linux-kernel - Re: [PATCH v2 4/4] arm64: dts: qcom: Add Lenovo ThinkBook 16 device tree

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Message-ID: <b9cc6e1f-9a20-4091-9071-4d6673a44fac@oss.qualcomm.com>
Date: Fri, 16 May 2025 12:03:39 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: jens.glathe@...schoolsolutions.biz,
        Bjorn Andersson
 <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Johan Hovold <johan+linaro@...nel.org>,
        Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Subject: Re: [PATCH v2 4/4] arm64: dts: qcom: Add Lenovo ThinkBook 16 device
 tree

On 5/16/25 8:43 AM, Jens Glathe via B4 Relay wrote:
> From: Jens Glathe <jens.glathe@...schoolsolutions.biz>
> 
> Device tree for the Lenovo Thinkbook 16 G7 QOY

[...]

> - SDHC card reader is based on the on-chip sdhc_2 controller, but the driver from
> the Snapdragon Dev Kit is only a partial match. It can do normal slow sd cards,
> but not the faster ones.

Please list which kinds work and which don't, maybe we can work it out

> (X1-45, apparently A730).

No.

> The SoC has 2 instead of 3 thermal sensor banks. I have disabled all sensors on
> the 3rd bank to get rid of dmesg errors. Many of these sensor nodes have a place
> on the remaining 2 banks, but I don't know which. So the thermal management is
> clearly incomplete, but the firmware monitoring the chip does a power off before
> overheating (not experienced yet). For the Thinkbook, it has a pretty decent fan
> that can develop some air flow, so maybe this has prevented the emergency cutoff.
> As a result of these unknowns, I had to modify x1e80100.dtsi and x1p42100.dtsi to
> delete the non-existend nodes.

Please remove these changes, the sensors are reassigned on the SoC, I'll send a
patch to fix that.

[...]

> +	pmic-glink {
> +		compatible = "qcom,x1e80100-pmic-glink",
> +			     "qcom,sm8550-pmic-glink",
> +			     "qcom,pmic-glink";
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		orientation-gpios = <&tlmm 121 GPIO_ACTIVE_HIGH>,
> +							<&tlmm 123 GPIO_ACTIVE_HIGH>;

broken indentation, please make sure you tab width is 8

[...]

> +	sound {
> +		compatible = "qcom,x1e80100-sndcard";
> +		model = "X1E80100-LENOVO-ThinkBook-16";

I believe this one only comes in the P flavor

> +		audio-routing = "SpkrLeft IN", "WSA WSA_SPK1 OUT",
> +				"SpkrRight IN", "WSA WSA_SPK2 OUT",
> +				"IN1_HPHL", "HPHL_OUT",
> +				"IN2_HPHR", "HPHR_OUT",
> +				"AMIC2", "MIC BIAS2",
> +				"VA DMIC0", "MIC BIAS3",
> +				"VA DMIC1", "MIC BIAS3",
> +				"VA DMIC2", "MIC BIAS1",
> +				"VA DMIC3", "MIC BIAS1",
> +				"VA DMIC0", "VA MIC BIAS3",
> +				"VA DMIC1", "VA MIC BIAS3",
> +				"VA DMIC2", "VA MIC BIAS1",
> +				"VA DMIC3", "VA MIC BIAS1",
> +				"TX SWR_INPUT1", "ADC2_OUTPUT";
> +
> +		wcd-playback-dai-link {
> +			link-name = "WCD Playback";
> +
> +			cpu {
> +				sound-dai = <&q6apmbedai RX_CODEC_DMA_RX_0>;
> +			};
> +
> +			codec {
> +				sound-dai = <&wcd938x 0>, <&swr1 0>, <&lpass_rxmacro 0>;
> +			};
'co'dec < 'cp'u

[...]

> +	vreg_cam_5p0: regulator-cam-5p0 {
> +		compatible = "regulator-fixed";
> +
> +		regulator-name = "VREG_CAM_5P0";
> +		regulator-min-microvolt = <5000000>;
> +		regulator-max-microvolt = <5000000>;
> +
> +		gpio = <&tlmm 44 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +
> +		pinctrl-0 = <&cam_reg_en>;
> +		pinctrl-names = "default";
> +
> +		regulator-boot-on;
> +		regulator-always-on;

always-on for camera.. spooky..

[...]

> +&gpu {
> +	status = "okay";
> +
> +	zap-shader {
> +		firmware-name = "qcom/x1e80100/LENOVO/21NH/qcdxkmsuc8380.mbn";

This file won't work

[...]

> +	};
> +};
> +
> +&i2c2 {
> +	clock-frequency = <400000>;
> +
> +	pinctrl-0 = <&qup_i2c2_data_clk>, <&tpad_default>, <&kybd_default>;

Please assign the pins to their specific users

[...]

> +&sdhc_2 {
> +	cd-gpios = <&tlmm 71 GPIO_ACTIVE_LOW>;
> +	pinctrl-0 = <&sdc2_default &sdc2_card_det_n>;
> +	pinctrl-1 = <&sdc2_sleep &sdc2_card_det_n>;
> +	pinctrl-names = "default", "sleep";
> +	vmmc-supply = <&vreg_l9b_2p9>;
> +	vqmmc-supply = <&vreg_l6b_1p8>;
> +//	bus-width = <4>;
> +//	no-sdio;
> +//	no-mmc;

bus width is set in the SoC dt, please either uncomment or drop the
other ones

Konrad