diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi
index e2a2fc9070f0..a8e6e0f77b83 100644
--- a/arch/arm64/boot/dts/st/stm32mp251.dtsi
+++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi
@@ -1940,6 +1940,7 @@ exti1: interrupt-controller@44220000 {
 		syscfg: syscon@44230000 {
 			compatible = "st,stm32mp25-syscfg", "syscon";
 			reg = <0x44230000 0x10000>;
+			#clock-cells = <0>;
 		};
 
 		pinctrl: pinctrl@44240000 {