diff --git a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
index 61a634afaa4f..0368b04700a1 100644
--- a/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am65-iot2050-common.dtsi
@@ -1418,13 +1418,13 @@
 &mcu_r5fss0_core0 {
 	memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
 			<&mcu_r5fss0_core0_memory_region>;
-	mboxes = <&mailbox0_cluster0>, <&mbox_mcu_r5fss0_core0>;
+	mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core0>;
 };
 
 &mcu_r5fss0_core1 {
 	memory-region = <&mcu_r5fss0_core1_dma_memory_region>,
 			<&mcu_r5fss0_core1_memory_region>;
-	mboxes = <&mailbox0_cluster1>, <&mbox_mcu_r5fss0_core1>;
+	mboxes = <&mailbox0_cluster1 &mbox_mcu_r5fss0_core1>;
 };
 
 &icssg0_mdio {