linux-kernel - Re: [PATCH v6 04/24] ASoC: qdsp6: dt-bindings: Add q6afe dt bindings

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Date:   Fri, 27 Apr 2018 09:13:23 -0500
From:   Rob Herring <robh@...nel.org>
To:     srinivas.kandagatla@...aro.org
Cc:     andy.gross@...aro.org, broonie@...nel.org,
        linux-arm-msm@...r.kernel.org, alsa-devel@...a-project.org,
        bgoswami@...eaurora.org, gregkh@...uxfoundation.org,
        david.brown@...aro.org, mark.rutland@....com, lgirdwood@...il.com,
        plai@...eaurora.org, tiwai@...e.com, perex@...ex.cz,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, rohkumar@....qualcomm.com,
        spatakok@....qualcomm.com
Subject: Re: [PATCH v6 04/24] ASoC: qdsp6: dt-bindings: Add q6afe dt bindings

On Thu, Apr 26, 2018 at 10:45:46AM +0100, srinivas.kandagatla@...aro.org wrote:
> From: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> 
> This patch add DT bindings for AFE (Audio Frontend) DSP module.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Reviewed-and-tested-by: Rohit kumar <rohitkr@...eaurora.org>
> ---
>  .../devicetree/bindings/sound/qcom,q6afe.txt       | 88 ++++++++++++++++++++++
>  include/dt-bindings/sound/qcom,q6afe.h             | 31 ++++++++
>  2 files changed, 119 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/sound/qcom,q6afe.txt
>  create mode 100644 include/dt-bindings/sound/qcom,q6afe.h
> 
> diff --git a/Documentation/devicetree/bindings/sound/qcom,q6afe.txt b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
> new file mode 100644
> index 000000000000..05208a63dd3c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/sound/qcom,q6afe.txt
> @@ -0,0 +1,88 @@
> +Qualcomm Audio Front End (Q6AFE) binding
> +
> +AFE is one of the APR audio service on Q6DSP
> +Please refer to qcom,apr.txt for details of the common apr service bindings
> +used by all apr services.
> +
> +- but must contain the following property:
> +
> +- compatible:
> +	Usage: required
> +	Value type: <stringlist>
> +	Definition: must be "qcom,q6afe-v<MAJOR-NUMBER>.<MINOR-NUMBER>"
> +		  Or "qcom,q6afe" where the version number can be queried
> +		  from DSP.
> +		  example "qcom,q6afe"

reg too.

> +
> += AFE DAIs (Digial Audio Interface)
> +"dais" subnode of the AFE node represents dai specific configuration
> +
> +- #sound-dai-cells
> +	Usage: required
> +	Value type: <u32>
> +	Definition: Must be 1
> +
> +- reg

It's not clear here these are in a grandchild node.

> +	Usage: required
> +	Value type: <u32>
> +	Definition: Must be dai id
> +
> +- qcom,sd-lines
> +	Usage: required for mi2s interface
> +	Value type: <prop-encoded-array>
> +	Definition: Must be list of serial data lines used by this dai.
> +	should be one or more of the 1-4 sd lines.