On 22/08/2025 13:01, Dmitry Baryshkov wrote:
On Thu, Aug 21, 2025 at 03:53:28PM +0200, Neil Armstrong wrote:
The Thinkpad T14s embeds a transparent 4lanes DP->HDMI transceiver
connected to the third QMP Combo PHY 4 lanes.
Add all the data routing, disable mode switching and specify the
QMP Combo PHY should be in DP-Only mode to route the 4 lanes to
the underlying DP phy.
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
.../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
index 4cf61c2a34e31233b1adc93332bcabef22de3f86..5b62b8c3123633360f249e3ecdc8ea23f44e8e09 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
@@ -62,6 +62,20 @@ switch-lid {
};
};
+
+ hdmi-connector {
+ compatible = "hdmi-connector";
+ type = "a";
+ pinctrl-0 = <&hdmi_hpd_default>;
+ pinctrl-names = "default";
If this is a DP HPD signal, it should be a part of the DP device.
+
+ port {
+ hdmi_con: endpoint {
+ remote-endpoint = <&usb_1_ss2_qmpphy_out>;
Please describe the transparent bridge too. It can be covered by the
simple-bridge.yaml / simple-bridge.c
Ack, indeed it could take the pinctrl thing.
Neil
+ };
+ };
+ };
+
pmic-glink {
compatible = "qcom,x1e80100-pmic-glink",
"qcom,sm8550-pmic-glink",
@@ -1007,6 +1021,14 @@ &mdss_dp1_out {
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
};
+&mdss_dp2 {
+ status = "okay";
+};
+
+&mdss_dp2_out {
+ data-lanes = <0 1 2 3>;
+};
+
&mdss_dp3 {
/delete-property/ #sound-dai-cells;
@@ -1263,6 +1285,12 @@ &tlmm {
<72 2>, /* Secure EC I2C connection (?) */
<238 1>; /* UFS Reset */
+ hdmi_hpd_default: hdmi-hpd-default-state {
+ pins = "gpio126";
+ function = "usb2_dp";
+ bias-disable;
+ };
+
eusb3_reset_n: eusb3-reset-n-state {
pins = "gpio6";
function = "gpio";
@@ -1486,6 +1514,22 @@ &usb_1_ss0_qmpphy_out {
remote-endpoint = <&retimer_ss0_ss_in>;
};
+&usb_1_ss2_qmpphy {
+ vdda-phy-supply = <&vreg_l2j_1p2>;
+ vdda-pll-supply = <&vreg_l2d_0p9>;
+
+ qcom,combo-initial-mode = "dp";
+
+ /delete-property/ mode-switch;
+ /delete-property/ orientation-switch;
+
+ status = "okay";
+};
+
+&usb_1_ss2_qmpphy_out {
+ remote-endpoint = <&hdmi_con>;
+};
+
&usb_1_ss1_hsphy {
vdd-supply = <&vreg_l3j_0p8>;
vdda12-supply = <&vreg_l2j_1p2>;
--
2.34.1
