diff --git a/arch/arm/boot/dts/stm32mp157c-dk2.dts b/arch/arm/boot/dts/stm32mp157c-dk2.dts
index 363aeb91d1d6..20ea601a546d 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2.dts
@@ -50,6 +50,7 @@
 		compatible = "orisetech,otm8009a";
 		reg = <0>;
 		reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
+		power-supply = <&v3v3>;
 		status = "okay";
 
 		port {