	ret = ixp4xx_crp_read_config(p, PCI_STATUS, 2, &status);
+	if (ret) {
+		dev_err(p->dev, "unable to read abort status\n");
+		return -EINVAL;
+	}
+
+	dev_err(p->dev,
+		"PCI: abort_handler addr = %#lx, isr = %#x, status = %#x\n",
+		addr, isr, status);
+
+	/* Make sure the Master Abort bit is reset */
+	ixp4xx_writel(p, IXP4XX_PCI_ISR, IXP4XX_PCI_ISR_PFE);
+	status |= PCI_STATUS_REC_MASTER_ABORT;
+	ret = ixp4xx_crp_write_config(p, PCI_STATUS, 2, status);
+	if (ret)
+		dev_err(p->dev, "unable to clear abort status bit\n");
+
+	/*
+	 * If it was an imprecise abort, then we need to correct the
+	 * return address to be _after_ the instruction.
+	 */
+	if (fsr & (1 << 10)) {
+		dev_err(p->dev, "imprecise abort\n");
+		regs->ARM_pc += 4;
+	}
+
+	return 0;
+}
+
+static int __init ixp4xx_pci_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct ixp4xx_pci *p;
+	struct pci_host_bridge *host;
+	int ret;
+	u32 val;
+	phys_addr_t addr;
+	u32 basereg[4] = {
+		PCI_BASE_ADDRESS_0,
+		PCI_BASE_ADDRESS_1,
+		PCI_BASE_ADDRESS_2,
+		PCI_BASE_ADDRESS_3,
+	};
+	int i;
+
+	host = devm_pci_alloc_host_bridge(dev, sizeof(*p));
+	if (!host)
+		return -ENOMEM;
+
+	host->ops = &ixp4xx_pci_ops;
+	p = pci_host_bridge_priv(host);
+	host->sysdata = p;
+	p->dev = dev;
+	dev_set_drvdata(dev, p);
+
+	/*
+	 * Set up quirk for erratic behaviour in the 42x variant
+	 * when accessing config space.
+	 */
+	if (of_device_is_compatible(np, "intel,ixp42x-pci")) {
+		p->errata_hammer = true;
+		dev_info(dev, "activate hammering errata\n");
+	}
+
+	p->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(p->base))
+		return PTR_ERR(p->base);
+
+	val = ixp4xx_readl(p, IXP4XX_PCI_CSR);
+	p->host_mode = !!(val & IXP4XX_PCI_CSR_HOST);
+	dev_info(dev, "controller is in %s mode\n",
+		 p->host_mode ? "host" : "option");
+
+	/* Hook in our fault handler for PCI errors */
+	ixp4xx_pci_abort_singleton = p;
+	hook_fault_code(16+6, ixp4xx_pci_abort_handler, SIGBUS, 0,
+			"imprecise external abort");
+
+	ret = ixp4xx_pci_parse_map_ranges(p);
+	if (ret)
+		return ret;
+
+	ret = ixp4xx_pci_parse_map_dma_ranges(p);
+	if (ret)
+		return ret;
+
+	/* This is only configured in host mode */
+	if (p->host_mode) {
+		addr = __pa(PAGE_OFFSET);
+		/* This is a noop (0x00) but explains what is going on */
+		addr |= PCI_BASE_ADDRESS_SPACE_MEMORY;
+
+		for (i = 0; i < 4; i++) {
+			/* Write this directly into the config space */
+			ret = ixp4xx_crp_write_config(p, basereg[i], 4, addr);
+			if (ret)
+				dev_err(dev, "failed to set up PCI_BASE_ADDRESS_%d\n", i);
+			else
+				dev_info(dev, "set PCI_BASE_ADDR_%d to %pa\n", i, &addr);
+			addr += SZ_16M;
+		}
+
+		/*
+		 * Enable CSR window at 64 MiB to allow PCI masters to continue
+		 * prefetching past the 64 MiB boundary, if all AHB to PCI
+		 * windows are consecutive.
+		 */
+		ret = ixp4xx_crp_write_config(p, PCI_BASE_ADDRESS_4, 4, addr);
+		if (ret)
+			dev_err(dev, "failed to set up PCI_BASE_ADDRESS_4\n");
+		else
+			dev_info(dev, "set PCI_BASE_ADDR_4 to %pa\n", &addr);
+
+		/*
+		 * Put the IO memory window at the very end of physical memory
+		 * at 0xfffffc00. This is when the system is trying to access IO
+		 * memory over AHB.
+		 */
+		addr = 0xfffffc00;
+		addr |= PCI_BASE_ADDRESS_SPACE_IO;
+		ret = ixp4xx_crp_write_config(p, PCI_BASE_ADDRESS_5, 4, addr);
+		if (ret)
+			dev_err(dev, "failed to set up PCI_BASE_ADDRESS_5\n");
+		else
+			dev_info(dev, "set PCI_BASE_ADDR_5 to %pa\n", &addr);
+
+		/*
+		 * Retry timeout to 0x80
+		 * Transfer ready timeout to 0xff
+		 */
+		ret = ixp4xx_crp_write_config(p, IXP4XX_PCI_RTOTTO, 4,
+					      0x000080ff);
+		if (ret)
+			dev_err(dev, "failed to set up TRDY limit\n");
+		else
+			dev_info(dev, "set TRDY limit to 0x80ff\n");
+	}
+
+	/* Clear interrupts */
+	val = IXP4XX_PCI_ISR_PSE | IXP4XX_PCI_ISR_PFE | IXP4XX_PCI_ISR_PPE | IXP4XX_PCI_ISR_AHBE;
+	ixp4xx_writel(p, IXP4XX_PCI_ISR, val);
+
+	/*
+	 * Set Initialize Complete in PCI Control Register: allow IXP4XX to
+	 * generate PCI configuration cycles. Specify that the AHB bus is
+	 * operating in big-endian mode. Set up byte lane swapping between
+	 * little-endian PCI and the big-endian AHB bus.
+	 */
+	val = IXP4XX_PCI_CSR_IC | IXP4XX_PCI_CSR_ABE;
+	if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN))
+		val |= (IXP4XX_PCI_CSR_PDS | IXP4XX_PCI_CSR_ADS);
+	ixp4xx_writel(p, IXP4XX_PCI_CSR, val);
+
+	ret = ixp4xx_crp_write_config(p, PCI_COMMAND, 2, PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
+	if (ret)
+		dev_err(dev, "unable to initialize master and command memory\n");
+	else
+		dev_info(dev, "initialized as master\n");
+
+	pci_host_probe(host);
+
+	return 0;
+}
+
+static const struct of_device_id ixp4xx_pci_of_match[] = {
+	{
+		.compatible = "intel,ixp42x-pci",
+	},
+	{
+		.compatible = "intel,ixp43x-pci",
+	},
+	{},
+};
+
+/*
+ * This driver needs to be a builtin module with suppressed bind
+ * attributes since the probe() is initializing a hard exception
+ * handler and this can only be done from __init-tagged code
+ * sections. This module cannot be removed and inserted at all.
+ */
+static struct platform_driver ixp4xx_pci_driver = {
+	.driver = {
+		.name = "ixp4xx-pci",
+		.suppress_bind_attrs = true,
+		.of_match_table = ixp4xx_pci_of_match,
+	},
+};
+builtin_platform_driver_probe(ixp4xx_pci_driver, ixp4xx_pci_probe);

