linux-kernel - Re: [PATCH 1/2] ASoC: dt-bindings: simple-card: add 'hp-pin-name-headphone' property

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Message-ID: <659ae0db-8bb2-4638-88a0-fe975f5fbd8d@kernel.org>
Date: Mon, 29 Dec 2025 12:41:40 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Shengjiu Wang <shengjiu.wang@....com>, broonie@...nel.org,
 kuninori.morimoto.gx@...esas.com, lgirdwood@...il.com, perex@...ex.cz,
 tiwai@...e.com, linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org,
 robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH 1/2] ASoC: dt-bindings: simple-card: add
 'hp-pin-name-headphone' property

On 29/12/2025 12:18, Shengjiu Wang wrote:
> The 'Headphones Jack' name used in current simple-card and audio-graph
> card driver can't be recognized by user space service daemon like
> pulseaudio and pipewire, which only recognize the 'Headphone Jack',
> so add 'hp-pin-name-headphone' property for this case and it won't block
> original use cases for 'Headphones Jack'
> 
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> ---
>  Documentation/devicetree/bindings/sound/audio-graph-card2.yaml | 3 +++
>  Documentation/devicetree/bindings/sound/audio-graph.yaml       | 3 +++
>  Documentation/devicetree/bindings/sound/simple-card.yaml       | 3 +++
>  3 files changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml b/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml
> index 40eb1d7d6cf1..803e0a960d2e 100644
> --- a/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml
> +++ b/Documentation/devicetree/bindings/sound/audio-graph-card2.yaml
> @@ -39,6 +39,9 @@ properties:
>      $ref: audio-graph.yaml#/properties/mic-det-gpios
>    widgets:
>      $ref: audio-graph.yaml#/properties/widgets
> +  hp-pin-name-headphone:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description: Specify 'Headphone' as headphone pin name.

Not a DT property. You described ASoC drivers / core code, not hardware.

Best regards,
Krzysztof