linux-kernel - Re: [PATCH 3/3] arm64: dts: qcom: Add X1E78100 ThinkPad T14s Gen 6

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Message-ID: <CAF6AEGszzRFiW16VzQQVF21U79uLcTNwwuGsHs98Zp_UGGTEBA@mail.gmail.com>
Date: Mon, 22 Jul 2024 08:00:19 -0700
From: Rob Clark <robdclark@...il.com>
To: Abel Vesa <abel.vesa@...aro.org>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>, Bjorn Andersson <andersson@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Marijn Suijten <marijn.suijten@...ainline.org>, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Johan Hovold <johan@...nel.org>
Subject: Re: [PATCH 3/3] arm64: dts: qcom: Add X1E78100 ThinkPad T14s Gen 6

On Mon, Jul 22, 2024 at 3:11 AM Abel Vesa <abel.vesa@...aro.org> wrote:
>
> On 24-07-22 10:42:57, Konrad Dybcio wrote:
> > On 21.07.2024 6:40 PM, Abel Vesa wrote:
> > > On 24-07-19 22:16:38, Konrad Dybcio wrote:
> > >> Add support for the aforementioned laptop. That includes:
> > >>
> > >> - input methods, incl. lid switch (keyboard needs the pdc
> > >>   wakeup-parent removal hack..)
> > >> - NVMe, WiFi
> > >> - USB-C ports
> > >> - GPU, display
> > >> - DSPs
> > >>
> > >> Notably, the USB-A ports on the side are depenedent on the USB
> > >> multiport controller making it upstream.
> > >>
> > >> At least one of the eDP panels used (non-touchscreen) identifies as
> > >> BOE 0x0b66.
> > >>
> > >> See below for the hardware description from the OEM.
> > >>
> > >> Link: https://www.lenovo.com/us/en/p/laptops/thinkpad/thinkpadt/lenovo-thinkpad-t14s-gen-6-(14-inch-snapdragon)/len101t0099
> > >> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> > >
> > > Few comments below. Otherwise, LGTM.
> > >
> > > Reviewed-by: Abel Vesa <abel.vesa@...aro.org>
> > >
> > >> ---
> > >>  arch/arm64/boot/dts/qcom/Makefile                  |   1 +
> > >>  .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts     | 792 +++++++++++++++++++++
> > >>  2 files changed, 793 insertions(+)
> > >>
> > >> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> > >> index 0e5c810304fb..734a05e04c4a 100644
> > >> --- a/arch/arm64/boot/dts/qcom/Makefile
> > >> +++ b/arch/arm64/boot/dts/qcom/Makefile
> > >> @@ -261,6 +261,7 @@ dtb-$(CONFIG_ARCH_QCOM)        += sm8650-hdk-display-card.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += sm8650-hdk.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += sm8650-mtp.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += sm8650-qrd.dtb
> > >> +dtb-$(CONFIG_ARCH_QCOM)   += x1e78100-lenovo-thinkpad-t14s.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += x1e80100-asus-vivobook-s15.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += x1e80100-crd.dtb
> > >>  dtb-$(CONFIG_ARCH_QCOM)   += x1e80100-lenovo-yoga-slim7x.dtb
> > >> diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
> > >
> > > So what happens for SKUs of this model wil have x1e80100 ?
> > >
> > > Maybe we should stick to x1e80100 ?
> >
> > This one only ships with 78100
> >
>
> Sure, but then in upstream we only have 80100. Plus, it is included in
> this file as well.
>
> I don't know what's the right thing to do here. But I think it keeps
> things more simple if we keep everything under the x1e80100 umbrella.

plus sticking to x1e80100 will avoid angering tab completion :-P

BR,
-R

> > [...]
> >
> > >> +  vreg_edp_3p3: regulator-edp-3p3 {
> > >> +          compatible = "regulator-fixed";
> > >> +
> > >> +          regulator-name = "VREG_EDP_3P3";
> > >> +          regulator-min-microvolt = <3300000>;
> > >> +          regulator-max-microvolt = <3300000>;
> > >> +
> > >> +          gpio = <&tlmm 70 GPIO_ACTIVE_HIGH>;
> > >> +          enable-active-high;
> > >> +
> > >> +          pinctrl-0 = <&edp_reg_en>;
> > >> +          pinctrl-names = "default";
> > >> +
> > >> +          regulator-always-on;
> > >
> > > Drop this.
> >
> > Oops!
> >
> > [...]
> >
> > >> +
> > >> +  edp_reg_en: edp-reg-en-state {
> > >> +          pins = "gpio70";
> > >> +          function = "gpio";
> > >> +          drive-strength = <16>;
> > >> +          bias-pull-up;
> > >
> > > bias-disable, maybe ?
> >
> > Yeah, probably
> >
> > Konrad
> >
>