drivers/soc/imx/soc-imx.c

···
 	case MXC_CPU_MX35:
 		soc_id = "i.MX35";
 		break;
+	case MXC_CPU_MX50:
+		soc_id = "i.MX50";
+		break;
 	case MXC_CPU_MX51:
 		ocotp_compat = "fsl,imx51-iim";
 		soc_id = "i.MX51";

drivers/soc/ixp4xx/ixp4xx-npe.c

···
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/soc/ixp4xx/npe.h>
+#include <mach/hardware.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 #define DEBUG_MSG			0
 #define DEBUG_FW			0

drivers/soc/ixp4xx/ixp4xx-qmgr.c

···
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/soc/ixp4xx/qmgr.h>
+#include <mach/hardware.h>
+#include <linux/soc/ixp4xx/cpu.h>
 
 static struct qmgr_regs __iomem *qmgr_regs;
 static int qmgr_irq_1;

drivers/soc/tegra/Kconfig

···
 config SOC_TEGRA_PMC
 	bool
 	select GENERIC_PINCONF
+	select PM_OPP
+	select PM_GENERIC_DOMAINS
 
 config SOC_TEGRA_POWERGATE_BPMP
 	def_bool y

drivers/soc/tegra/common.c

···
  * Copyright (C) 2014 NVIDIA CORPORATION.  All rights reserved.
  */
 
+#define dev_fmt(fmt)	"tegra-soc: " fmt
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/export.h>
 #include <linux/of.h>
+#include <linux/pm_opp.h>
 
 #include <soc/tegra/common.h>
+#include <soc/tegra/fuse.h>
 
 static const struct of_device_id tegra_machine_match[] = {
 	{ .compatible = "nvidia,tegra20", },
···
 
