1 files changed, 40 insertions, 13 deletions

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index e866608d7d91..92578690f6de 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -27,6 +27,7 @@
 #include <linux/phy.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/of_mdio.h>
 #include <linux/of_net.h>
 #include <linux/pinctrl/consumer.h>
 
@@ -124,7 +125,7 @@ void macb_get_hwaddr(struct macb *bp)
 	u8 addr[6];
 	int i;
 
-	pdata = bp->pdev->dev.platform_data;
+	pdata = dev_get_platdata(&bp->pdev->dev);
 
 	/* Check all 4 address register for vaild address */
 	for (i = 0; i < 4; i++) {
@@ -275,7 +276,7 @@ static int macb_mii_probe(struct net_device *dev)
 	phydev = phy_find_first(bp->mii_bus);
 	if (!phydev) {
 		netdev_err(dev, "no PHY found\n");
-		return -1;
+		return -ENXIO;
 	}
 
 	pdata = dev_get_platdata(&bp->pdev->dev);
@@ -314,6 +315,7 @@ static int macb_mii_probe(struct net_device *dev)
 int macb_mii_init(struct macb *bp)
 {
 	struct macb_platform_data *pdata;
+	struct device_node *np;
 	int err = -ENXIO, i;
 
 	/* Enable management port */
@@ -333,10 +335,7 @@ int macb_mii_init(struct macb *bp)
 		bp->pdev->name, bp->pdev->id);
 	bp->mii_bus->priv = bp;
 	bp->mii_bus->parent = &bp->dev->dev;
-	pdata = bp->pdev->dev.platform_data;
-
-	if (pdata)
-		bp->mii_bus->phy_mask = pdata->phy_mask;
+	pdata = dev_get_platdata(&bp->pdev->dev);
 
 	bp->mii_bus->irq = kmalloc(sizeof(int)*PHY_MAX_ADDR, GFP_KERNEL);
 	if (!bp->mii_bus->irq) {
@@ -344,17 +343,45 @@ int macb_mii_init(struct macb *bp)
 		goto err_out_free_mdiobus;
 	}
 
-	for (i = 0; i < PHY_MAX_ADDR; i++)
-		bp->mii_bus->irq[i] = PHY_POLL;
-
 	dev_set_drvdata(&bp->dev->dev, bp->mii_bus);
 
-	if (mdiobus_register(bp->mii_bus))
+	np = bp->pdev->dev.of_node;
+	if (np) {
+		/* try dt phy registration */
+		err = of_mdiobus_register(bp->mii_bus, np);
+
+		/* fallback to standard phy registration if no phy were
+		   found during dt phy registration */
+		if (!err && !phy_find_first(bp->mii_bus)) {
+			for (i = 0; i < PHY_MAX_ADDR; i++) {
+				struct phy_device *phydev;
+
+				phydev = mdiobus_scan(bp->mii_bus, i);
+				if (IS_ERR(phydev)) {
+					err = PTR_ERR(phydev);
+					break;
+				}
+			}
+
+			if (err)
+				goto err_out_unregister_bus;
+		}
+	} else {
+		for (i = 0; i < PHY_MAX_ADDR; i++)
+			bp->mii_bus->irq[i] = PHY_POLL;
+
+		if (pdata)
+			bp->mii_bus->phy_mask = pdata->phy_mask;
+
+		err = mdiobus_register(bp->mii_bus);
+	}
+
+	if (err)
 		goto err_out_free_mdio_irq;
 
-	if (macb_mii_probe(bp->dev) != 0) {
+	err = macb_mii_probe(bp->dev);
+	if (err)
 		goto err_out_unregister_bus;
-	}
 
 	return 0;
 
@@ -1824,7 +1851,7 @@ static int __init macb_probe(struct platform_device *pdev)
 
 	err = of_get_phy_mode(pdev->dev.of_node);
 	if (err < 0) {
-		pdata = pdev->dev.platform_data;
+		pdata = dev_get_platdata(&pdev->dev);
 		if (pdata && pdata->is_rmii)
 			bp->phy_interface = PHY_INTERFACE_MODE_RMII;
 		else