linux-kernel - [PATCH v2 09/10] arm64: dts: qcom: x1e80100-microsoft-romulus: Add missing pinctrl for eDP HPD

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Message-Id: <20250822-x1e80100-add-edp-hpd-v2-9-6310176239a6@linaro.org>
Date: Fri, 22 Aug 2025 11:29:00 +0200
From: Stephan Gerhold <stephan.gerhold@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Aleksandrs Vinarskis <alex.vinarskis@...il.com>, 
 Abel Vesa <abel.vesa@...aro.org>, Xilin Wu <wuxilin123@...il.com>, 
 Jens Glathe <jens.glathe@...schoolsolutions.biz>, 
 Srinivas Kandagatla <srini@...nel.org>, 
 Sibi Sankar <quic_sibis@...cinc.com>, 
 Rajendra Nayak <quic_rjendra@...cinc.com>, linux-arm-msm@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Johan Hovold <johan@...nel.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Subject: [PATCH v2 09/10] arm64: dts: qcom: x1e80100-microsoft-romulus: Add
 missing pinctrl for eDP HPD

At the moment, we indirectly rely on the boot firmware to set up the
pinctrl for the eDP HPD line coming from the internal display. If the boot
firmware does not configure the display (e.g. because a different display
is selected for output in the UEFI settings), then the display fails to
come up and there are several errors in the kernel log:

 [drm:dpu_encoder_phys_vid_wait_for_commit_done:544] [dpu error]vblank timeout: 80020041
 [drm:dpu_kms_wait_for_commit_done:524] [dpu error]wait for commit done returned -110
 [drm:dpu_encoder_frame_done_timeout:2715] [dpu error]enc40 frame done timeout
 ...

Fix this by adding the missing pinctrl for gpio119 (func1/edp0_hot and
bias-disable according to the ACPI DSDT), which is defined as
&edp0_hpd_default template in x1e80100.dtsi.

Fixes: 09d77be56093 ("arm64: dts: qcom: Add support for X1-based Surface Laptop 7 devices")
Signed-off-by: Stephan Gerhold <stephan.gerhold@...aro.org>
---
 arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
index 27dd5e4e9939124360544ee9c59900ebb01f3f49..f4ae0f4623a5fbc85932a879473399870a49c35e 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
@@ -965,6 +965,9 @@ &mdss_dp1_out {
 &mdss_dp3 {
 	/delete-property/ #sound-dai-cells;

+	pinctrl-0 = <&edp0_hpd_default>;
+	pinctrl-names = "default";
+
 	status = "okay";

 	aux-bus {

-- 
2.50.1