diff --git a/arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator-linux.dts b/arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator-linux.dts
index 80bb7fb86e4e..5e8c40faff4a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator-linux.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator-linux.dts
@@ -49,6 +49,17 @@
 	model = "Rockchip RK3399 Excavator Board (Linux Opensource)";
 	compatible = "rockchip,rk3399-excavator-linux", "rockchip,rk3399";
 
+	fiq_debugger: fiq-debugger {
+		compatible = "rockchip,fiq-debugger";
+		rockchip,serial-id = <2>;
+		rockchip,signal-irq = <182>;
+		rockchip,wake-irq = <0>;
+		rockchip,irq-mode-enable = <1>;  /* If enable uart uses irq instead of fiq */
+		rockchip,baudrate = <1500000>;  /* Only 115200 and 1500000 */
+		pinctrl-names = "default";
+		pinctrl-0 = <&uart2c_xfer>;
+	};
+
 	edp_panel: edp-panel {
 		compatible = "lg,lp079qx1-sp0v", "panel-simple";
 		backlight = <&backlight>;