 	return match != NULL;
 }
+
+static int tegra_core_dev_init_opp_state(struct device *dev)
+{
+	unsigned long rate;
+	struct clk *clk;
+	int err;
+
+	clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(clk)) {
+		dev_err(dev, "failed to get clk: %pe\n", clk);
+		return PTR_ERR(clk);
+	}
+
+	rate = clk_get_rate(clk);
+	if (!rate) {
+		dev_err(dev, "failed to get clk rate\n");
+		return -EINVAL;
+	}
+
+	/* first dummy rate-setting initializes voltage vote */
+	err = dev_pm_opp_set_rate(dev, rate);
+	if (err) {
+		dev_err(dev, "failed to initialize OPP clock: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+/**
+ * devm_tegra_core_dev_init_opp_table() - initialize OPP table
+ * @dev: device for which OPP table is initialized
+ * @params: pointer to the OPP table configuration
+ *
+ * This function will initialize OPP table and sync OPP state of a Tegra SoC
+ * core device.
+ *
+ * Return: 0 on success or errorno.
+ */
+int devm_tegra_core_dev_init_opp_table(struct device *dev,
+				       struct tegra_core_opp_params *params)
+{
+	u32 hw_version;
+	int err;
+
+	err = devm_pm_opp_set_clkname(dev, NULL);
+	if (err) {
+		dev_err(dev, "failed to set OPP clk: %d\n", err);
+		return err;
+	}
+
+	/* Tegra114+ doesn't support OPP yet */
+	if (!of_machine_is_compatible("nvidia,tegra20") &&
+	    !of_machine_is_compatible("nvidia,tegra30"))
+		return -ENODEV;
+
+	if (of_machine_is_compatible("nvidia,tegra20"))
+		hw_version = BIT(tegra_sku_info.soc_process_id);
+	else
+		hw_version = BIT(tegra_sku_info.soc_speedo_id);
+
+	err = devm_pm_opp_set_supported_hw(dev, &hw_version, 1);
+	if (err) {
+		dev_err(dev, "failed to set OPP supported HW: %d\n", err);
+		return err;
+	}
+
+	/*
+	 * Older device-trees have an empty OPP table, we will get
+	 * -ENODEV from devm_pm_opp_of_add_table() in this case.
+	 */
+	err = devm_pm_opp_of_add_table(dev);
+	if (err) {
+		if (err == -ENODEV)
+			dev_err_once(dev, "OPP table not found, please update device-tree\n");
+		else
+			dev_err(dev, "failed to add OPP table: %d\n", err);
+
+		return err;
+	}
+
+	if (params->init_state) {
+		err = tegra_core_dev_init_opp_state(dev);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(devm_tegra_core_dev_init_opp_table);

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

···
 		size_t size = sizeof(*fuse->lookups) * fuse->soc->num_lookups;
 
 		fuse->lookups = kmemdup(fuse->soc->lookups, size, GFP_KERNEL);
-		if (!fuse->lookups)
-			return -ENOMEM;
-
-		nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups);
+		if (fuse->lookups)
+			nvmem_add_cell_lookups(fuse->lookups, fuse->soc->num_lookups);
 	}
 
 	return 0;

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

···
     defined(CONFIG_ARCH_TEGRA_132_SOC) || \
     defined(CONFIG_ARCH_TEGRA_210_SOC) || \
     defined(CONFIG_ARCH_TEGRA_186_SOC) || \
-    defined(CONFIG_ARCH_TEGRA_194_SOC)
+    defined(CONFIG_ARCH_TEGRA_194_SOC) || \
+    defined(CONFIG_ARCH_TEGRA_234_SOC)
 static u32 tegra30_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset)
 {
 	if (WARN_ON(!fuse->base))

drivers/soc/tegra/pmc.c

···
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>
+#include <linux/pm_opp.h>
 #include <linux/reboot.h>
 #include <linux/regmap.h>
 #include <linux/reset.h>
···
 	struct irq_chip irq;
 
 	struct notifier_block clk_nb;
+
+	bool core_domain_state_synced;
+	bool core_domain_registered;
 };
 
