diff --git a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8xxx-common.dtsi b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8xxx-common.dtsi
index 2edc1805bf2e..2139e851dcfe 100644
--- a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8xxx-common.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8xxx-common.dtsi
@@ -110,6 +110,17 @@
 			no-map;
 		};
 
+		/*
+		 * U-Boot IPC side-door shared memory.
+		 * Written by U-Boot (A53) to send LED commands to the M4.
+		 * Must not be touched by the Linux kernel.
+		 * See UBOOT_IPC_SHMEM_PHYS in wago_m4_led_protocol.h.
+		 */
+		uboot_ipc_shm: uboot-ipc-shm@9cbff000 {
+			reg = <0x00 0x9cbff000 0x00 0x1000>;
+			no-map;
+		};
+
 		mcu_m4fss_dma_memory_region: m4f-dma-memory@9cb00000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0x9cb00000 0x00 0x100000>;