linux-kernel - Re: [PATCH] arm64: dts: qcom: sc8180x: Move DisplayPort for MMCX

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Date:   Tue, 13 Jun 2023 01:34:24 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Vinod Koul <vkoul@...nel.org>
Cc:     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] arm64: dts: qcom: sc8180x: Move DisplayPort for MMCX

On 13/06/2023 01:07, Bjorn Andersson wrote:
> The DisplayPort blocks are powered by MMCX and should be described as
> such to ensure that power votes are done on the right resource.
> 
> This also solves the problem that sync_state is unaware of the DP
> controllers needing MMCX to be kept alive during boot. As such this
> change also fixes occasionally seen crashes during boot due to
> undervoltage of MMCX.
> 
> Fixes: 494dec9b6f54 ("arm64: dts: qcom: sc8180x: Add display and gpu nodes")
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/sc8180x.dtsi | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry