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

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Message-ID: <Zp055OR+OzSgiHhX@linaro.org>
Date: Sun, 21 Jul 2024 19:40:04 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: 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 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 ?

> new file mode 100644
> index 000000000000..b12953267505
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
> @@ -0,0 +1,792 @@
> +// SPDX-License-Identifier: BSD-3-Clause
> +/*
> + * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
> + * Copyright (c) 2024, Linaro Limited
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/gpio-keys.h>
> +#include <dt-bindings/input/input.h>
> +#include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> +
> +#include "x1e80100.dtsi"
> +#include "x1e80100-pmics.dtsi"
> +
> +/ {
> +	model = "Lenovo ThinkPad T14s Gen 6";
> +	compatible = "lenovo,thinkpad-t14s", "qcom,x1e78100", "qcom,x1e80100";
> +
> +	aliases {
> +		serial0 = &uart21;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +

[...]

> +
> +	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.

> +		regulator-boot-on;
> +	};
> +

[...]

> +
> +&tlmm {
> +	gpio-reserved-ranges = <34 2>, /* Unused */
> +			       <44 4>, /* SPI (TPM) */
> +			       <72 2>, /* Secure EC I2C connection (?) */
> +			       <238 1>; /* UFS Reset */
> +
> +	tpad_default: tpad-default-state {
> +		pins = "gpio3";
> +		function = "gpio";
> +		bias-pull-up;
> +	};
> +
> +	nvme_reg_en: nvme-reg-en-state {
> +		pins = "gpio18";
> +		function = "gpio";
> +		drive-strength = <2>;
> +		bias-disable;
> +	};
> +
> +	ts0_default: ts0-default-state {
> +		reset-n-pins {
> +			pins = "gpio48";
> +			function = "gpio";
> +			output-high;
> +			drive-strength = <16>;
> +		};
> +
> +		int-n-pins {
> +			pins = "gpio51";
> +			function = "gpio";
> +			bias-disable;
> +		};
> +	};
> +
> +	kybd_default: kybd-default-state {
> +		pins = "gpio67";
> +		function = "gpio";
> +		bias-disable;
> +	};
> +
> +	edp_reg_en: edp-reg-en-state {
> +		pins = "gpio70";
> +		function = "gpio";
> +		drive-strength = <16>;
> +		bias-pull-up;

bias-disable, maybe ?

> +	};
> +
> +	hall_int_n_default: hall-int-n-state {
> +		pins = "gpio92";
> +		function = "gpio";
> +		bias-disable;
> +	};
> +

[...]

> 
> -- 
> 2.45.2
>