diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index 3bfda16..0e8336e 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -641,6 +641,8 @@
 			reg = <0x4a0f4000 0x200>;
 			interrupts = <GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>;
 			ti,hwmods = "mailbox";
+			ti,mbox-num-users = <3>;
+			ti,mbox-num-fifos = <8>;
 		};
 
 		timer1: timer@4ae18000 {