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.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20250304-x1e80100-dts-crd-t14s-enable-typec-retimers-v6-4-e5a49fae4e94@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

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 9c0903b8436396b2fe6e17ee3bc4d454cb5a0f8b..05b2f3bf1fc81c1b10e375b5335377c9ce39be95 100644 (file)
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dts
@@ -923,6 +923,22 @@
        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;