diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index a316187967eaf053df248dcae4fd2f5a488f23c9..50f3c50852fb49654c322f94962ff02a8625a33e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -24,14 +24,50 @@
 *******************************************************************************/
 
 #include <linux/pci.h>
+#include <linux/dmi.h>
+
 #include "stmmac.h"
 
+/*
+ * This struct is used to associate PCI Function of MAC controller on a board,
+ * discovered via DMI, with the address of PHY connected to the MAC. The
+ * negative value of the address means that MAC controller is not connected
+ * with PHY.
+ */
+struct stmmac_pci_dmi_data {
+	const char *name;
+	unsigned int func;
+	int phy_addr;
+};
+
 struct stmmac_pci_info {
 	struct pci_dev *pdev;
 	int (*setup)(struct plat_stmmacenet_data *plat,
 		     struct stmmac_pci_info *info);
+	struct stmmac_pci_dmi_data *dmi;
 };
 
+static int stmmac_pci_find_phy_addr(struct stmmac_pci_info *info)
+{
+	const char *name = dmi_get_system_info(DMI_BOARD_NAME);
+	unsigned int func = PCI_FUNC(info->pdev->devfn);
+	struct stmmac_pci_dmi_data *dmi;
+
+	/*
+	 * Galileo boards with old firmware don't support DMI. We always return
+	 * 1 here, so at least first found MAC controller would be probed.
+	 */
+	if (!name)
+		return 1;
+
+	for (dmi = info->dmi; dmi->name && *dmi->name; dmi++) {
+		if (!strcmp(dmi->name, name) && dmi->func == func)
+			return dmi->phy_addr;
+	}
+
+	return -ENODEV;
+}
+
 static void stmmac_default_data(struct plat_stmmacenet_data *plat)
 {
 	plat->bus_id = 1;
@@ -58,9 +94,18 @@ static int quark_default_data(struct plat_stmmacenet_data *plat,
 			      struct stmmac_pci_info *info)
 {
 	struct pci_dev *pdev = info->pdev;
+	int ret;
+
+	/*
+	 * Refuse to load the driver and register net device if MAC controller
+	 * does not connect to any PHY interface.
+	 */
+	ret = stmmac_pci_find_phy_addr(info);
+	if (ret < 0)
+		return ret;
 
 	plat->bus_id = PCI_DEVID(pdev->bus->number, pdev->devfn);
-	plat->phy_addr = 1;
+	plat->phy_addr = ret;
 	plat->interface = PHY_INTERFACE_MODE_RMII;
 	plat->clk_csr = 2;
 	plat->has_gmac = 1;
@@ -82,8 +127,23 @@ static int quark_default_data(struct plat_stmmacenet_data *plat,
 	return 0;
 }
 
+static struct stmmac_pci_dmi_data quark_pci_dmi_data[] = {
+	{
+		.name = "Galileo",
+		.func = 6,
+		.phy_addr = 1,
+	},
+	{
+		.name = "GalileoGen2",
+		.func = 6,
+		.phy_addr = 1,
+	},
+	{}
+};
+
 static struct stmmac_pci_info quark_pci_info = {
 	.setup = quark_default_data,
+	.dmi = quark_pci_dmi_data,
 };
 
 /**