diff options
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/vitesse.c | 43 |
1 files changed, 24 insertions, 19 deletions
diff --git a/drivers/net/phy/vitesse.c b/drivers/net/phy/vitesse.c index 2635b82..a077b98 100644 --- a/drivers/net/phy/vitesse.c +++ b/drivers/net/phy/vitesse.c @@ -30,9 +30,8 @@ #define MIIM_CIS8204_SLEDCON_INIT 0x1115 /* Vitesse VSC8601 Extended PHY Control Register 1 */ -#define MIIM_VSC8601_EPHY_CON 0x17 -#define MIIM_VSC8601_EPHY_CON_INIT_SKEW 0x1120 -#define MIIM_VSC8601_SKEW_CTRL 0x1c +#define MII_VSC8601_EPHY_CTL 0x17 +#define MII_VSC8601_EPHY_CTL_RGMII_SKEW (1 << 8) #define PHY_EXT_PAGE_ACCESS 0x1f #define PHY_EXT_PAGE_ACCESS_GENERAL 0x10 @@ -142,26 +141,32 @@ static int cis8204_config(struct phy_device *phydev) } /* Vitesse VSC8601 */ +/* This adds a skew for both TX and RX clocks, so the skew should only be + * applied to "rgmii-id" interfaces. It may not work as expected + * on "rgmii-txid", "rgmii-rxid" or "rgmii" interfaces. */ +static int vsc8601_add_skew(struct phy_device *phydev) +{ + int ret; + + ret = phy_read(phydev, MDIO_DEVAD_NONE, MII_VSC8601_EPHY_CTL); + if (ret < 0) + return ret; + + ret |= MII_VSC8601_EPHY_CTL_RGMII_SKEW; + return phy_write(phydev, MDIO_DEVAD_NONE, MII_VSC8601_EPHY_CTL, ret); +} + static int vsc8601_config(struct phy_device *phydev) { - /* Configure some basic stuff */ -#ifdef CONFIG_SYS_VSC8601_SKEWFIX - phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8601_EPHY_CON, - MIIM_VSC8601_EPHY_CON_INIT_SKEW); -#if defined(CONFIG_SYS_VSC8601_SKEW_TX) && defined(CONFIG_SYS_VSC8601_SKEW_RX) - phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS, 1); -#define VSC8101_SKEW \ - ((CONFIG_SYS_VSC8601_SKEW_TX << 14) \ - | (CONFIG_SYS_VSC8601_SKEW_RX << 12)) - phy_write(phydev, MDIO_DEVAD_NONE, MIIM_VSC8601_SKEW_CTRL, - VSC8101_SKEW); - phy_write(phydev, MDIO_DEVAD_NONE, PHY_EXT_PAGE_ACCESS, 0); -#endif -#endif + int ret = 0; - genphy_config_aneg(phydev); + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + ret = vsc8601_add_skew(phydev); - return 0; + if (ret < 0) + return ret; + + return genphy_config_aneg(phydev); } static int vsc8574_config(struct phy_device *phydev) |