Documentation/devicetree/bindings/sound/snps,designware-i2s.yaml

# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/snps,designware-i2s.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: DesignWare I2S controller

maintainers:
  - Jose Abreu <joabreu@synopsys.com>

properties:
  compatible:
    oneOf:
      - items:
          - const: canaan,k210-i2s
          - const: snps,designware-i2s
      - enum:
          - snps,designware-i2s

  reg:
    maxItems: 1

  interrupts:
    description: |
      The interrupt line number for the I2S controller. Add this
      parameter if the I2S controller that you are using does not
      support DMA.
    maxItems: 1

  clocks:
    description: Sampling rate reference clock
    maxItems: 1

  clock-names:
    const: i2sclk

  resets:
    maxItems: 1

  dmas:
    items:
      - description: TX DMA Channel
      - description: RX DMA Channel
    minItems: 1

  dma-names:
    items:
      - const: tx
      - const: rx
    minItems: 1

if:
  properties:
    compatible:
      contains:
        const: canaan,k210-i2s

then:
  properties:
    "#sound-dai-cells":
      const: 1

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

required:
  - compatible
  - reg
  - clocks
  - clock-names

oneOf:
  - required:
      - dmas
      - dma-names
  - required:
      - interrupts

unevaluatedProperties: false

examples:
  - |
    soc_i2s: i2s@7ff90000 {
      compatible = "snps,designware-i2s";
      reg = <0x7ff90000 0x1000>;
      clocks = <&scpi_i2sclk 0>;
      clock-names = "i2sclk";
      #sound-dai-cells = <0>;
      dmas = <&dma0 5>;
      dma-names = "tx";
    };