diff options
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index dc8d3e726e75..9b7af94a40bb 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/of.h> +#include <linux/of_mdio.h> #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/property.h> @@ -1619,8 +1620,13 @@ static int ftgmac100_setup_mdio(struct net_device *netdev) if (!priv->mii_bus) return -EIO; - if (priv->is_aspeed) { - /* This driver supports the old MDIO interface */ + if (of_device_is_compatible(np, "aspeed,ast2400-mac") || + of_device_is_compatible(np, "aspeed,ast2500-mac")) { + /* The AST2600 has a separate MDIO controller */ + + /* For the AST2400 and AST2500 this driver only supports the + * old MDIO interface + */ reg = ioread32(priv->base + FTGMAC100_OFFSET_REVR); reg &= ~FTGMAC100_REVR_NEW_MDIO_INTERFACE; iowrite32(reg, priv->base + FTGMAC100_OFFSET_REVR); @@ -1797,7 +1803,8 @@ static int ftgmac100_probe(struct platform_device *pdev) np = pdev->dev.of_node; if (np && (of_device_is_compatible(np, "aspeed,ast2400-mac") || - of_device_is_compatible(np, "aspeed,ast2500-mac"))) { + of_device_is_compatible(np, "aspeed,ast2500-mac") || + of_device_is_compatible(np, "aspeed,ast2600-mac"))) { priv->rxdes0_edorr_mask = BIT(30); priv->txdes0_edotr_mask = BIT(30); priv->is_aspeed = true; @@ -1817,7 +1824,29 @@ static int ftgmac100_probe(struct platform_device *pdev) priv->ndev = ncsi_register_dev(netdev, ftgmac100_ncsi_handler); if (!priv->ndev) goto err_ncsi_dev; - } else { + } else if (np && of_get_property(np, "phy-handle", NULL)) { + struct phy_device *phy; + + phy = of_phy_get_and_connect(priv->netdev, np, + &ftgmac100_adjust_link); + if (!phy) { + dev_err(&pdev->dev, "Failed to connect to phy\n"); + goto err_setup_mdio; + } + + /* Indicate that we support PAUSE frames (see comment in + * Documentation/networking/phy.txt) + */ + phy_support_asym_pause(phy); + + /* Display what we found */ + phy_attached_info(phy); + } else if (np && !of_get_child_by_name(np, "mdio")) { + /* Support legacy ASPEED devicetree descriptions that decribe a + * MAC with an embedded MDIO controller but have no "mdio" + * child node. Automatically scan the MDIO bus for available + * PHYs. + */ priv->use_ncsi = false; err = ftgmac100_setup_mdio(netdev); if (err) |