ASoC: dt-bindings: meson: convert axg spdif output to schema

* Amlogic Audio SPDIF Output

Required properties:

- compatible: 'amlogic,axg-spdifout' or

	      'amlogic,g12a-spdifout' or

	      'amlogic,sm1-spdifout'

- clocks: list of clock phandle, one for each entry clock-names.

- clock-names: should contain the following:

  * "pclk" : peripheral clock.

  * "mclk" : master clock

- #sound-dai-cells: must be 0.

Optional property:

- resets: phandle to the dedicated reset line of the spdif output.

Example on the A113 SoC:

spdifout: audio-controller@480 {

	compatible = "amlogic,axg-spdifout";

	reg = <0x0 0x480 0x0 0x50>;

	#sound-dai-cells = <0>;

	clocks = <&clkc_audio AUD_CLKID_SPDIFOUT>,

		 <&clkc_audio AUD_CLKID_SPDIFOUT_CLK>;

	clock-names = "pclk", "mclk";

};

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

%YAML 1.2

---

$id: http://devicetree.org/schemas/sound/amlogic,axg-spdifout.yaml#

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

title: Amlogic Audio AXG SPDIF Output

maintainers:

  - Jerome Brunet <jbrunet@baylibre.com>

properties:

  compatible:

    oneOf:

      - const: amlogic,axg-spdifout

      - items:

          - enum:

              - amlogic,g12a-spdifout

              - amlogic,sm1-spdifout

          - const: amlogic,axg-spdifout

  reg:

    maxItems: 1

  "#sound-dai-cells":

    const: 0

  clocks:

    items:

      - description: Peripheral clock

      - description: SPDIF output master clock

  clock-names:

    items:

      - const: pclk

      - const: mclk

  resets:

    maxItems: 1

required:

  - compatible

  - reg

  - "#sound-dai-cells"

  - clocks

  - clock-names

allOf:

  - $ref: dai-common.yaml#

  - if:

      properties:

        compatible:

          contains:

            enum:

              - amlogic,g12a-spdifout

              - amlogic,sm1-spdifout

    then:

      required:

        - resets

    else:

      properties:

        resets: false

unevaluatedProperties: false

examples:

  - |

    #include <dt-bindings/clock/axg-audio-clkc.h>

    audio-controller@480 {

        compatible = "amlogic,axg-spdifout";

        reg = <0x480 0x50>;

        #sound-dai-cells = <0>;

        clocks = <&clkc_audio AUD_CLKID_SPDIFOUT>,

                 <&clkc_audio AUD_CLKID_SPDIFOUT_CLK>;

        clock-names = "pclk", "mclk";

    };