diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts b/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts
index 20b0cba01766..de404b2e2f6d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts
@@ -26,3 +26,7 @@
 &chosen {
 	/delete-property/ bootargs;
 };
+
+&fiq_debugger {
+	rockchip,serial-id = <7>;
+};