[PATCH v3 5/5] arm64: dts: qcom: x1e78100-lenovo-thinkpad-t14s: add HDMI nodes

[Neil Armstrong <neil.armstrong@linaro.org>]

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@linaro.org>
---
 .../dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi    | 82 ++++++++++++++++++++++
 1 file changed, 82 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 23213b0d9582822e9503e4acf18c62d5c8c7867d..077aa71e79b548cb1f7c76d297a6afae717f7663 100644
--- a/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e78100-lenovo-thinkpad-t14s.dtsi
@@ -9,6 +9,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/gpio-keys.h>
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/phy/phy.h>
 #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 
@@ -62,6 +63,45 @@ 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",
@@ -1005,6 +1045,14 @@ &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;
 
@@ -1264,6 +1312,12 @@ &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";
@@ -1487,6 +1541,34 @@ &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>;
+
+	/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 = <0 1 2 3>;
+				remote-endpoint = <&hdmi_bridge_dp_in>;
+			};
+
+			/* No USB3 lanes connected */
+		};
+	};
+};
+
 &usb_1_ss1_hsphy {
 	vdd-supply = <&vreg_l3j_0p8>;
 	vdda12-supply = <&vreg_l2j_1p2>;

-- 
2.34.1


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