dt-bindings: phy: renesas,rcar-gen3-pcie-phy: Convert to json-schema

* Renesas R-Car generation 3 PCIe PHY

This file provides information on what the device node for the R-Car

generation 3 PCIe PHY contains.

Required properties:

- compatible: "renesas,r8a77980-pcie-phy" if the device is a part of the

	      R8A77980 SoC.

- reg: offset and length of the register block.

- clocks: clock phandle and specifier pair.

- power-domains: power domain phandle and specifier pair.

- resets: reset phandle and specifier pair.

- #phy-cells: see phy-bindings.txt in the same directory, must be <0>.

Example (R-Car V3H):

	pcie-phy@e65d0000 {

		compatible = "renesas,r8a77980-pcie-phy";

		reg = <0 0xe65d0000 0 0x8000>;

		#phy-cells = <0>;

		clocks = <&cpg CPG_MOD 319>;

		power-domains = <&sysc 32>;

		resets = <&cpg 319>;

	};

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/phy/renesas,rcar-gen3-pcie-phy.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas R-Car Generation 3 PCIe PHY

maintainers:

  - Sergei Shtylyov <sergei.shtylyov@gmail.com>

properties:

  compatible:

    const: renesas,r8a77980-pcie-phy

  reg:

    maxItems: 1

  clocks:

    maxItems: 1

  power-domains:

    maxItems: 1

  resets:

    maxItems: 1

  '#phy-cells':

    const: 0

required:

  - compatible

  - reg

  - clocks

  - power-domains

  - resets

  - '#phy-cells'

additionalProperties: false

examples:

  - |

    #include <dt-bindings/clock/r8a77980-cpg-mssr.h>

    #include <dt-bindings/power/r8a77980-sysc.h>

    pcie-phy@e65d0000 {

            compatible = "renesas,r8a77980-pcie-phy";

            reg = <0xe65d0000 0x8000>;

            #phy-cells = <0>;

            clocks = <&cpg CPG_MOD 319>;

            power-domains = <&sysc R8A77980_PD_ALWAYS_ON>;

            resets = <&cpg 319>;

    };