diff --git a/arch/arm/dts/stm32mp157-u-boot.dtsi b/arch/arm/dts/stm32mp157-u-boot.dtsi
index ab6f673..09560e2 100644
--- a/arch/arm/dts/stm32mp157-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp157-u-boot.dtsi
@@ -140,3 +140,7 @@
 	compatible = "st,stm32-gpio";
 	u-boot,dm-pre-reloc;
 };
+
+&iwdg2 {
+	u-boot,dm-pre-reloc;
+};