 static struct tegra_pmc *pmc = &(struct tegra_pmc) {
···
 	return err;
 }
 
+bool tegra_pmc_core_domain_state_synced(void)
+{
+	return pmc->core_domain_state_synced;
+}
+
+static int
+tegra_pmc_core_pd_set_performance_state(struct generic_pm_domain *genpd,
+					unsigned int level)
+{
+	struct dev_pm_opp *opp;
+	int err;
+
+	opp = dev_pm_opp_find_level_ceil(&genpd->dev, &level);
+	if (IS_ERR(opp)) {
+		dev_err(&genpd->dev, "failed to find OPP for level %u: %pe\n",
+			level, opp);
+		return PTR_ERR(opp);
+	}
+
+	mutex_lock(&pmc->powergates_lock);
+	err = dev_pm_opp_set_opp(pmc->dev, opp);
+	mutex_unlock(&pmc->powergates_lock);
+
+	dev_pm_opp_put(opp);
+
+	if (err) {
+		dev_err(&genpd->dev, "failed to set voltage to %duV: %d\n",
+			level, err);
+		return err;
+	}
+
+	return 0;
+}
+
+static unsigned int
+tegra_pmc_core_pd_opp_to_performance_state(struct generic_pm_domain *genpd,
+					   struct dev_pm_opp *opp)
+{
+	return dev_pm_opp_get_level(opp);
+}
+
+static int tegra_pmc_core_pd_add(struct tegra_pmc *pmc, struct device_node *np)
+{
+	struct generic_pm_domain *genpd;
+	const char *rname = "core";
+	int err;
+
+	genpd = devm_kzalloc(pmc->dev, sizeof(*genpd), GFP_KERNEL);
+	if (!genpd)
+		return -ENOMEM;
+
+	genpd->name = np->name;
+	genpd->set_performance_state = tegra_pmc_core_pd_set_performance_state;
+	genpd->opp_to_performance_state = tegra_pmc_core_pd_opp_to_performance_state;
+
+	err = devm_pm_opp_set_regulators(pmc->dev, &rname, 1);
+	if (err)
+		return dev_err_probe(pmc->dev, err,
+				     "failed to set core OPP regulator\n");
+
+	err = pm_genpd_init(genpd, NULL, false);
+	if (err) {
+		dev_err(pmc->dev, "failed to init core genpd: %d\n", err);
+		return err;
+	}
+
+	err = of_genpd_add_provider_simple(np, genpd);
+	if (err) {
+		dev_err(pmc->dev, "failed to add core genpd: %d\n", err);
+		goto remove_genpd;
+	}
+
+	pmc->core_domain_registered = true;
+
+	return 0;
+
+remove_genpd:
+	pm_genpd_remove(genpd);
+
+	return err;
+}
+
 static int tegra_powergate_init(struct tegra_pmc *pmc,
 				struct device_node *parent)
 {
+	struct of_phandle_args child_args, parent_args;
 	struct device_node *np, *child;
 	int err = 0;
+
+	/*
+	 * Core power domain is the parent of powergate domains, hence it
+	 * should be registered first.
+	 */
+	np = of_get_child_by_name(parent, "core-domain");
+	if (np) {
+		err = tegra_pmc_core_pd_add(pmc, np);
+		of_node_put(np);
+		if (err)
+			return err;
+	}
 
 	np = of_get_child_by_name(parent, "powergates");
 	if (!np)
···
 	for_each_child_of_node(np, child) {
 		err = tegra_powergate_add(pmc, child);
 		if (err < 0) {
+			of_node_put(child);
+			break;
+		}
+
+		if (of_parse_phandle_with_args(child, "power-domains",
+					       "#power-domain-cells",
+					       0, &parent_args))
+			continue;
+
+		child_args.np = child;
+		child_args.args_count = 0;
+
+		err = of_genpd_add_subdomain(&parent_args, &child_args);
+		of_node_put(parent_args.np);
+		if (err) {
 			of_node_put(child);
 			break;
 		}
···
 	}
 
 	of_node_put(np);
+
+	np = of_get_child_by_name(parent, "core-domain");
+	if (np) {
+		of_genpd_del_provider(np);
+		of_genpd_remove_last(np);
+	}
 }
 
 static const struct tegra_io_pad_soc *
···
 	{ }
 };
 
+static void tegra_pmc_sync_state(struct device *dev)
+{
+	int err;
+
+	/*
+	 * Older device-trees don't have core PD, and thus, there are
+	 * no dependencies that will block the state syncing. We shouldn't
+	 * mark the domain as synced in this case.
+	 */
+	if (!pmc->core_domain_registered)
+		return;
+
+	pmc->core_domain_state_synced = true;
+
+	/* this is a no-op if core regulator isn't used */
+	mutex_lock(&pmc->powergates_lock);
+	err = dev_pm_opp_sync_regulators(dev);
+	mutex_unlock(&pmc->powergates_lock);
+
+	if (err)
+		dev_err(dev, "failed to sync regulators: %d\n", err);
+}
+
 static struct platform_driver tegra_pmc_driver = {
 	.driver = {
 		.name = "tegra-pmc",
···
 #if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
 		.pm = &tegra_pmc_pm_ops,
 #endif
+		.sync_state = tegra_pmc_sync_state,
 	},
 	.probe = tegra_pmc_probe,
 };

drivers/soc/tegra/regulators-tegra20.c

···
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/reboot.h>
 #include <linux/regulator/coupler.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
+
+#include <soc/tegra/pmc.h>
 
 struct tegra_regulator_coupler {
 	struct regulator_coupler coupler;
 	struct regulator_dev *core_rdev;
 	struct regulator_dev *cpu_rdev;
 	struct regulator_dev *rtc_rdev;
-	int core_min_uV;
+	struct notifier_block reboot_notifier;
+	int core_min_uV, cpu_min_uV;
+	bool sys_reboot_mode_req;
+	bool sys_reboot_mode;
 };
 
 static inline struct tegra_regulator_coupler *
···
 	int core_max_uV;
 	int core_cur_uV;
 	int err;
+
+	/*
+	 * Tegra20 SoC has critical DVFS-capable devices that are
+	 * permanently-active or active at a boot time, like EMC
+	 * (DRAM controller) or Display controller for example.
+	 *
+	 * The voltage of a CORE SoC power domain shall not be dropped below
+	 * a minimum level, which is determined by device's clock rate.
+	 * This means that we can't fully allow CORE voltage scaling until
+	 * the state of all DVFS-critical CORE devices is synced.
+	 */
+	if (tegra_pmc_core_domain_state_synced() && !tegra->sys_reboot_mode) {
+		pr_info_once("voltage state synced\n");
+		return 0;
+	}
 
 	if (tegra->core_min_uV > 0)
 		return tegra->core_min_uV;
···
 	 */
 	tegra->core_min_uV = core_max_uV;
 
