linux-kernel - Re: [PATCH v11 3/3] arm64: dts: qcom: Add Lenovo ThinkBook 16 G7 QOY device tree

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Message-ID: <8f757a56-6f8f-412d-a476-ac179358fd94@oss.qualcomm.com>
Date: Tue, 12 Aug 2025 15:17:04 +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>,
        Matthias Kaehlcke <mka@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Aleksandrs Vinarskis <alex.vinarskis@...il.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH v11 3/3] arm64: dts: qcom: Add Lenovo ThinkBook 16 G7 QOY
 device tree

On 8/12/25 3:02 PM, Jens Glathe via B4 Relay wrote:
> From: Jens Glathe <jens.glathe@...schoolsolutions.biz>
> 
> Device tree for the Lenovo Thinkbook 16 G7 QOY
> 
> The Laptop is a Snapdragon X1 / X1 Plus (Purwa) based device [1].
> 
> Supported features:
> 
> - USB type-c and type-a ports
> - Keyboard
> - Touchpad (all that are described in the dsdt)
> - Touchscreen (described in the dsdt, no known SKUss)
> - Display including PWM backlight control
> - PCIe devices
> - nvme
> - SDHC card reader
> - ath12k WCN7850 Wifi and Bluetooth
> - ADSP and CDSP
> - GPIO keys (Lid switch)
> - Sound via internal speakers / DMIC / USB / headphone jack
> - DP Altmode with 2 lanes (as all of these still do)
> - Integrated fingerprint reader (FPC)
> - Integrated UVC camera
> - X1-45 GPU
> 
> Not supported yet:
> 
> - HDMI port.
> - EC and some fn hotkeys.
> 
> Limited support yet:
> 
> - 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 UHS-I (SD104) and UHS-II.
> 
> This work was done without any schematics or non-public knowledge of the device.
> So, it is based on the existing x1e device trees, dsdt analysis, using HWInfo
> ARM64, and pure guesswork. It has been confirmed, however, that the device really
> has 4 NXP PTN3222 eUSB2 repeaters, one of which doesn't have a reset GPIO (eusb5
> @43).
> 
> Co-developed-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
> Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
> Signed-off-by: Jens Glathe <jens.glathe@...schoolsolutions.biz>
> ---

[...]

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

See b49e37de8e70 ("arm64: dts: qcom: x1e80100-crd: Drop duplicate DMIC supplies")

[...]

> +	wcn7850-pmu {
> +		compatible = "qcom,wcn7850-pmu";
> +
> +		vdd-supply = <&vreg_wcn_0p95>;
> +		vddio-supply = <&vreg_l15b_1p8>;
> +		vddaon-supply = <&vreg_wcn_0p95>;
> +		vdddig-supply = <&vreg_wcn_0p95>;
> +		vddrfa1p2-supply = <&vreg_wcn_1p9>;
> +		vddrfa1p8-supply = <&vreg_wcn_1p9>;
> +
> +		wlan-enable-gpios = <&tlmm 117 GPIO_ACTIVE_HIGH>;
> +		bt-enable-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
> +
> +		pinctrl-0 = <&wcn_wlan_en>;
> +		pinctrl-1 = <&wcn_bt_en>;
> +		pinctrl-names = "default";

this doesn't seem right

Konrad