diff --git a/arch/arm/boot/dts/omap2420.dtsi b/arch/arm/boot/dts/omap2420.dtsi
index e83b046..6d21994 100644
--- a/arch/arm/boot/dts/omap2420.dtsi
+++ b/arch/arm/boot/dts/omap2420.dtsi
@@ -157,6 +157,8 @@
 			interrupts = <26>, <34>;
 			interrupt-names = "dsp", "iva";
 			ti,hwmods = "mailbox";
+			ti,mbox-num-users = <4>;
+			ti,mbox-num-fifos = <6>;
 		};
 
 		timer1: timer@48028000 {
diff --git a/arch/arm/boot/dts/omap2430.dtsi b/arch/arm/boot/dts/omap2430.dtsi
index c4e8013..aa6a354 100644
--- a/arch/arm/boot/dts/omap2430.dtsi
+++ b/arch/arm/boot/dts/omap2430.dtsi
@@ -247,6 +247,8 @@
 			reg = <0x48094000 0x200>;
 			interrupts = <26>;
 			ti,hwmods = "mailbox";
+			ti,mbox-num-users = <4>;
+			ti,mbox-num-fifos = <6>;
 		};
 
 		timer1: timer@49018000 {
diff --git a/arch/arm/boot/dts/omap3.dtsi b/arch/arm/boot/dts/omap3.dtsi
index b2891a9..575a49b 100644
--- a/arch/arm/boot/dts/omap3.dtsi
+++ b/arch/arm/boot/dts/omap3.dtsi
@@ -332,6 +332,8 @@
 			ti,hwmods = "mailbox";
 			reg = <0x48094000 0x200>;
 			interrupts = <26>;
+			ti,mbox-num-users = <2>;
+			ti,mbox-num-fifos = <2>;
 		};
 
 		mcspi1: spi@48098000 {
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 {