-	pr_info("core minimum voltage limited to %duV\n", tegra->core_min_uV);
+	pr_info("core voltage initialized to %duV\n", tegra->core_min_uV);
 
 	return tegra->core_min_uV;
 }
···
 	if (cpu_uV < 0)
 		return cpu_uV;
 
+	/* store boot voltage level */
+	if (!tegra->cpu_min_uV)
+		tegra->cpu_min_uV = cpu_uV;
+
 	/*
 	 * CPU's regulator may not have any consumers, hence the voltage
 	 * must not be changed in that case because CPU simply won't
···
 	 */
 	if (!cpu_min_uV_consumers)
 		cpu_min_uV = cpu_uV;
+
+	/* restore boot voltage level */
+	if (tegra->sys_reboot_mode)
+		cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV);
 
 	if (cpu_min_uV > cpu_uV) {
 		err = tegra20_core_rtc_update(tegra, core_rdev, rtc_rdev,
···
 		return -EINVAL;
 	}
 
+	tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req);
+
 	if (rdev == cpu_rdev)
 		return tegra20_cpu_voltage_update(tegra, cpu_rdev,
 						  core_rdev, rtc_rdev);
···
 	pr_err("changing %s voltage not permitted\n", rdev_get_name(rtc_rdev));
 
 	return -EPERM;
+}
+
+static int tegra20_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra,
+					    bool sys_reboot_mode)
+{
+	int err;
+
+	if (!tegra->core_rdev || !tegra->rtc_rdev || !tegra->cpu_rdev)
+		return 0;
+
+	WRITE_ONCE(tegra->sys_reboot_mode_req, true);
+
+	/*
+	 * Some devices use CPU soft-reboot method and in this case we
+	 * should ensure that voltages are sane for the reboot by restoring
+	 * the minimum boot levels.
+	 */
+	err = regulator_sync_voltage_rdev(tegra->cpu_rdev);
+	if (err)
+		return err;
+
+	err = regulator_sync_voltage_rdev(tegra->core_rdev);
+	if (err)
+		return err;
+
+	WRITE_ONCE(tegra->sys_reboot_mode_req, sys_reboot_mode);
+
+	return 0;
+}
+
+static int tegra20_regulator_reboot(struct notifier_block *notifier,
+				    unsigned long event, void *cmd)
+{
+	struct tegra_regulator_coupler *tegra;
+	int ret;
+
+	if (event != SYS_RESTART)
+		return NOTIFY_DONE;
+
+	tegra = container_of(notifier, struct tegra_regulator_coupler,
+			     reboot_notifier);
+
+	ret = tegra20_regulator_prepare_reboot(tegra, true);
+
+	return notifier_from_errno(ret);
 }
 
 static int tegra20_regulator_attach(struct regulator_coupler *coupler,
···
 {
 	struct tegra_regulator_coupler *tegra = to_tegra_coupler(coupler);
 
+	/*
+	 * We don't expect regulators to be decoupled during reboot,
+	 * this may race with the reboot handler and shouldn't ever
+	 * happen in practice.
+	 */
+	if (WARN_ON_ONCE(system_state > SYSTEM_RUNNING))
+		return -EPERM;
+
 	if (tegra->core_rdev == rdev) {
 		tegra->core_rdev = NULL;
 		return 0;
···
 		.detach_regulator = tegra20_regulator_detach,
 		.balance_voltage = tegra20_regulator_balance_voltage,
 	},
+	.reboot_notifier.notifier_call = tegra20_regulator_reboot,
 };
 
 static int __init tegra_regulator_coupler_init(void)
 {
+	int err;
+
 	if (!of_machine_is_compatible("nvidia,tegra20"))
 		return 0;
+
+	err = register_reboot_notifier(&tegra20_coupler.reboot_notifier);
+	WARN_ON(err);
 
 	return regulator_coupler_register(&tegra20_coupler.coupler);
 }

drivers/soc/tegra/regulators-tegra30.c

···
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/of.h>
+#include <linux/reboot.h>
 #include <linux/regulator/coupler.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 
 #include <soc/tegra/fuse.h>
+#include <soc/tegra/pmc.h>
 
 struct tegra_regulator_coupler {
 	struct regulator_coupler coupler;
 	struct regulator_dev *core_rdev;
 	struct regulator_dev *cpu_rdev;
-	int core_min_uV;
+	struct notifier_block reboot_notifier;
+	int core_min_uV, cpu_min_uV;
+	bool sys_reboot_mode_req;
+	bool sys_reboot_mode;
 };
 
