linux-kernel - Re: [RFT PATCH] arm64: dts: qcom: sdm850-c630: add missing panel supply

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Message-ID: <CAKXuJqhQJftK9rjG_CRmuc93Sdi1-p0LCNZQ56Uwfxsa-V8WUA@mail.gmail.com>
Date:   Mon, 19 Jun 2023 09:11:48 -0500
From:   Steev Klimaszewski <steev@...i.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
Cc:     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: [RFT PATCH] arm64: dts: qcom: sdm850-c630: add missing panel supply

On Mon, Jun 19, 2023 at 8:16 AM Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>
> On 17.06.2023 19:15, Krzysztof Kozlowski wrote:
> > Panel bindings (boe,nv133fhm-n61) require supply which here actually can
> > be turned on/off via GPIO control:
> >
> >   sdm850-lenovo-yoga-c630.dtb: panel: 'power-supply' is a required property
> >
> > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >
> > ---
> >
> > Not tested on hardware
> > ---
> +Steev
>
> Konrad
> >  .../boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 20 +++++++++++++++++++
> >  1 file changed, 20 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > index cfbc4fc1eba9..3d871567cf81 100644
> > --- a/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > +++ b/arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts
> > @@ -87,6 +87,25 @@ sn65dsi86_refclk: sn65dsi86-refclk {
> >               clock-frequency = <19200000>;
> >       };
> >
> > +     vph_pwr: regulator-vph-pwr {
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "vph_pwr";
> > +             regulator-min-microvolt = <3700000>;
> > +             regulator-max-microvolt = <3700000>;
> > +     };
> > +
> > +     vlcm_3v3: regulator-vlcm-3v3 {
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "vlcm_3v3";
> > +
> > +             vin-supply = <&vph_pwr>;
> > +             regulator-min-microvolt = <3300000>;
> > +             regulator-max-microvolt = <3300000>;
> > +
> > +             gpio = <&tlmm 88 GPIO_ACTIVE_HIGH>;
> > +             enable-active-high;
> > +     };
> > +
> >       backlight: backlight {
> >               compatible = "pwm-backlight";
> >               pwms = <&sn65dsi86 1000000>;
> > @@ -419,6 +438,7 @@ aux-bus {
> >                       panel: panel {
> >                               compatible = "boe,nv133fhm-n61";
> >                               backlight = <&backlight>;
> > +                             power-supply = <&vlcm_3v3>;
> >
> >                               port {
> >                                       panel_in_edp: endpoint {

I've tested this on my c630, which does have the nv133fhm-n61,
however... the c630 has 2 different LCD panels available, and I do not
have a c630 which has the other panel (anymore).  I reached out on IRC
to the person who has it, but have not yet heard back.

-- steev