Subject: [PATCH v15 9/9] arm64: dts: rockchip: rk3399-evb-ind: Add support for DisplayPort

From: Chaoyi Chen <[email-masked]>
Date: Wed, 4 Mar 2026 17:41:52 +0800

From: Chaoyi Chen <[email-masked]>

The RK3399 EVB IND board has a Type-C interface DisplayPort.
It use fusb302 chip as Type-C controller.

fusb302 chip ---> USB/DP PHY0 <----> CDN-DP controller

Signed-off-by: Chaoyi Chen <[email-masked]>
---

(no changes since v10)

Changes in v9:
- Add usb role switch for Type-C.
- Remove USB2 PHY in Type-C connection.

(no changes since v4)

Changes in v3:
- Fix wrong vdo value.
- Fix port node in usb-c-connector.

Changes in v2:
- Add endpoint to link DP PHY and DP controller.
- Fix devicetree coding style.
---

 .../boot/dts/rockchip/rk3399-evb-ind.dts      | 147 ++++++++++++++++++
 1 file changed, 147 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts b/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
index 70aee1ab904c..be1e90f7a453 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-evb-ind.dts
@@ -4,6 +4,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/usb/pd.h>
 #include "rk3399.dtsi"
 
 / {
@@ -19,6 +20,21 @@ chosen {
 		stdout-path = "serial2:1500000n8";
 	};
 
+	sound: sound {
+		compatible = "rockchip,rk3399-gru-sound";
+		rockchip,cpu = <&i2s0 &spdif>;
+	};
+
+	vbus_typec: regulator-vbus-typec {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio1 RK_PC2 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc5v0_typec0_en>;
+		regulator-name = "vbus_typec";
+		vin-supply = <&vcc5v0_sys>;
+	};
+
 	vcc5v0_sys: regulator-vcc5v0-sys {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -31,6 +47,11 @@ vcc5v0_sys: regulator-vcc5v0-sys {
 	};
 };
 
+&cdn_dp {
+	phys = <&tcphy0_dp>;
+	status = "okay";
+};
+
 &cpu_b0 {
 	cpu-supply = <&vdd_cpu_b>;
 };
@@ -55,6 +76,12 @@ &cpu_l3 {
 	cpu-supply = <&vdd_cpu_l>;
 };
 
+&dp_out {
+	dp_controller_output: endpoint {
+		remote-endpoint = <&dp_phy_in>;
+	};
+};
+
 &emmc_phy {
 	status = "okay";
 };
@@ -341,6 +368,71 @@ regulator-state-mem {
 	};
 };
 
+&i2c4 {
+	i2c-scl-rising-time-ns = <475>;
+	i2c-scl-falling-time-ns = <26>;
+	status = "okay";
+
+	usbc0: typec-portc@22 {
+		compatible = "fcs,fusb302";
+		reg = <0x22>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <RK_PA2 IRQ_TYPE_LEVEL_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usbc0_int>;
+		vbus-supply = <&vbus_typec>;
+
+		usb_con: connector {
+			compatible = "usb-c-connector";
+			label = "USB-C";
+			data-role = "dual";
+			power-role = "dual";
+			try-power-role = "sink";
+			op-sink-microwatt = <1000000>;
+			sink-pdos =
+				<PDO_FIXED(5000, 2500, PDO_FIXED_USB_COMM)>;
+			source-pdos =
+				<PDO_FIXED(5000, 1500, PDO_FIXED_USB_COMM)>;
+
+			altmodes {
+				displayport {
+					svid = /bits/ 16 <0xff01>;
+					vdo = <0x00001c46>;
+				};
+			};
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+
+					usbc0_orien_sw: endpoint {
+						remote-endpoint = <&tcphy0_orientation_switch>;
+					};
+				};
+
+				port@1 {
+					reg = <1>;
+
+					usbc0_role_sw: endpoint {
+						remote-endpoint = <&dwc3_0_role_switch>;
+					};
+				};
+
+				port@2 {
+					reg = <2>;
+
+					dp_altmode_mux: endpoint {
+						remote-endpoint = <&tcphy0_typec_dp>;
+					};
+				};
+			};
+		};
+	};
+};
+
 &i2s2 {
 	status = "okay";
 };
@@ -354,6 +446,16 @@ &io_domains {
 };
 
 &pinctrl {
+	usb-typec {
+		usbc0_int: usbc0-int {
+			rockchip,pins = <1 RK_PA2 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+
+		vcc5v0_typec0_en: vcc5v0-typec0-en {
+			rockchip,pins = <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	pmic {
 		pmic_int_l: pmic-int-l {
 			rockchip,pins = <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_up>;
@@ -400,10 +502,48 @@ &sdmmc {
 	status = "okay";
 };
 
+&sound {
+	rockchip,codec = <&cdn_dp>;
+	status = "okay";
+};
+
+&spdif {
+	status = "okay";
+};
+
 &tcphy0 {
 	status = "okay";
 };
 
+&tcphy0_dp {
+	mode-switch;
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		tcphy0_typec_dp: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&dp_altmode_mux>;
+		};
+
+		dp_phy_in: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&dp_controller_output>;
+		};
+	};
+};
+
+&tcphy0_usb3 {
+	orientation-switch;
+
+	port {
+		tcphy0_orientation_switch: endpoint {
+			remote-endpoint = <&usbc0_orien_sw>;
+		};
+	};
+};
+
 &tcphy1 {
 	status = "okay";
 };
@@ -461,7 +601,14 @@ &usb_host1_ohci {
 };
 
 &usbdrd_dwc3_0 {
+	usb-role-switch;
 	status = "okay";
+
+	port {
+		dwc3_0_role_switch: endpoint {
+			remote-endpoint = <&usbc0_role_sw>;
+		};
+	};
 };
 
 &usbdrd3_0 {
-- 
2.51.1