xref: /openbmc/linux/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)

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

title: QMC audio

maintainers:
  - Herve Codina <herve.codina@bootlin.com>

description: |
  The QMC audio is an ASoC component which uses QMC (QUICC Multichannel
  Controller) channels to transfer the audio data.
  It provides as many DAI as the number of QMC channel used.

allOf:
  - $ref: dai-common.yaml#

properties:
  compatible:
    const: fsl,qmc-audio

  '#address-cells':
    const: 1
  '#size-cells':
    const: 0
  '#sound-dai-cells':
    const: 1

patternProperties:
  '^dai@([0-9]|[1-5][0-9]|6[0-3])$':
    description:
      A DAI managed by this controller
    type: object

    properties:
      reg:
        minimum: 0
        maximum: 63
        description:
          The DAI number

      fsl,qmc-chan:
        $ref: /schemas/types.yaml#/definitions/phandle-array
        items:
          - items:
              - description: phandle to QMC node
              - description: Channel number
        description:
          Should be a phandle/number pair. The phandle to QMC node and the QMC
          channel to use for this DAI.

    required:
      - reg
      - fsl,qmc-chan

required:
  - compatible
  - '#address-cells'
  - '#size-cells'
  - '#sound-dai-cells'

additionalProperties: false

examples:
  - |
    audio_controller: audio-controller {
        compatible = "fsl,qmc-audio";
        #address-cells = <1>;
        #size-cells = <0>;
        #sound-dai-cells = <1>;
        dai@16 {
            reg = <16>;
            fsl,qmc-chan = <&qmc 16>;
        };
        dai@17 {
            reg = <17>;
            fsl,qmc-chan = <&qmc 17>;
        };
    };

    sound {
        compatible = "simple-audio-card";
        #address-cells = <1>;
        #size-cells = <0>;
        simple-audio-card,dai-link@0 {
            reg = <0>;
            format = "dsp_b";
            cpu {
                sound-dai = <&audio_controller 16>;
            };
            codec {
                sound-dai = <&codec1>;
                dai-tdm-slot-num = <4>;
                dai-tdm-slot-width = <8>;
                /* TS 3, 5, 7, 9 */
                dai-tdm-slot-tx-mask = <0 0 0 1 0 1 0 1 0 1>;
                dai-tdm-slot-rx-mask = <0 0 0 1 0 1 0 1 0 1>;
            };
        };
        simple-audio-card,dai-link@1 {
            reg = <1>;
            format = "dsp_b";
            cpu {
                sound-dai = <&audio_controller 17>;
            };
            codec {
                sound-dai = <&codec2>;
                dai-tdm-slot-num = <4>;
                dai-tdm-slot-width = <8>;
                /* TS 2, 4, 6, 8 */
                dai-tdm-slot-tx-mask = <0 0 1 0 1 0 1 0 1>;
                dai-tdm-slot-rx-mask = <0 0 1 0 1 0 1 0 1>;
            };
        };
    };