From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Both ports seem to work, just like on other X1E laptops.

Tested with a Type-C-to-HDMI2.0 dock (translating into up to 2 DP lanes
worth of bandwidth).

Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
---
 .../boot/dts/qcom/x1e80100-microsoft-romulus.dtsi      | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
index 26ae19b34b37e0e3c67eb4543de898e94e62c678..0fd8516580b2679ee425438cb73fd4078cb20581 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100-microsoft-romulus.dtsi
@@ -944,6 +944,24 @@ &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;
 

---
base-commit: edef457004774e598fc4c1b7d1d4f0bcd9d0bb30
change-id: 20250514-topic-romu_dp-10129c7b7cfa

Best regards,
-- 
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

On Wed, 14 May 2025 19:47:16 +0200, Konrad Dybcio wrote:
> Both ports seem to work, just like on other X1E laptops.
> 
> Tested with a Type-C-to-HDMI2.0 dock (translating into up to 2 DP lanes
> worth of bandwidth).
> 
> 

Applied, thanks!

[1/1] arm64: dts: qcom: x1e80100-romulus: Enable DP over Type-C
      commit: 781621de1551233f6767976b44e93745ffcfa865

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>

On Wed, May 14, 2025 at 07:47:16PM +0200, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> 
> Both ports seem to work, just like on other X1E laptops.
> 
> Tested with a Type-C-to-HDMI2.0 dock (translating into up to 2 DP lanes
> worth of bandwidth).
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> ---
>  .../boot/dts/qcom/x1e80100-microsoft-romulus.dtsi      | 18 ++++++++++++++++++
>  1 file changed, 18 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>

-- 
With best wishes
Dmitry