Re: [PATCH v6 08/10] dt-bindings: sound: Add support for QMC audio

[Christophe Leroy <christophe.leroy@csgroup.eu>]

Le 17/02/2023 à 15:56, Herve Codina a écrit :
> The QMC (QUICC mutichannel controller) is a controller
> present in some PowerQUICC SoC such as MPC885.
> The QMC audio is an ASoC component that uses the QMC
> controller to transfer the audio data.
> 
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>

> ---
>   .../bindings/sound/fsl,qmc-audio.yaml         | 117 ++++++++++++++++++
>   1 file changed, 117 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
> 
> diff --git a/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
> new file mode 100644
> index 000000000000..ff5cd9241941
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
> @@ -0,0 +1,117 @@
> +# 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>;
> +            };
> +        };
> +    };