linux-kernel - Re: [PATCH v2 2/6] arm64: dts: qcom: qcs6490-rb3gen2: Add DP output

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Message-ID: <CAA8EJppCuoOnaB03GsjXGYSs5Q9iQ2uXHWQqfkPA5jKzdHc8NQ@mail.gmail.com>
Date: Thu, 28 Mar 2024 09:17:45 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>
Cc: Bjorn Andersson <quic_bjorande@...cinc.com>, cros-qcom-dts-watchers@...omium.org, 
	Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/6] arm64: dts: qcom: qcs6490-rb3gen2: Add DP output

On Thu, 28 Mar 2024 at 05:07, Bjorn Andersson <andersson@...nel.org> wrote:
>
> On Thu, Mar 28, 2024 at 03:51:54AM +0200, Dmitry Baryshkov wrote:
> > On Wed, 27 Mar 2024 at 04:04, Bjorn Andersson <quic_bjorande@...cinc.com> wrote:
> > >
> > > The RB3Gen2 board comes with a mini DP connector, describe this, enable
> > > MDSS, DP controller and the PHY that drives this.
> > >
> > > Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> > > ---
> > >  arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 40 ++++++++++++++++++++++++++++
> > >  1 file changed, 40 insertions(+)
> > >
> > > diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > index 63ebe0774f1d..f90bf3518e98 100644
> > > --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
> > > @@ -39,6 +39,20 @@ chosen {
> > >                 stdout-path = "serial0:115200n8";
> > >         };
> > >
> > > +       dp-connector {
> > > +               compatible = "dp-connector";
> > > +               label = "DP";
> > > +               type = "mini";
> > > +
> > > +               hpd-gpios = <&tlmm 60 GPIO_ACTIVE_HIGH>;
> >
> > Is it the standard hpd gpio? If so, is there any reason for using it
> > through dp-connector rather than as a native HPD signal?
> >
>
> I added it because you asked for it. That said, I do like having it
> clearly defined in the devicetree.

I asked for the dp-connector device, not for the HPD function change.


-- 
With best wishes
Dmitry