dt-bindings: pwm: renesas: pwm-rcar: convert bindings to json-schema

* Renesas R-Car PWM Timer Controller

Required Properties:

- compatible: should be "renesas,pwm-rcar" and one of the following.

 - "renesas,pwm-r8a7743": for RZ/G1M

 - "renesas,pwm-r8a7744": for RZ/G1N

 - "renesas,pwm-r8a7745": for RZ/G1E

 - "renesas,pwm-r8a774a1": for RZ/G2M

 - "renesas,pwm-r8a774c0": for RZ/G2E

 - "renesas,pwm-r8a7778": for R-Car M1A

 - "renesas,pwm-r8a7779": for R-Car H1

 - "renesas,pwm-r8a7790": for R-Car H2

 - "renesas,pwm-r8a7791": for R-Car M2-W

 - "renesas,pwm-r8a7794": for R-Car E2

 - "renesas,pwm-r8a7795": for R-Car H3

 - "renesas,pwm-r8a7796": for R-Car M3-W

 - "renesas,pwm-r8a77965": for R-Car M3-N

 - "renesas,pwm-r8a77970": for R-Car V3M

 - "renesas,pwm-r8a77980": for R-Car V3H

 - "renesas,pwm-r8a77990": for R-Car E3

 - "renesas,pwm-r8a77995": for R-Car D3

- reg: base address and length of the registers block for the PWM.

- #pwm-cells: should be 2. See pwm.txt in this directory for a description of

  the cells format.

- clocks: clock phandle and specifier pair.

- pinctrl-0: phandle, referring to a default pin configuration node.

- pinctrl-names: Set to "default".

Example: R8A7743 (RZ/G1M) PWM Timer node

	pwm0: pwm@e6e30000 {

		compatible = "renesas,pwm-r8a7743", "renesas,pwm-rcar";

		reg = <0 0xe6e30000 0 0x8>;

		clocks = <&cpg CPG_MOD 523>;

		power-domains = <&sysc R8A7743_PD_ALWAYS_ON>;

		resets = <&cpg 523>;

		#pwm-cells = <2>;

		pinctrl-0 = <&pwm0_pins>;

		pinctrl-names = "default";

	};

# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/pwm/renesas,pwm-rcar.yaml#

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

title: Renesas R-Car PWM Timer Controller

maintainers:

  - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

properties:

  compatible:

    items:

      - enum:

          - renesas,pwm-r8a7743   # RZ/G1M

          - renesas,pwm-r8a7744   # RZ/G1N

          - renesas,pwm-r8a7745   # RZ/G1E

          - renesas,pwm-r8a77470  # RZ/G1C

          - renesas,pwm-r8a774a1  # RZ/G2M

          - renesas,pwm-r8a774c0  # RZ/G2E

          - renesas,pwm-r8a7778   # R-Car M1A

          - renesas,pwm-r8a7779   # R-Car H1

          - renesas,pwm-r8a7790   # R-Car H2

          - renesas,pwm-r8a7791   # R-Car M2-W

          - renesas,pwm-r8a7794   # R-Car E2

          - renesas,pwm-r8a7795   # R-Car H3

          - renesas,pwm-r8a7796   # R-Car M3-W

          - renesas,pwm-r8a77965  # R-Car M3-N

          - renesas,pwm-r8a77970  # R-Car V3M

          - renesas,pwm-r8a77980  # R-Car V3H

          - renesas,pwm-r8a77990  # R-Car E3

          - renesas,pwm-r8a77995  # R-Car D3

      - const: renesas,pwm-rcar

  reg:

    # base address and length of the registers block for the PWM.

    maxItems: 1

  '#pwm-cells':

    # should be 2. See pwm.txt in this directory for a description of

    # the cells format.

    const: 2

  clocks:

    # clock phandle and specifier pair.

    maxItems: 1

  power-domains:

    maxItems: 1

  resets:

    maxItems: 1

required:

  - compatible

  - reg

  - '#pwm-cells'

  - clocks

additionalProperties: false

examples:

  - |

    #include <dt-bindings/clock/r8a7743-cpg-mssr.h>

    #include <dt-bindings/power/r8a7743-sysc.h>

    pwm0: pwm@e6e30000 {

        compatible = "renesas,pwm-r8a7743", "renesas,pwm-rcar";

        reg = <0 0xe6e30000 0 0x8>;

        clocks = <&cpg CPG_MOD 523>;

        power-domains = <&sysc R8A7743_PD_ALWAYS_ON>;

        resets = <&cpg 523>;

        #pwm-cells = <2>;

        pinctrl-0 = <&pwm0_pins>;

        pinctrl-names = "default";

    };