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Message-Id: <20251006-topic-x1e80100-hdmi-v5-3-c006311d59d7@linaro.org>
Date: Mon, 06 Oct 2025 15:55:05 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>
Cc: Xilin Wu <sophon@...xa.com>, linux-arm-msm@...r.kernel.org,
linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>,
Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Subject: [PATCH v5 3/3] arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s:
add HDMI nodes
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.
Reviewed-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
.../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi | 81 ++++++++++++++++++++++
1 file changed, 81 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 654cbce9d6ecb61c8a6e874d16385d66e362e439..7aa7ae66f49a7a179652757fd826e9d11b9b29da 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 +62,45 @@ switch-lid {
};
};
+ hdmi-bridge {
+ compatible = "realtek,rtd2171";
+
+ pinctrl-0 = <&hdmi_hpd_default>;
+ pinctrl-names = "default";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ hdmi_bridge_dp_in: endpoint {
+ remote-endpoint = <&usb_1_ss2_qmpphy_out_dp>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ hdmi_bridge_tmds_out: endpoint {
+ remote-endpoint = <&hdmi_con>;
+ };
+ };
+ };
+ };
+
+ hdmi-connector {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_con: endpoint {
+ remote-endpoint = <&hdmi_bridge_tmds_out>;
+ };
+ };
+ };
+
pmic-glink {
compatible = "qcom,x1e80100-pmic-glink",
"qcom,sm8550-pmic-glink",
@@ -1028,6 +1067,14 @@ &mdss_dp1_out {
link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
};
+&mdss_dp2 {
+ status = "okay";
+};
+
+&mdss_dp2_out {
+ link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
+};
+
&mdss_dp3 {
/delete-property/ #sound-dai-cells;
@@ -1317,6 +1364,12 @@ eusb6_reset_n: eusb6-reset-n-state {
output-low;
};
+ hdmi_hpd_default: hdmi-hpd-default-state {
+ pins = "gpio126";
+ function = "usb2_dp";
+ bias-disable;
+ };
+
tpad_default: tpad-default-state {
pins = "gpio3";
function = "gpio";
@@ -1548,6 +1601,34 @@ &usb_1_ss1_qmpphy_out {
remote-endpoint = <&retimer_ss1_ss_in>;
};
+&usb_1_ss2_qmpphy {
+ vdda-phy-supply = <&vreg_l2j_1p2>;
+ vdda-pll-supply = <&vreg_l2d_0p9>;
+
+ /delete-property/ mode-switch;
+ /delete-property/ orientation-switch;
+
+ status = "okay";
+
+ ports {
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /delete-node/ endpoint;
+
+ usb_1_ss2_qmpphy_out_dp: endpoint@0 {
+ reg = <0>;
+
+ data-lanes = <3 2 1 0>;
+ remote-endpoint = <&hdmi_bridge_dp_in>;
+ };
+
+ /* No USB3 lanes connected */
+ };
+ };
+};
+
&usb_2 {
status = "okay";
};
--
2.34.1
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