diff --git a/dts/arm/microchip/mec1501hsz.dtsi b/dts/arm/microchip/mec1501hsz.dtsi
index e2f8e690972..7a228a892c1 100644
--- a/dts/arm/microchip/mec1501hsz.dtsi
+++ b/dts/arm/microchip/mec1501hsz.dtsi
@@ -43,6 +43,8 @@
 			reg = <0x40007400 0x10>;
 			interrupts = <111 0>;
 			label = "RTIMER";
+			girq = <23>;
+			girq-bit = <10>;
 		};
 		wdog: watchdog@40000400 {
 			compatible = "microchip,xec-watchdog";