dt-bindings: PCI: Convert marvell,armada8k-pcie to schema

Convert the marvell,armada8k-pcie binding to DT schema. The binding
uses different names for reg, clocks, and phys which have to be added
to the common Synopsys DWC binding.

The "marvell,reset-gpio" property was not documented. Mark it deprecated
as the "reset-gpios" property can be used instead. The "msi-parent"
property was also not documented.

Signed-off-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: Manivannan Sadhasivam <[e-mail]>
Link: https://patch.msgid.link/[e-mail]

Documentation/devicetree/bindings/pci/marvell,armada8k-pcie.yaml

···
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/marvell,armada8k-pcie.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Armada 7K/8K PCIe interface
+
+maintainers:
+  - Thomas Petazzoni <[e-mail]>
+
+description:
+  This PCIe host controller is based on the Synopsys DesignWare PCIe IP.
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - marvell,armada8k-pcie
+  required:
+    - compatible
+
+allOf:
+  - $ref: snps,dw-pcie.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - marvell,armada8k-pcie
+      - const: snps,dw-pcie
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: ctrl
+      - const: config
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: core
+      - const: reg
+
+  interrupts:
+    maxItems: 1
+
+  msi-parent:
+    maxItems: 1
+
+  phys:
+    minItems: 1
+    maxItems: 4
+
+  phy-names:
+    minItems: 1
+    maxItems: 4
+
+  marvell,reset-gpio:
+    maxItems: 1
+    deprecated: true
+
+required:
+  - interrupt-map
+  - clocks
+  - msi-parent
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pcie@f2600000 {
+        compatible = "marvell,armada8k-pcie", "snps,dw-pcie";
+        reg = <0xf2600000 0x10000>, <0xf6f00000 0x80000>;
+        reg-names = "ctrl", "config";
+        #address-cells = <3>;
+        #size-cells = <2>;
+        #interrupt-cells = <1>;
+        device_type = "pci";
+        dma-coherent;
+        msi-parent = <&gic_v2m0>;
+
+        ranges = <0x81000000 0 0xf9000000 0xf9000000 0 0x10000>,  /* downstream I/O */
+                 <0x82000000 0 0xf6000000 0xf6000000 0 0xf00000>;  /* non-prefetchable memory */
+        interrupt-map-mask = <0 0 0 0>;
+        interrupt-map = <0 0 0 0 &gic 0 GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+        interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+        num-lanes = <1>;
+        clocks = <&cpm_syscon0 1 13>;
+    };
+...

Documentation/devicetree/bindings/pci/pci-armada8k.txt

···
-* Marvell Armada 7K/8K PCIe interface
-
-This PCIe host controller is based on the Synopsys DesignWare PCIe IP
-and thus inherits all the common properties defined in snps,dw-pcie.yaml.
-
-Required properties:
-- compatible: "marvell,armada8k-pcie"
-- reg: must contain two register regions
-   - the control register region
-   - the config space region
-- reg-names:
-   - "ctrl" for the control register region
-   - "config" for the config space region
-- interrupts: Interrupt specifier for the PCIe controller
-- clocks: reference to the PCIe controller clocks
-- clock-names: mandatory if there is a second clock, in this case the
-   name must be "core" for the first clock and "reg" for the second
-   one
-
-Optional properties:
-- phys: phandle(s) to PHY node(s) following the generic PHY bindings.
-	Either 1, 2 or 4 PHYs might be needed depending on the number of
-	PCIe lanes.
-- phy-names: names of the PHYs corresponding to the number of lanes.
-	Must be "cp0-pcie0-x4-lane0-phy", "cp0-pcie0-x4-lane1-phy" for
-	2 PHYs.
-
-Example:
-
-	pcie@f2600000 {
-		compatible = "marvell,armada8k-pcie", "snps,dw-pcie";
-		reg = <0 0xf2600000 0 0x10000>, <0 0xf6f00000 0 0x80000>;
-		reg-names = "ctrl", "config";
-		#address-cells = <3>;
-		#size-cells = <2>;
-		#interrupt-cells = <1>;
-		device_type = "pci";
-		dma-coherent;
-
-		bus-range = <0 0xff>;
-		ranges = <0x81000000 0 0xf9000000 0  0xf9000000 0 0x10000	/* downstream I/O */
-			  0x82000000 0 0xf6000000 0  0xf6000000 0 0xf00000>;	/* non-prefetchable memory */
-		interrupt-map-mask = <0 0 0 0>;
-		interrupt-map = <0 0 0 0 &gic 0 GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
-		interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
-		num-lanes = <1>;
-		clocks = <&cpm_syscon0 1 13>;
-	};

Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml

···
             above for new bindings.
           oneOf:
             - description: See native 'dbi' clock for details
-              enum: [ pcie, pcie_apb_sys, aclk_dbi ]
+              enum: [ pcie, pcie_apb_sys, aclk_dbi, reg ]
             - description: See native 'mstr/slv' clock for details
               enum: [ pcie_bus, pcie_inbound_axi, pcie_aclk, aclk_mst, aclk_slv ]
             - description: See native 'pipe' clock for details
···
           oneOf:
             - pattern: '^pcie(-?phy[0-9]*)?$'
             - pattern: '^p2u-[0-7]$'
+            - pattern: '^cp[01]-pcie[0-2]-x[124](-lane[0-3])?-phy$'  # marvell,armada8k-pcie
 
   reset-gpio:
     deprecated: true

Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml

···
             Vendor-specific CSR names. Consider using the generic names above
             for new bindings.
           oneOf:
+            - description: See native 'dbi' CSR region for details.
+              enum: [ ctrl ]
             - description: See native 'elbi/app' CSR region for details.
               enum: [ apb, mgmt, link, ulreg, appl ]
             - description: See native 'atu' CSR region for details.
···
               const: slcr
     allOf:
       - contains:
-          const: dbi
+          enum: [ dbi, ctrl ]
       - contains:
           const: config
 

MAINTAINERS

···
 L:	[e-mail]
 L:	[e-mail] (moderated for non-subscribers)
 S:	Maintained
-F:	Documentation/devicetree/bindings/pci/pci-armada8k.txt
+F:	Documentation/devicetree/bindings/pci/marvell,armada8k-pcie.yaml
 F:	drivers/pci/controller/dwc/pcie-armada8k.c
 
 PCI DRIVER FOR CADENCE PCIE IP