linux-kernel - Re: [PATCH v10 3/3] arm64: dts: qcom: Add Lenovo ThinkBook 16 G7 QOY device tree

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Message-ID: <a6b063a2-2b99-4de4-a3b3-876f6b778bc6@kernel.org>
Date: Tue, 12 Aug 2025 14:20:45 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
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 v10 3/3] arm64: dts: qcom: Add Lenovo ThinkBook 16 G7 QOY
 device tree

On 10/08/2025 19:37, 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).
> 
> Signed-off-by: Jens Glathe <jens.glathe@...schoolsolutions.biz>
> Co-developed by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>


Incorrect SoB chain. Please look at submitting patches which describe
exactly that case.


Best regards,
Krzysztof