[PATCH v1 1/4] arm64: dts: qcom: x1e80100-dell-xps13-9345: Enable external DP support

Aleksandrs Vinarskis
2025-02-26T23:14:54Z

Particular laptops comes with two USB Type-C ports, both supporting DP
alt mode. Enable output on both of them. Explicitly list supported
frequencies including HBR3/8.1Gbps for all external DisplayPort(s).

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

Derived from:
arm64: dts: qcom: x1e80100-t14s: Add external DP support

Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@gmail.com>
---
.../boot/dts/qcom/x1e80100-dell-xps13-9345.dts | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
index 86e87f03b0ec..124051334be0 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-dell-xps13-9345.dts
@@ -770,6 +770,24 @@ &mdss {
status = "okay";
};

+&mdss_dp0 {
+ status = "okay";
+};
+
+&mdss_dp0_out {
+ data-lanes = <0 1>;
+ link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
+};
+
+&mdss_dp1 {
+ status = "okay";
+};
+
+&mdss_dp1_out {
+ data-lanes = <0 1>;
+ link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
+};
+
&mdss_dp3 {
/delete-property/ #sound-dai-cells;

--
2.45.2