diff --git a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
index f14d36c4615984399b71c36e920ed84be96fcb74..60a79e7c2d1649976a6c6f2b9393ca596e7e1746 100644
--- a/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
+++ b/arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts
@@ -134,13 +134,22 @@
 				nr-ports = <2>;
 				status = "okay";
 			};
+
+			/* Front side USB 0 */
 			usb@50000 {
 				status = "okay";
 			};
+
+			/* Front side USB 1 */
 			usb@51000 {
 				status = "okay";
 			};
 
+			/* USB interface in the mini-PCIe connector */
+			usb@52000 {
+				status = "okay";
+			};
+
 			devbus-bootcs@10400 {
 				status = "okay";
 				ranges = <0 0xf0000000 0x8000000>; /* @addr 0xf000000, size 0x8000000 */