diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 074d70b191e2..a7b4707a0d05 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -904,6 +904,8 @@
 	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
 		1 2 0 0
 	>;
+	tx-num-evt = <32>;
+	rx-num-evt = <32>;
 };
 
 &mailbox5 {