diff --git a/arch/arm/boot/dts/dra72-evm.dts b/arch/arm/boot/dts/dra72-evm.dts
index 6006ced8f6b33c2462b4fd9366508655072a2cc6..21c5cd13b8076af40ea96d3fb2706d48f8f0a8e1 100644
--- a/arch/arm/boot/dts/dra72-evm.dts
+++ b/arch/arm/boot/dts/dra72-evm.dts
@@ -834,6 +834,8 @@
 	serial-dir = <  /* 0: INACTIVE, 1: TX, 2: RX */
 		1 2 0 0
 	>;
+	tx-num-evt = <32>;
+	rx-num-evt = <32>;
 };
 
 &mailbox5 {