linux-kernel - [PATCH v3 8/9] arm64: dts: qcom: sm8650: Set up 4-lane DP

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Message-Id: <20250822-topic-x1e80100-4lanes-v3-8-5363acad9e32@linaro.org>
Date: Fri, 22 Aug 2025 17:56:56 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: 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, Neil Armstrong <neil.armstrong@...aro.org>
Subject: [PATCH v3 8/9] arm64: dts: qcom: sm8650: Set up 4-lane DP

Allow up to 4 lanes for the DisplayPort link from the PHY to the
controller now the mode-switch events can reach the QMP Combo PHY.

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 289ab35210c1b429d2337cbe4a5a479eb36d8b7d..29a65bfc0bcfa0e2dec9e5d16ef8ddcb8c879526 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -5721,7 +5721,7 @@ port@1 {
 						reg = <1>;
 
 						mdss_dp0_out: endpoint {
-							data-lanes = <0 1>;
+							data-lanes = <0 1 2 3>;
 							remote-endpoint = <&usb_dp_qmpphy_dp_in>;
 						};
 					};

-- 
2.34.1