linux-kernel - Re: [PATCH v2 1/2] ASoC: mediatek: dt-bindings: modify machine bindings for two MICs case

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Date:   Fri, 28 Oct 2022 13:58:10 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Ajye Huang <ajye_huang@...pal.corp-partner.google.com>,
        linux-kernel@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-mediatek@...ts.infradead.org,
        "chunxu . li" <chunxu.li@...iatek.com>,
        Takashi Iwai <tiwai@...e.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH v2 1/2] ASoC: mediatek: dt-bindings: modify machine
 bindings for two MICs case

On 28/10/2022 13:22, Ajye Huang wrote:
> Add a property "dmic-gpios" for switching between two MICs.

Use subject prefixes matching the subsystem (git log --oneline -- ...).

> 
> Signed-off-by: Ajye Huang <ajye_huang@...pal.corp-partner.google.com>
> ---
>  .../bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml        | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
> index 4fc5b045d3cf..212d2982590a 100644
> --- a/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
> +++ b/Documentation/devicetree/bindings/sound/mt8186-mt6366-rt1019-rt5682s.yaml
> @@ -21,6 +21,10 @@ properties:
>      $ref: "/schemas/types.yaml#/definitions/phandle"
>      description: The phandle of MT8186 ASoC platform.
>  
> +  dmic-gpios:
> +    maxItems: 1
> +    description: GPIO for switching between DMICs

Switching how? Enabling? What is the meaning of each GPIO pin value?

> +
>    headset-codec:
>      type: object
>      additionalProperties: false
> @@ -72,6 +76,8 @@ examples:
>          pinctrl-0 = <&aud_clk_mosi_off>;
>          pinctrl-1 = <&aud_clk_mosi_on>;
>  
> +        dmic-gpios = <&pio 23 0>;

Use defines for flags.

Best regards,
Krzysztof