linux-kernel - Re: [PATCH v3 6/6] ASoC: qdsp6: dt-bindings: Add q6afe pcm dt binding documentation

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Date:   Wed, 12 Feb 2020 09:59:55 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Adam Serbinski <adam@...binski.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Patrick Lai <plai@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 6/6] ASoC: qdsp6: dt-bindings: Add q6afe pcm dt binding
 documentation



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@...binski.com>
> CC: Andy Gross <agross@...nel.org>
> CC: Mark Rutland <mark.rutland@....com>
> CC: Liam Girdwood <lgirdwood@...il.com>
> CC: Patrick Lai <plai@...eaurora.org>
> CC: Banajit Goswami <bgoswami@...eaurora.org>
> CC: Jaroslav Kysela <perex@...ex.cz>
> CC: Takashi Iwai <tiwai@...e.com>
> CC: alsa-devel@...a-project.org
> CC: linux-arm-msm@...r.kernel.org
> CC: devicetree@...r.kernel.org
> CC: linux-kernel@...r.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@4 {
>   			reg = <23>;
>   			qcom,sd-lines = <1>;
>   		};
> +
> +		pri-pcm-rx@105 {
> +			reg = <105>;
> +			qcom,pcm-quantype = <2>;
> +			qcom,pcm-slot-mapping = <1>;
> +		};
> +
> +		pri-pcm-tx@106 {
> +			reg = <106>;
> +			qcom,pcm-quantype = <2>;
> +			qcom,pcm-slot-mapping = <1>;
> +		};
> +
> +		quat-pcm-rx@111 {
> +			reg = <111>;
> +			qcom,pcm-quantype = <5>;
> +			qcom,pcm-slot-mapping = <0 0 1>;
> +		};
> +
> +		quat-pcm-tx@112 {
> +			reg = <112>;
> +			qcom,pcm-quantype = <5>;
> +			qcom,pcm-slot-mapping = <0 0 1>;
> +		};
>   	};
>   };
>