linux-kernel - [PATCH RFC/WIP 4/4] arm64: dts: qcom: sm8750-mtp: Enable DisplayPort over USB

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Message-Id: <20250424-sm8750-display-dts-v1-4-6fb22ca95f38@linaro.org>
Date: Thu, 24 Apr 2025 15:04:28 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...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: Jessica Zhang <jesszhan@...cinc.com>, 
 Abhinav Kumar <abhinavk@...cinc.com>, Abel Vesa <abel.vesa@...aro.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH RFC/WIP 4/4] arm64: dts: qcom: sm8750-mtp: Enable
 DisplayPort over USB

Hook up DisplayPort parts over Type-C USB on MTP8750.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 arch/arm64/boot/dts/qcom/sm8750-mtp.dts | 8 ++++++++
 arch/arm64/boot/dts/qcom/sm8750.dtsi    | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
index c3470e1daa6b7f31196645759be23fb168ce8eb7..69a54ac0f85d5ae20d005a09fbf8da7d769a9c2e 100644
--- a/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
+++ b/arch/arm64/boot/dts/qcom/sm8750-mtp.dts
@@ -910,6 +910,14 @@ &mdss {
 	status = "okay";
 };
 
+&mdss_dp0 {
+	status = "okay";
+};
+
+&mdss_dp0_out {
+	data-lanes = <0 1>;
+};
+
 &mdss_dsi0 {
 	vdda-supply = <&vreg_l3g_1p2>;
 
diff --git a/arch/arm64/boot/dts/qcom/sm8750.dtsi b/arch/arm64/boot/dts/qcom/sm8750.dtsi
index 753b069cab1de636a3b1108747f300bec0f33980..b20fc5b5bdfab598fc7b9be53eef96cc16bc5985 100644
--- a/arch/arm64/boot/dts/qcom/sm8750.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8750.dtsi
@@ -2965,6 +2965,7 @@ port@1 {
 						reg = <1>;
 
 						mdss_dp0_out: endpoint {
+							remote-endpoint = <&usb_dp_qmpphy_dp_in>;
 						};
 					};
 				};
@@ -3064,6 +3065,7 @@ port@2 {
 					reg = <2>;
 
 					usb_dp_qmpphy_dp_in: endpoint {
+						remote-endpoint = <&mdss_dp0_out>;
 					};
 				};
 			};

-- 
2.45.2