linux-kernel - [PATCH 09/14] arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: Set up 4-lane DP

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Message-Id: <20250821-topic-x1e80100-4lanes-v1-9-0b1a0d093cd5@linaro.org>
Date: Thu, 21 Aug 2025 15:37:28 +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 09/14] arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: Set
 up 4-lane DP

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

Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
 arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
index 4cf61c2a34e31233b1adc93332bcabef22de3f86..9f965a5faaa9b687ad0aa609fe42e4841c7f7d63 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
@@ -994,7 +994,7 @@ &mdss_dp0 {
 };
 
 &mdss_dp0_out {
-	data-lanes = <0 1>;
+	data-lanes = <0 1 2 3>;
 	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
 };
 
@@ -1003,7 +1003,7 @@ &mdss_dp1 {
 };
 
 &mdss_dp1_out {
-	data-lanes = <0 1>;
+	data-lanes = <0 1 2 3>;
 	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
 };
 

-- 
2.34.1