diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index d23e2524d694e95512a0ab967c6ef4fd9c1b8314..ee26e2a9abecf86ffc4b1c0aabbf3049df24917b 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -399,6 +399,7 @@
 			ti,mbox-num-users = <4>;
 			ti,mbox-num-fifos = <8>;
 			mbox_wkupm3: wkup_m3 {
+				ti,mbox-send-noirq;
 				ti,mbox-tx = <0 0 0>;
 				ti,mbox-rx = <0 0 3>;
 			};