diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h
index d82e3b63d44259de7f125973dd203308e8c61e63..f9078bd7f86f552f9579b1d66de104bfef360e96 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet.h
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h
@@ -380,6 +380,7 @@ struct axidma_bd {
  * @dev:	Pointer to device structure
  * @phy_node:	Pointer to device node structure
  * @mii_bus:	Pointer to MII bus structure
+ * @regs_start: Resource start for axienet device addresses
  * @regs:	Base address for the axienet_local device address space
  * @dma_regs:	Base address for the axidma device address space
  * @dma_err_tasklet: Tasklet structure to process Axi DMA errors
@@ -421,6 +422,7 @@ struct axienet_local {
 	struct mii_bus *mii_bus;	/* MII bus reference */
 
 	/* IO registers, dma functions and IRQs */
+	resource_size_t regs_start;
 	void __iomem *regs;
 	void __iomem *dma_regs;
 
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 55beca100999f52efd86d413232f0724dc135d89..ffbd4d762534d2968ed9e44acef7631324ac04cf 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -1480,6 +1480,7 @@ static int axienet_probe(struct platform_device *pdev)
 	lp->options = XAE_OPTION_DEFAULTS;
 	/* Map device registers */
 	ethres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	lp->regs_start = ethres->start;
 	lp->regs = devm_ioremap_resource(&pdev->dev, ethres);
 	if (IS_ERR(lp->regs)) {
 		dev_err(&pdev->dev, "could not map Axi Ethernet regs.\n");
diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
index 704babdbc8a222a68510476ce9625dd305820a01..665ae1d16f1e2479592ec71b52be591bd2f3d1d2 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c
@@ -127,7 +127,7 @@ int axienet_mdio_setup(struct axienet_local *lp, struct device_node *np)
 	int ret;
 	u32 clk_div, host_clock;
 	struct mii_bus *bus;
-	struct resource res;
+	struct device_node *mdio_node;
 	struct device_node *np1;
 
 	/* clk_div can be calculated by deriving it from the equation:
@@ -199,10 +199,9 @@ int axienet_mdio_setup(struct axienet_local *lp, struct device_node *np)
 	if (!bus)
 		return -ENOMEM;
 
-	np1 = of_get_parent(lp->phy_node);
-	of_address_to_resource(np1, 0, &res);
-	snprintf(bus->id, MII_BUS_ID_SIZE, "%.8llx",
-		 (unsigned long long) res.start);
+	mdio_node = of_get_parent(lp->phy_node);
+	snprintf(bus->id, MII_BUS_ID_SIZE, "axienet-%.8llx",
+		 (unsigned long long)lp->regs_start);
 
 	bus->priv = lp;
 	bus->name = "Xilinx Axi Ethernet MDIO";
@@ -211,7 +210,7 @@ int axienet_mdio_setup(struct axienet_local *lp, struct device_node *np)
 	bus->parent = lp->dev;
 	lp->mii_bus = bus;
 
-	ret = of_mdiobus_register(bus, np1);
+	ret = of_mdiobus_register(bus, mdio_node);
 	if (ret) {
 		mdiobus_free(bus);
 		lp->mii_bus = NULL;