diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi
index 5b11c7bb93f36c494a50e0448c744cf7c455620a..60e8c198e981fc1fbe22a081066f76cad80c7818 100644
--- a/arch/arm/boot/dts/ste-dbx5x0.dtsi
+++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi
@@ -57,6 +57,10 @@
 			prcc_kclk: prcc-kernel-clock {
 				#clock-cells = <2>;
 			};
+
+			rtc_clk: rtc32k-clock {
+				#clock-cells = <0>;
+			};
 		};
 
 		timer@a0410600 {