linux-kernel - Re: [PATCH 3/9] arm64: dts: qcom: sc7280: Enable MDP turbo mode

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Date: Thu, 22 Feb 2024 11:04:31 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: Bjorn Andersson <quic_bjorande@...cinc.com>, Douglas Anderson <dianders@...omium.org>, 
	Rob Clark <robdclark@...il.com>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
	Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>, 
	David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>, cros-qcom-dts-watchers@...omium.org, 
	Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
	devicetree@...r.kernel.org
Subject: Re: [PATCH 3/9] arm64: dts: qcom: sc7280: Enable MDP turbo mode

On Thu, 22 Feb 2024 at 10:56, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
>
>
> On 2/22/24 00:41, Dmitry Baryshkov wrote:
> > On Thu, 22 Feb 2024 at 01:19, Bjorn Andersson <quic_bjorande@...cinc.com> wrote:
> >>
> >> The max frequency listed in the DPU opp-table is 506MHz, this is not
> >> sufficient to drive a 4k@60 display, resulting in constant underrun.
> >>
> >> Add the missing MDP_CLK turbo frequency of 608MHz to the opp-table to
> >> fix this.
> >
> > I think we might want to keep this disabled for ChromeOS devices. Doug?
>
> ChromeOS devices don't get a special SoC

But they have the sc7280-chrome-common.dtsi, which might contain a
corresponding /delete-node/ .


-- 
With best wishes
Dmitry