diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
index 73dd50586c64..c8c80cd756d9 100644
--- a/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board.dts
@@ -520,13 +520,13 @@ mbox_mcu_r5fss0_core1: mbox-mcu-r5fss0-core1 {
 &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>;
 };
 
 &ospi0 {