diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index 0437e01e8438..661be948ab74 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -1034,6 +1034,14 @@ ltdc: display-controller@5a001000 {
 			status = "disabled";
 		};
 
+		iwdg2: watchdog@5a002000 {
+			compatible = "st,stm32mp1-iwdg";
+			reg = <0x5a002000 0x400>;
+			clocks = <&rcc IWDG2>, <&rcc CK_LSI>;
+			clock-names = "pclk", "lsi";
+			status = "disabled";
+		};
+
 		usbphyc: usbphyc@5a006000 {
 			#address-cells = <1>;
 			#size-cells = <0>;