xref: /openbmc/linux/Documentation/devicetree/bindings/sound/allwinner,sun4i-a10-spdif.yaml (revision b1f35dfd)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/allwinner,sun4i-a10-spdif.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner A10 S/PDIF Controller Device Tree Bindings

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Liam Girdwood <lgirdwood@gmail.com>
  - Mark Brown <broonie@kernel.org>
  - Maxime Ripard <maxime.ripard@bootlin.com>

properties:
  "#sound-dai-cells":
    const: 0

  compatible:
    oneOf:
      - const: allwinner,sun4i-a10-spdif
      - const: allwinner,sun6i-a31-spdif
      - const: allwinner,sun8i-h3-spdif
      - items:
          - const: allwinner,sun8i-a83t-spdif
          - const: allwinner,sun8i-h3-spdif
      - items:
          - const: allwinner,sun50i-a64-spdif
          - const: allwinner,sun8i-h3-spdif

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  clocks:
    items:
      - description: Bus Clock
      - description: Module Clock

  clock-names:
    items:
      - const: apb
      - const: spdif

  # Even though it only applies to subschemas under the conditionals,
  # not listing them here will trigger a warning because of the
  # additionalsProperties set to false.
  dmas: true
  dma-names: true
  resets:
    maxItems: 1

allOf:
  - if:
      properties:
        compatible:
          contains:
            enum:
              - allwinner,sun6i-a31-spdif
              - allwinner,sun8i-h3-spdif

    then:
      required:
        - resets

  - if:
      properties:
        compatible:
          contains:
            const: allwinner,sun8i-h3-spdif

    then:
      properties:
        dmas:
          description: TX DMA Channel

        dma-names:
          const: tx

    else:
      properties:
        dmas:
          items:
            - description: RX DMA Channel
            - description: TX DMA Channel

        dma-names:
          items:
            - const: rx
            - const: tx

required:
  - "#sound-dai-cells"
  - compatible
  - reg
  - interrupts
  - clocks
  - clock-names
  - dmas
  - dma-names

additionalProperties: false

examples:
  - |
    spdif: spdif@1c21000 {
        #sound-dai-cells = <0>;
        compatible = "allwinner,sun4i-a10-spdif";
        reg = <0x01c21000 0x40>;
        interrupts = <13>;
        clocks = <&apb0_gates 1>, <&spdif_clk>;
        clock-names = "apb", "spdif";
        dmas = <&dma 0 2>, <&dma 0 2>;
        dma-names = "rx", "tx";
    };

...