 static inline struct tegra_regulator_coupler *
···
 	int core_max_uV;
 	int core_cur_uV;
 	int err;
+
+	/*
+	 * Tegra30 SoC has critical DVFS-capable devices that are
+	 * permanently-active or active at a boot time, like EMC
+	 * (DRAM controller) or Display controller for example.
+	 *
+	 * The voltage of a CORE SoC power domain shall not be dropped below
+	 * a minimum level, which is determined by device's clock rate.
+	 * This means that we can't fully allow CORE voltage scaling until
+	 * the state of all DVFS-critical CORE devices is synced.
+	 */
+	if (tegra_pmc_core_domain_state_synced() && !tegra->sys_reboot_mode) {
+		pr_info_once("voltage state synced\n");
+		return 0;
+	}
 
 	if (tegra->core_min_uV > 0)
 		return tegra->core_min_uV;
···
 	 */
 	tegra->core_min_uV = core_max_uV;
 
-	pr_info("core minimum voltage limited to %duV\n", tegra->core_min_uV);
+	pr_info("core voltage initialized to %duV\n", tegra->core_min_uV);
 
 	return tegra->core_min_uV;
 }
···
 	if (cpu_uV < 0)
 		return cpu_uV;
 
+	/* store boot voltage level */
+	if (!tegra->cpu_min_uV)
+		tegra->cpu_min_uV = cpu_uV;
+
 	/*
 	 * CPU's regulator may not have any consumers, hence the voltage
 	 * must not be changed in that case because CPU simply won't
···
 	err = regulator_check_voltage(core_rdev, &core_min_uV, &core_max_uV);
 	if (err)
 		return err;
+
+	/* restore boot voltage level */
+	if (tegra->sys_reboot_mode)
+		cpu_min_uV = max(cpu_min_uV, tegra->cpu_min_uV);
 
 	if (core_min_limited_uV > core_uV) {
 		pr_err("core voltage constraint violated: %d %d %d\n",
···
 		return -EINVAL;
 	}
 
+	tegra->sys_reboot_mode = READ_ONCE(tegra->sys_reboot_mode_req);
+
 	return tegra30_voltage_update(tegra, cpu_rdev, core_rdev);
+}
+
+static int tegra30_regulator_prepare_reboot(struct tegra_regulator_coupler *tegra,
+					    bool sys_reboot_mode)
+{
+	int err;
+
+	if (!tegra->core_rdev || !tegra->cpu_rdev)
+		return 0;
+
+	WRITE_ONCE(tegra->sys_reboot_mode_req, true);
+
+	/*
+	 * Some devices use CPU soft-reboot method and in this case we
+	 * should ensure that voltages are sane for the reboot by restoring
+	 * the minimum boot levels.
+	 */
+	err = regulator_sync_voltage_rdev(tegra->cpu_rdev);
+	if (err)
+		return err;
+
+	err = regulator_sync_voltage_rdev(tegra->core_rdev);
+	if (err)
+		return err;
+
+	WRITE_ONCE(tegra->sys_reboot_mode_req, sys_reboot_mode);
+
+	return 0;
+}
+
+static int tegra30_regulator_reboot(struct notifier_block *notifier,
+				    unsigned long event, void *cmd)
+{
+	struct tegra_regulator_coupler *tegra;
+	int ret;
+
+	if (event != SYS_RESTART)
+		return NOTIFY_DONE;
+
+	tegra = container_of(notifier, struct tegra_regulator_coupler,
+			     reboot_notifier);
+
+	ret = tegra30_regulator_prepare_reboot(tegra, true);
+
+	return notifier_from_errno(ret);
 }
 
 static int tegra30_regulator_attach(struct regulator_coupler *coupler,
···
 {
 	struct tegra_regulator_coupler *tegra = to_tegra_coupler(coupler);
 
+	/*
+	 * We don't expect regulators to be decoupled during reboot,
+	 * this may race with the reboot handler and shouldn't ever
+	 * happen in practice.
+	 */
+	if (WARN_ON_ONCE(system_state > SYSTEM_RUNNING))
+		return -EPERM;
+
 	if (tegra->core_rdev == rdev) {
 		tegra->core_rdev = NULL;
 		return 0;
···
 		.detach_regulator = tegra30_regulator_detach,
 		.balance_voltage = tegra30_regulator_balance_voltage,
 	},
+	.reboot_notifier.notifier_call = tegra30_regulator_reboot,
 };
 
 static int __init tegra_regulator_coupler_init(void)
 {
+	int err;
+
 	if (!of_machine_is_compatible("nvidia,tegra30"))
 		return 0;
+
+	err = register_reboot_notifier(&tegra30_coupler.reboot_notifier);
+	WARN_ON(err);
 
