linux-kernel - Re: [PATCH 1/2] ASoC: dt-bindings: fsl_rpmsg: List DAPM endpoints ignoring suspend

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Message-ID: <c3e682dd-7bb7-4662-b97d-872df1ff879d@linaro.org>
Date:   Mon, 25 Sep 2023 08:51:19 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Chancel Liu <chancel.liu@....com>, lgirdwood@...il.com,
        broonie@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        shengjiu.wang@...il.com, Xiubo.Lee@...il.com, festevam@...il.com,
        nicoleotsuka@...il.com, perex@...ex.cz, tiwai@...e.com,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] ASoC: dt-bindings: fsl_rpmsg: List DAPM endpoints
 ignoring suspend

On 25/09/2023 04:48, Chancel Liu wrote:
> Add a property to list DAPM endpoints which mark paths between these
> endpoints ignoring suspend. These DAPM paths can still be power on when
> system enters into suspend.
> 
> Signed-off-by: Chancel Liu <chancel.liu@....com>
> ---
>  Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> index 188f38baddec..ec6e09eab427 100644
> --- a/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> +++ b/Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
> @@ -91,6 +91,12 @@ properties:
>        - rpmsg-audio-channel
>        - rpmsg-micfil-channel
>  
> +  fsl,lpa-widgets:

What is LPA? It's not explained in property description.

> +    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
> +    description: |
> +      A list of DAPM endpoints which mark paths between these endpoints
> +      ignoring suspend.

And how does it differ from audio-routing? Also, you need to explain
what is "suspend" in this context. Bindings are independent of Linux.

Best regards,
Krzysztof