diff --git a/arch/arm/boot/dts/stm32mp157c-dk2.dts b/arch/arm/boot/dts/stm32mp157c-dk2.dts
index ffbae4a8753d9d7dc7f731c21438e8453b973f4a..045636555dddfc44325ebd4e99e30a3a9239dae7 100644
--- a/arch/arm/boot/dts/stm32mp157c-dk2.dts
+++ b/arch/arm/boot/dts/stm32mp157c-dk2.dts
@@ -21,6 +21,7 @@
 		serial0 = &uart4;
 		serial1 = &usart3;
 		serial2 = &uart7;
+		serial3 = &usart2;
 	};
 
 	chosen {
@@ -86,3 +87,11 @@
 		};
 	};
 };
+
+&usart2 {
+	pinctrl-names = "default", "sleep", "idle";
+	pinctrl-0 = <&usart2_pins_c>;
+	pinctrl-1 = <&usart2_sleep_pins_c>;
+	pinctrl-2 = <&usart2_idle_pins_c>;
+	status = "disabled";
+};