 	return regulator_coupler_register(&tegra30_coupler.coupler);
 }

include/linux/platform_data/pata_ixp4xx_cf.h

···
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PLATFORM_DATA_PATA_IXP4XX_H
+#define __PLATFORM_DATA_PATA_IXP4XX_H
+
+#include <linux/types.h>
+
+/*
+ * This structure provide a means for the board setup code
+ * to give information to th pata_ixp4xx driver. It is
+ * passed as platform_data.
+ */
+struct ixp4xx_pata_data {
+	volatile u32	*cs0_cfg;
+	volatile u32	*cs1_cfg;
+	unsigned long	cs0_bits;
+	unsigned long	cs1_bits;
+	void __iomem	*cs0;
+	void __iomem	*cs1;
+};
+
+#endif

include/linux/soc/ixp4xx/cpu.h

···
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * IXP4XX cpu type detection
+ *
+ * Copyright (C) 2007 MontaVista Software, Inc.
+ */
+
+#ifndef __SOC_IXP4XX_CPU_H__
+#define __SOC_IXP4XX_CPU_H__
+
+#include <linux/io.h>
+#ifdef CONFIG_ARM
+#include <asm/cputype.h>
+#endif
+
+/* Processor id value in CP15 Register 0 */
+#define IXP42X_PROCESSOR_ID_VALUE	0x690541c0 /* including unused 0x690541Ex */
+#define IXP42X_PROCESSOR_ID_MASK	0xffffffc0
+
+#define IXP43X_PROCESSOR_ID_VALUE	0x69054040
+#define IXP43X_PROCESSOR_ID_MASK	0xfffffff0
+
+#define IXP46X_PROCESSOR_ID_VALUE	0x69054200 /* including IXP455 */
+#define IXP46X_PROCESSOR_ID_MASK	0xfffffff0
+
+/* "fuse" bits of IXP_EXP_CFG2 */
+/* All IXP4xx CPUs */
+#define IXP4XX_FEATURE_RCOMP		(1 << 0)
+#define IXP4XX_FEATURE_USB_DEVICE	(1 << 1)
+#define IXP4XX_FEATURE_HASH		(1 << 2)
+#define IXP4XX_FEATURE_AES		(1 << 3)
+#define IXP4XX_FEATURE_DES		(1 << 4)
+#define IXP4XX_FEATURE_HDLC		(1 << 5)
+#define IXP4XX_FEATURE_AAL		(1 << 6)
+#define IXP4XX_FEATURE_HSS		(1 << 7)
+#define IXP4XX_FEATURE_UTOPIA		(1 << 8)
+#define IXP4XX_FEATURE_NPEB_ETH0	(1 << 9)
+#define IXP4XX_FEATURE_NPEC_ETH		(1 << 10)
+#define IXP4XX_FEATURE_RESET_NPEA	(1 << 11)
+#define IXP4XX_FEATURE_RESET_NPEB	(1 << 12)
+#define IXP4XX_FEATURE_RESET_NPEC	(1 << 13)
+#define IXP4XX_FEATURE_PCI		(1 << 14)
+#define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT	(3 << 16)
+#define IXP4XX_FEATURE_XSCALE_MAX_FREQ	(3 << 22)
+#define IXP42X_FEATURE_MASK		(IXP4XX_FEATURE_RCOMP            | \
+					 IXP4XX_FEATURE_USB_DEVICE       | \
+					 IXP4XX_FEATURE_HASH             | \
+					 IXP4XX_FEATURE_AES              | \
+					 IXP4XX_FEATURE_DES              | \
+					 IXP4XX_FEATURE_HDLC             | \
+					 IXP4XX_FEATURE_AAL              | \
+					 IXP4XX_FEATURE_HSS              | \
+					 IXP4XX_FEATURE_UTOPIA           | \
+					 IXP4XX_FEATURE_NPEB_ETH0        | \
+					 IXP4XX_FEATURE_NPEC_ETH         | \
+					 IXP4XX_FEATURE_RESET_NPEA       | \
+					 IXP4XX_FEATURE_RESET_NPEB       | \
+					 IXP4XX_FEATURE_RESET_NPEC       | \
+					 IXP4XX_FEATURE_PCI              | \
+					 IXP4XX_FEATURE_UTOPIA_PHY_LIMIT | \
+					 IXP4XX_FEATURE_XSCALE_MAX_FREQ)
+
+
+/* IXP43x/46x CPUs */
+#define IXP4XX_FEATURE_ECC_TIMESYNC	(1 << 15)
+#define IXP4XX_FEATURE_USB_HOST		(1 << 18)
+#define IXP4XX_FEATURE_NPEA_ETH		(1 << 19)
+#define IXP43X_FEATURE_MASK		(IXP42X_FEATURE_MASK             | \
+					 IXP4XX_FEATURE_ECC_TIMESYNC     | \
+					 IXP4XX_FEATURE_USB_HOST         | \
+					 IXP4XX_FEATURE_NPEA_ETH)
+
+/* IXP46x CPU (including IXP455) only */
+#define IXP4XX_FEATURE_NPEB_ETH_1_TO_3	(1 << 20)
+#define IXP4XX_FEATURE_RSA		(1 << 21)
+#define IXP46X_FEATURE_MASK		(IXP43X_FEATURE_MASK             | \
+					 IXP4XX_FEATURE_NPEB_ETH_1_TO_3  | \
+					 IXP4XX_FEATURE_RSA)
+
+#ifdef CONFIG_ARCH_IXP4XX
+#define cpu_is_ixp42x_rev_a0() ((read_cpuid_id() & (IXP42X_PROCESSOR_ID_MASK | 0xF)) == \
+				IXP42X_PROCESSOR_ID_VALUE)
+#define cpu_is_ixp42x()	((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
+			 IXP42X_PROCESSOR_ID_VALUE)
+#define cpu_is_ixp43x()	((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
+			 IXP43X_PROCESSOR_ID_VALUE)
+#define cpu_is_ixp46x()	((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
+			 IXP46X_PROCESSOR_ID_VALUE)
+
+u32 ixp4xx_read_feature_bits(void);
+void ixp4xx_write_feature_bits(u32 value);
+#else
+#define cpu_is_ixp42x_rev_a0()		0
+#define cpu_is_ixp42x()			0
+#define cpu_is_ixp43x()			0
+#define cpu_is_ixp46x()			0
+static inline u32 ixp4xx_read_feature_bits(void)
+{
+	return 0;
+}
+static inline void ixp4xx_write_feature_bits(u32 value)
+{
+}
+#endif
+
+#endif  /* _ASM_ARCH_CPU_H */

