[PATCH v2] ASoC: dt-bindings: Document audio OF graph dai-tdm-slot-num dai-tdm-slot-width props

Krzysztof Kozlowski krzysztof.kozlowski at linaro.org
Thu Oct 13 16:34:48 PDT 2022


On 27/09/2022 14:53, Marek Vasut wrote:
> Document dai-tdm-slot-num and dai-tdm-slot-width props as those are
> parsed by simple graph card and may therefore appear in audio OF graph
> node.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> ---
> Cc: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
> Cc: Liam Girdwood <lgirdwood at gmail.com>
> Cc: Mark Brown <broonie at kernel.org>
> Cc: Rob Herring <robh+dt at kernel.org>
> Cc: devicetree at vger.kernel.org
> Cc: alsa-devel at alsa-project.org
> To: linux-arm-kernel at lists.infradead.org
> ---
> V2: Drop the definition refs and just fill in type and description
> ---
>  .../devicetree/bindings/sound/audio-graph-port.yaml         | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
> index bc46a95ed8400..64654ceef2089 100644
> --- a/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
> +++ b/Documentation/devicetree/bindings/sound/audio-graph-port.yaml
> @@ -74,6 +74,12 @@ patternProperties:
>        convert-sample-format:
>          $ref: "/schemas/sound/dai-params.yaml#/$defs/dai-sample-format"
>  
> +      dai-tdm-slot-num:
> +        description: Number of slots in use.
> +        $ref: /schemas/types.yaml#/definitions/uint32
> +      dai-tdm-slot-width:
> +        description: Width in bits for each slot.
> +        $ref: /schemas/types.yaml#/definitions/uint32

Isn't the slot width already part of dai-tdm-slot-width-map? Number of
slots maybe as well can be deducted from number of tuples in
dai-tdm-slot-width-map?

>        dai-tdm-slot-width-map:
>          description: Mapping of sample widths to slot widths. For hardware
>            that cannot support a fixed slot width or a slot width always

Best regards,
Krzysztof




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