linux-kernel - Re: [PATCH v2 08/10] dt-bindings: sound: Add support for QMC audio

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Date:   Sun, 8 Jan 2023 16:16:24 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Herve Codina <herve.codina@...tlin.com>,
        Li Yang <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Qiang Zhao <qiang.zhao@....com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Nicolin Chen <nicoleotsuka@...il.com>
Cc:     linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v2 08/10] dt-bindings: sound: Add support for QMC audio

On 06/01/2023 17:37, Herve Codina wrote:
> 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@...tlin.com>
> ---
>  .../bindings/sound/fsl,qmc-audio.yaml         | 110 ++++++++++++++++++
>  1 file changed, 110 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..b3774be36c19
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/fsl,qmc-audio.yaml
> @@ -0,0 +1,110 @@
> +# 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@...tlin.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.
> +
> +properties:
> +  compatible:
> +    items:

Drop items.

> +      - 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
> +
> +      qmc-chan:

Missing vendor prefix.

> +        $ref: /schemas/types.yaml#/definitions/phandle-array

Why this is not a phandle?

> +        description: phandle to the QMC channel> +        maxItems: 1
> +
> +    required:
> +      - reg
> +      - qmc-chan
> +
> +required:
> +  - compatible
> +  - '#address-cells'
> +  - '#size-cells'
> +  - '#sound-dai-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    qmc_audio: qmc_audio {

Same problem as in previous patch.

> +        compatible = "fsl,qmc-audio";
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        #sound-dai-cells = <1>;
> +        dai@16 {
> +            reg = <16>;
> +            qmc-chan = <&scc_qmc 16>;
> +        };
> +        dai@17 {
> +            reg = <17>;
> +            qmc-chan = <&scc_qmc 17>;
> +        };
> +    };

Best regards,
Krzysztof