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

···
 #define EXYNOS5420_FSYS2_OPTION					0x4168
 #define EXYNOS5420_PSGEN_OPTION					0x4188
 
-/* For EXYNOS_CENTRAL_SEQ_OPTION */
-#define EXYNOS5_USE_STANDBYWFI_ARM_CORE0			BIT(16)
-#define EXYNOS5_USE_STANDBYWFI_ARM_CORE1			BUT(17)
-#define EXYNOS5_USE_STANDBYWFE_ARM_CORE0			BIT(24)
-#define EXYNOS5_USE_STANDBYWFE_ARM_CORE1			BIT(25)
-
 #define EXYNOS5420_ARM_USE_STANDBY_WFI0				BIT(4)
 #define EXYNOS5420_ARM_USE_STANDBY_WFI1				BIT(5)
 #define EXYNOS5420_ARM_USE_STANDBY_WFI2				BIT(6)

include/soc/imx/cpu.h

···
 #define MXC_CPU_MX27		27
 #define MXC_CPU_MX31		31
 #define MXC_CPU_MX35		35
+#define MXC_CPU_MX50		50
 #define MXC_CPU_MX51		51
 #define MXC_CPU_MX53		53
 #define MXC_CPU_IMX6SL		0x60

include/soc/tegra/common.h

···
 #ifndef __SOC_TEGRA_COMMON_H__
 #define __SOC_TEGRA_COMMON_H__
 
+#include <linux/errno.h>
+#include <linux/types.h>
+
+struct device;
+
+/**
+ * Tegra SoC core device OPP table configuration
+ *
+ * @init_state: pre-initialize OPP state of a device
+ */
+struct tegra_core_opp_params {
+	bool init_state;
+};
+
+#ifdef CONFIG_ARCH_TEGRA
 bool soc_is_tegra(void);
+
+int devm_tegra_core_dev_init_opp_table(struct device *dev,
+				       struct tegra_core_opp_params *params);
+#else
+static inline bool soc_is_tegra(void)
+{
+	return false;
+}
+
+static inline int
+devm_tegra_core_dev_init_opp_table(struct device *dev,
+				   struct tegra_core_opp_params *params)
+{
+	return -ENODEV;
+}
+#endif
 
 #endif /* __SOC_TEGRA_COMMON_H__ */

include/soc/tegra/fuse.h

···
 	enum tegra_revision revision;
 };
 
+#ifdef CONFIG_ARCH_TEGRA
+extern struct tegra_sku_info tegra_sku_info;
 u32 tegra_read_straps(void);
 u32 tegra_read_ram_code(void);
 int tegra_fuse_readl(unsigned long offset, u32 *value);
-
-#ifdef CONFIG_ARCH_TEGRA
-extern struct tegra_sku_info tegra_sku_info;
 #else
 static struct tegra_sku_info tegra_sku_info __maybe_unused;
+
+static inline u32 tegra_read_straps(void)
+{
+	return 0;
+}
+
+static inline u32 tegra_read_ram_code(void)
+{
+	return 0;
+}
+
+static inline int tegra_fuse_readl(unsigned long offset, u32 *value)
+{
+	return -ENODEV;
+}
 #endif
 
 struct device *tegra_soc_device_register(void);

include/soc/tegra/pmc.h

···
 void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode);
 void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode);
 
+bool tegra_pmc_core_domain_state_synced(void);
+
 #else
 static inline int tegra_powergate_power_on(unsigned int id)
 {
···
 
 static inline void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode)
 {
+}
+
+static inline bool tegra_pmc_core_domain_state_synced(void)
+{
+	return false;
 }
 
 #endif /* CONFIG_SOC_TEGRA_PMC */