diff --git a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
index 8db1ec4a3b26..a422b32d71d1 100644
--- a/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
+++ b/arch/arm/boot/dts/st/stm32mp13-pinctrl.dtsi
@@ -594,6 +594,13 @@
 		};
 	};
 
+	/omit-if-no-ref/
+	rtc_rsvd_pins_a: rtc-rsvd-0 {
+		pins {
+			pinmux = <STM32_PINMUX('I', 1, ANALOG)>; /* RTC_OUT2_RMP */
+		};
+	};
+
 	/omit-if-no-ref/
 	sai1a_pins_a: sai1a-0 {
 		pins {