linux-kernel - Re: [PATCH 1/4] arm64: dts: qcom: sm8450: move Soundwire pinctrl to its nodes

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Date:   Wed, 13 Dec 2023 19:53:15 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] arm64: dts: qcom: sm8450: move Soundwire pinctrl to
 its nodes



On 12/13/23 17:25, Krzysztof Kozlowski wrote:
> Pin configuration for Soundwire bus should be set in Soundwire
> controller nodes, not in the associated macro codec node.  This
> placement change should not have big impact in general,
It did ensure correct timing for rb2 so YMMV :D

> because macro
> codec is a clock provider for Soundwire controller, thus its devices is
> probed first.  However it will have impact for disabled Soundwire buses,
> e.g. WSA2, because after this change the pins will be left in default
> state.
> 
> We also follow similar approach in newer SoCs, like Qualcomm SM8650.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> 
> ---
Acked-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad