diff --git a/arch/arm/dts/phycore-imx8mm-u-boot.dtsi b/arch/arm/dts/phycore-imx8mm-u-boot.dtsi
index 91515b8df9..7c2dfb4a27 100644
--- a/arch/arm/dts/phycore-imx8mm-u-boot.dtsi
+++ b/arch/arm/dts/phycore-imx8mm-u-boot.dtsi
@@ -30,6 +30,10 @@
 	u-boot,dm-spl;
 };
 
+&pinctrl_wdog {
+	u-boot,dm-spl;
+};
+
 &gpio1 {
 	u-boot,dm-spl;
 };