diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
index ca07f6032200..ea607a601a86 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi
@@ -262,6 +262,13 @@ pp3300_trackpad: pp3300-trackpad {
 	pp5000_usb_a_vbus: pp5000 {
 	};
 
+	ap_rtc_clk: ap-rtc-clk {
+		compatible = "fixed-clock";
+		clock-frequency = <32768>;
+		clock-output-names = "xin32k";
+		#clock-cells = <0>;
+	};
+
 	gpio_keys: gpio-keys {
 		compatible = "gpio-keys";
 		pinctrl-names = "default";