linux-kernel - Re: [PATCH] ASoC: dt-bindings: Adjust #sound-dai-cells on TI's single-DAI codecs

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Message-ID: <baf338a7-1e63-4842-32a1-8f63f850bd2d@linaro.org>
Date:   Wed, 10 May 2023 09:17:33 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Martin Povišer <povik+lin@...ebit.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Andrew Davis <afd@...com>, Shi Fu <shifu0704@...ndersoft.com>,
        Shenghao Ding <shenghao-ding@...com>, kevin-lu@...com,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, asahi@...ts.linux.dev
Subject: Re: [PATCH] ASoC: dt-bindings: Adjust #sound-dai-cells on TI's
 single-DAI codecs

On 09/05/2023 17:34, Martin Povišer wrote:
> A bunch of TI's codecs have binding schemas which force #sound-dai-cells
> to one despite those codecs only having a single DAI. Allow for bindings
> with zero DAI cells and deprecate the former non-zero value.
> 
> Signed-off-by: Martin Povišer <povik+lin@...ebit.org>
> ---
>  Documentation/devicetree/bindings/sound/tas2562.yaml | 6 ++++--
>  Documentation/devicetree/bindings/sound/tas2770.yaml | 6 ++++--
>  Documentation/devicetree/bindings/sound/tas27xx.yaml | 6 ++++--
>  3 files changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/tas2562.yaml b/Documentation/devicetree/bindings/sound/tas2562.yaml
> index a5bb561bfcfb..31a3024ea789 100644
> --- a/Documentation/devicetree/bindings/sound/tas2562.yaml
> +++ b/Documentation/devicetree/bindings/sound/tas2562.yaml
> @@ -55,7 +55,9 @@ properties:
>      description: TDM TX current sense time slot.
>  
>    '#sound-dai-cells':
> -    const: 1
> +    # The codec has a single DAI, the #sound-dai-cells=<1>; case is left in for backward
> +    # compatibility but is deprecated.
> +    enum: [0, 1]

Does it? I see playback and capture.

Best regards,
Krzysztof