linux-kernel - Re: [PATCH v2 1/7] ASoC: dt-bindings: sun8i-codec: Increase #sound-dai-cells

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Date:   Wed, 13 Jan 2021 09:48:22 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/7] ASoC: dt-bindings: sun8i-codec: Increase
 #sound-dai-cells

Hi,

On Wed, Jan 13, 2021 at 12:06:09AM -0600, Samuel Holland wrote:
> Increase sound-dai-cells to 1 to allow using the DAIs in the codec
> corresponding to AIF2 and AIF3.
> 
> The generic ASoC OF code supports a #sound-dai-cells value of 0 or 1
> with no impact to the driver, so this is a backward-compatible change.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
>  .../devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml  | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> index 67405e6d8168..3e02baa1d9ce 100644
> --- a/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> +++ b/Documentation/devicetree/bindings/sound/allwinner,sun8i-a33-codec.yaml
> @@ -12,7 +12,7 @@ maintainers:
>  
>  properties:
>    "#sound-dai-cells":
> -    const: 0
> +    const: 1

We should make it clearer that 0 is still ok, but is deprecated

You can do it with:

oneOf:
  - const: 1
  - const: 0
    deprecated: true
    description: >
      Whatever

Maxime

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