[alsa-devel] [PATCH v3 6/6] ASoC: qdsp6: dt-bindings: Add q6afe pcm dt binding documentation

[Srinivas Kandagatla]

On 12/02/2020 01:52, Adam Serbinski wrote:
> This patch adds documentation of bindings required for PCM ports on AFE.
> 
> Signed-off-by: Adam Serbinski <adam at serbinski.com>
> CC: Andy Gross <agross at kernel.org>
> CC: Mark Rutland <mark.rutland at arm.com>
> CC: Liam Girdwood <lgirdwood at gmail.com>
> CC: Patrick Lai <plai at codeaurora.org>
> CC: Banajit Goswami <bgoswami at codeaurora.org>
> CC: Jaroslav Kysela <perex at perex.cz>
> CC: Takashi Iwai <tiwai at suse.com>
> CC: alsa-devel at alsa-project.org
> CC: linux-arm-msm at vger.kernel.org
> CC: devicetree at vger.kernel.org
> CC: linux-kernel at vger.kernel.org
> ---
>   .../devicetree/bindings/sound/qcom,q6afe.txt  | 42 +++++++++++++++++++
>   1 file changed, 42 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/qcom,q6afe.txt b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
> index d74888b9f1bb..6b1b17d31a2a 100644
> --- a/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
> +++ b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
> @@ -51,6 +51,24 @@ configuration of each dai. Must contain the following properties.
>   	Definition: Must be list of serial data lines used by this dai.
>   	should be one or more of the 0-3 sd lines.
>   
> + - qcom,pcm-quantype
> +	Usage: required for pcm interface
> +	Value type: <u32>
> +	Definition: PCM quantization type
> +		0 - ALAW, no padding
> +		1 - MULAW, no padding
> +		2 - Linear, no padding
> +		3 - ALAW, padding
> +		4 - MULAW, padding
> +		5 - Linear, padding
> +
> + - qcom,pcm-slot-mapping
> +	Usage: required for pcm interface

Are these not specific to 8k and 16k mode ?
We should probably list values for both modes here.

--srini

> +	Value type: <prop-encoded-array>
> +	Definition: Slot mapping for audio channels. Array size is the number
> +		of slots, minimum 1, maximum 4. The value is 0 for no mapping
> +		to the slot, or the channel number from 1 to 32.
> +
>    - qcom,tdm-sync-mode:
>   	Usage: required for tdm interface
>   	Value type: <prop-encoded-array>
> @@ -174,5 +192,29 @@ q6afe at 4 {
>   			reg = <23>;
>   			qcom,sd-lines = <1>;
>   		};
> +
> +		pri-pcm-rx at 105 {
> +			reg = <105>;
> +			qcom,pcm-quantype = <2>;
> +			qcom,pcm-slot-mapping = <1>;
> +		};
> +
> +		pri-pcm-tx at 106 {
> +			reg = <106>;
> +			qcom,pcm-quantype = <2>;
> +			qcom,pcm-slot-mapping = <1>;
> +		};
> +
> +		quat-pcm-rx at 111 {
> +			reg = <111>;
> +			qcom,pcm-quantype = <5>;
> +			qcom,pcm-slot-mapping = <0 0 1>;
> +		};
> +
> +		quat-pcm-tx at 112 {
> +			reg = <112>;
> +			qcom,pcm-quantype = <5>;
> +			qcom,pcm-slot-mapping = <0 0 1>;
> +		};
>   	};
>   };
>