Re: [PATCH 02/18] ASoC: dt-bindings: mediatek,mt8365-mt6357: Add audio sound card document

[AngeloGioacchino Del Regno]

Il 26/02/24 15:01, Alexandre Mergnat ha scritto:
> Add soundcard bindings for the MT8365 SoC with the MT6357 audio codec.
>
> Signed-off-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
> ---
>   .../bindings/sound/mediatek,mt8365-mt6357.yaml     | 127 +++++++++++++++++++++
>   1 file changed, 127 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml
> new file mode 100644
> index 000000000000..f469611ec6b6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/mediatek,mt8365-mt6357.yaml
> @@ -0,0 +1,127 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/sound/mediatek,mt8365-mt6357.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Mediatek MT8365 sound card with MT6357 sound codec.
> +
> +maintainers:
> +  - Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
> +
> +description:
> +  This binding describes the MT8365 sound card.
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt8365-mt6357
> +
> +  mediatek,hp-pull-down:
> +    description:
> +      Earphone driver positive output stage short to the
> +      audio reference ground.
> +      Default value is false.
> +    type: boolean
> +
> +  mediatek,micbias0-microvolt:
> +    description: |

description: Selects MIC Bias 0 output voltage

> +      Selects MIC Bias 0 output voltage.
> +      [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v]
> +    enum: [0, 1, 2, 3, 4, 5, 6, 7]

No, you don't say 0 1 2 3 4 to a property that says "microvolt", that's simply
wrong.

mediatek,micbias0-microvolt = <2100000>;

..so you want a binding that says
enum: [ 1700000, 1800000, this, that, 2700000]

> +
> +  mediatek,micbias1-microvolt:
> +    description: |
> +      Selects MIC Bias 1 output voltage.
> +      [1.7v, 1.8v, 1.9v, 2.0v, 2.1v, 2.5v, 2.6v, 2.7v]
> +    enum: [0, 1, 2, 3, 4, 5, 6, 7]

same here.

> +
> +  mediatek,platform:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: The phandle of MT8365 ASoC platform.
> +
> +  pinctrl-names:
> +    minItems: 1
> +    items:
> +      - const: aud_default
> +      - const: aud_dmic
> +      - const: aud_miso_off
> +      - const: aud_miso_on
> +      - const: aud_mosi_off
> +      - const: aud_mosi_on
> +
> +  vaud28-supply:
> +    description:
> +      2.8 volt supply for the audio codec
> +
> +patternProperties:
> +  "^dai-link-[0-9]+$":
> +    type: object
> +    description:
> +      Container for dai-link level properties and CODEC sub-nodes.
> +
> +    properties:
> +      codec:
> +        type: object
> +        description: Holds subnode which indicates codec dai.
> +
> +        properties:
> +          sound-dai:
> +            maxItems: 1
> +            description: phandle of the codec DAI
> +
> +        additionalProperties: false
> +
> +      link-name:
> +        description:
> +          This property corresponds to the name of the BE dai-link to which
> +          we are going to update parameters in this node.
> +        items:
> +          const: 2ND I2S BE
> +
> +      sound-dai:
> +        maxItems: 1
> +        description: phandle of the CPU DAI
> +
> +    additionalProperties: false
> +
> +    required:
> +      - link-name
> +      - sound-dai
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - mediatek,platform
> +  - pinctrl-names
> +  - vaud28-supply
> +
> +examples:
> +  - |
> +    sound {
> +        compatible = "mediatek,mt8365-mt6357";
> +        mediatek,platform = <&afe>;

Please:

https://docs.kernel.org/devicetree/bindings/dts-coding-style.html

Regards,
Angelo

> +        pinctrl-names = "aud_default",
> +            "aud_dmic",
> +            "aud_miso_off",
> +            "aud_miso_on",
> +            "aud_mosi_off",
> +            "aud_mosi_on";
> +        pinctrl-0 = <&aud_default_pins>;
> +        pinctrl-1 = <&aud_dmic_pins>;
> +        pinctrl-2 = <&aud_miso_off_pins>;
> +        pinctrl-3 = <&aud_miso_on_pins>;
> +        pinctrl-4 = <&aud_mosi_off_pins>;
> +        pinctrl-5 = <&aud_mosi_on_pins>;
> +        vaud28-supply = <&mt6357_vaud28_reg>;
> +
> +        /* hdmi interface */
> +        dai-link-0 {
> +            sound-dai = <&afe>;
> +            link-name = "2ND I2S BE";
> +
> +            codec {
> +                sound-dai = <&it66121hdmitx>;
> +            };
> +        };
> +    };