diff --git a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
index 905cd7bb98cf..ec02cee1dd9b 100644
--- a/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
+++ b/arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
@@ -351,6 +351,7 @@ &uart7 {
 	label = "LS-UART0";
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart7_pins_a>;
+	uart-has-rtscts;
 	status = "okay";
 };