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@xxxxxxxxxxxxxxxx>
Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
---
.../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 9c0903b8436396b2fe6e17ee3bc4d454cb5a0f8b..05b2f3bf1fc81c1b10e375b5335377c9ce39be95 100644
--- 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 @@ &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
