linux-kernel - Re: [PATCH 3/4] arm64: dts: qcom: lemans-ride: Enable dispcc1

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Message-ID: <mxim7iweydzzhetqlao54hrd4ntufdhwdsbaunblyhlovdv25z@gct5iydvzbzu>
Date: Sun, 19 Oct 2025 14:52:51 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Bjorn Andersson <andersson@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Mani Chandana Ballary Kuntumalla <quic_mkuntuma@...cinc.com>,
        marijn.suijten@...ainline.org, swboyd@...omium.org, mripard@...nel.org,
        abel.vesa@...aro.org, konradybcio@...nel.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, robin.clark@....qualcomm.com,
        jessica.zhang@....qualcomm.com, abhinav.kumar@...ux.dev,
        sean@...rly.run, airlied@...il.com, simona@...ll.ch,
        alex.vinarskis@...il.com, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, freedreno@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, quic_rajeevny@...cinc.com,
        quic_vproddut@...cinc.com, quic_riteshk@...cnic.com,
        quic_amitsi@...cnic.com
Subject: Re: [PATCH 3/4] arm64: dts: qcom: lemans-ride: Enable dispcc1

On Fri, Oct 17, 2025 at 03:54:09PM -0700, Bjorn Andersson wrote:
> On Wed, Oct 01, 2025 at 11:43:44AM +0200, Konrad Dybcio wrote:
> > On 9/26/25 3:53 PM, Dmitry Baryshkov wrote:
> > > On Fri, Sep 26, 2025 at 02:29:55PM +0530, Mani Chandana Ballary Kuntumalla wrote:
> > >> This change enables display1 clock controller.
> > >>
> > >> Signed-off-by: Mani Chandana Ballary Kuntumalla <quic_mkuntuma@...cinc.com>
> > >> ---
> > >>  arch/arm64/boot/dts/qcom/lemans-ride-common.dtsi | 4 ++++
> > >>  1 file changed, 4 insertions(+)
> > >>
> > >> diff --git a/arch/arm64/boot/dts/qcom/lemans-ride-common.dtsi b/arch/arm64/boot/dts/qcom/lemans-ride-common.dtsi
> > >> index c69aa2f41ce2..d4436bc473ba 100644
> > >> --- a/arch/arm64/boot/dts/qcom/lemans-ride-common.dtsi
> > >> +++ b/arch/arm64/boot/dts/qcom/lemans-ride-common.dtsi
> > >> @@ -436,6 +436,10 @@ vreg_l8e: ldo8 {
> > >>  	};
> > >>  };
> > >>  
> > >> +&dispcc1 {
> > >> +	status = "okay";
> > > 
> > > I think this one should be enabled by default. Unless Konrad or Bjorn
> > > disagrees, please fix lemans.dtsi.
> > 
> > Of course there is no reason for clock controllers to be disabled
> > 
> 
> On SC8280XP we have the same setup (two MDSS), there the clock
> controller was left disabled because not all SKUs had that IP-block
> accessible.

Do you mean some auto platforms or something else?

> 
> Whether this is the case of not for Lemans I don't know, if it is then
> the commit message should have stated that.
> 
> Regards,
> Bjorn
> 
> > Konrad

-- 
With best wishes
Dmitry