From: Neil Armstrong <neil.armstrong@linaro.org>
Date: Fri, 22 Aug 2025 15:56:55 +0000 (+0200)
Subject: arm64: dts: qcom: sm8550: Set up 4-lane DP
X-Git-Tag: v6.18-rc1~147^2~32^2~51
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b942e087564b0c1b0bf1c31c1058a59dfd5df841;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: qcom: sm8550: 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@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250822-topic-x1e80100-4lanes-v3-7-5363acad9e32@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index 032640aa9eb54..2df6ba05e0cdd 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -3795,7 +3795,7 @@
 					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>;
 						};
 					};