linux-kernel - [PATCH v5 6/6] arm64: dts: qcom: x1e80100-t14s: Enable external DisplayPort support

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Message-Id: <20241112-x1e80100-ps8830-v5-6-4ad83af4d162@linaro.org>
Date: Tue, 12 Nov 2024 19:01:15 +0200
From: Abel Vesa <abel.vesa@...aro.org>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: Rajendra Nayak <quic_rjendra@...cinc.com>, 
 Sibi Sankar <quic_sibis@...cinc.com>, Johan Hovold <johan@...nel.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 Trilok Soni <quic_tsoni@...cinc.com>, 
 Christophe JAILLET <christophe.jaillet@...adoo.fr>, 
 linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH v5 6/6] arm64: dts: qcom: x1e80100-t14s: Enable external
 DisplayPort support

The Lenovo ThinkPad T14s Gen6 provides external DisplayPort on all
2 USB Type-C ports. Each one of this ports is connected to a dedicated
DisplayPort controller.

Due to support missing in the USB/DisplayPort combo PHY driver,
the external DisplayPort is limited to 2 lanes.

So enable the first and second DisplayPort controllers and limit their
data lanes number to 2.

Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
 .../boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
index ea3ecc7c5bda24f3a0a7bb027b456462b11daf4d..b08a173f0cfe2a2fc241a4e689d35b5e7e03d7e1 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
@@ -746,6 +746,22 @@ &mdss {
 	status = "okay";
 };
 
+&mdss_dp0 {
+	status = "okay";
+};
+
+&mdss_dp0_out {
+	data-lanes = <0 1>;
+};
+
+&mdss_dp1 {
+	status = "okay";
+};
+
+&mdss_dp1_out {
+	data-lanes = <0 1>;
+};
+
 &mdss_dp3 {
 	compatible = "qcom,x1e80100-dp";
 	/delete-property/ #sound-dai-cells;

-- 
2.34.1