linux-kernel - Re: [PATCH 5/5] arm64: dts: qcom: gaokun3: Add Embedded Controller node

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Message-ID: <20241230162257.215401-1-mitltlatltl@gmail.com>
Date: Tue, 31 Dec 2024 00:22:56 +0800
From: Pengyu Luo <mitltlatltl@...il.com>
To: konrad.dybcio@....qualcomm.com
Cc: andersson@...nel.org,
	bryan.odonoghue@...aro.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	dmitry.baryshkov@...aro.org,
	gregkh@...uxfoundation.org,
	hdegoede@...hat.com,
	heikki.krogerus@...ux.intel.com,
	ilpo.jarvinen@...ux.intel.com,
	konradybcio@...nel.org,
	krzk+dt@...nel.org,
	linux-arm-msm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	linux-usb@...r.kernel.org,
	mitltlatltl@...il.com,
	nikita@...n.ru,
	platform-driver-x86@...r.kernel.org,
	robh@...nel.org,
	sre@...nel.org
Subject: Re: [PATCH 5/5] arm64: dts: qcom: gaokun3: Add Embedded Controller node

On Mon, Dec 30, 2024 at 10:53 PM Konrad Dybcio <konrad.dybcio@....qualcomm.com> wrote:
> On 27.12.2024 6:13 PM, Pengyu Luo wrote:
> > The Embedded Controller in the Huawei Matebook E Go (s8280xp)
> > is accessible on &i2c15 and provides battery and adapter status,
> > port orientation status, as well as HPD event notifications for
> > two USB Type-C port, etc.
> >
> > Add the EC to the device tree and describe the relationship among
> > the type-c ports, orientation switches and the QMP combo PHY.
> >
> > Signed-off-by: Pengyu Luo <mitltlatltl@...il.com>
> > ---
> >  .../boot/dts/qcom/sc8280xp-huawei-gaokun3.dts | 139 ++++++++++++++++++
> >  1 file changed, 139 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts b/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts
> > index 09b95f89e..09ca9a560 100644
> > --- a/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts
> > +++ b/arch/arm64/boot/dts/qcom/sc8280xp-huawei-gaokun3.dts
> > @@ -28,6 +28,7 @@ / {
> >
> >       aliases {
> >               i2c4 = &i2c4;
> > +             i2c15 = &i2c15;
> >               serial1 = &uart2;
> >       };
> >
> > @@ -216,6 +217,40 @@ map1 {
> >               };
> >       };
> >
> > +     usb0-sbu-mux {
> > +                     compatible = "pericom,pi3usb102", "gpio-sbu-mux";
> > +
> > +                     select-gpios = <&tlmm 164 GPIO_ACTIVE_HIGH>;
> > +
> > +                     pinctrl-names = "default";
> > +                     pinctrl-0 = <&usb0_sbu_default>;
>
> Please preserve this order:
>
> property-n
> property-names
>
> > +
> > +                     orientation-switch;
>
> This
>
> > +
> > +                     port {
> > +                             usb0_sbu_mux: endpoint {
> > +                                             remote-endpoint = <&ucsi0_sbu>;
>
> And this section have incorrect whitespacing (one tab too many, make
> sure you set your tab width to 8 spaces)
>
> Same for usb1-sbu-mux
>
> [...]
>
> > +     i2c15_default: i2c15-default-state {
> > +             pins = "gpio36", "gpio37";
> > +             function = "qup15";
> > +             drive-strength = <2>;
> > +             bias-pull-up;
> > +     };
> > +
> >       mode_pin_active: mode-pin-state {
> >               pins = "gpio26";
> >               function = "gpio";
> > @@ -1301,6 +1426,20 @@ tx-pins {
> >               };
> >       };
> >
> > +     usb0_sbu_default: usb0-sbu-state {
> > +             pins = "gpio164";
> > +             function = "gpio";
> > +             bias-disable;
> > +             drive-strength = <16>;
> > +     };
> > +
> > +     usb1_sbu_default: usb1-sbu-state {
> > +             pins = "gpio47";
> > +             function = "gpio";
> > +             bias-disable;
> > +             drive-strength = <16>;
> > +     };
>
> Similarly, please keep drive-strength above bias for consistency
>
> lgtm otherwise
>

Totaly agree, I was in a hurry, I will fix it in v2.

Best wishes,
Pengyu