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| author | Andy Fleming <afleming@freescale.com> | 2007-07-11 11:42:35 -0500 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-18 18:29:37 -0400 |
| commit | af2d940df2b60b15c271033d381c2f3ead655562 (patch) | |
| tree | 367711410500a4fd7736e2e0ff5036506597857d /drivers/net | |
| parent | cc65185d400c4e8698ff1c1b59f90bd491e9bda5 (diff) | |
| download | linux-3.10-af2d940df2b60b15c271033d381c2f3ead655562.tar.gz linux-3.10-af2d940df2b60b15c271033d381c2f3ead655562.tar.bz2 linux-3.10-af2d940df2b60b15c271033d381c2f3ead655562.zip | |
Fix Vitesse RGMII-ID support
The Vitesse PHY on the 8641D needs to be set up with internal delay to
work in RGMII mode. So we add skew when it is set to RGMII_ID mode.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Haruki Dai <Dai.Haruki@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/vitesse.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/net/phy/vitesse.c b/drivers/net/phy/vitesse.c index f39ab76e6f6..6a538564791 100644 --- a/drivers/net/phy/vitesse.c +++ b/drivers/net/phy/vitesse.c @@ -21,6 +21,10 @@ /* Vitesse Extended Control Register 1 */ #define MII_VSC8244_EXT_CON1 0x17 #define MII_VSC8244_EXTCON1_INIT 0x0000 +#define MII_VSC8244_EXTCON1_TX_SKEW_MASK 0x0c00 +#define MII_VSC8244_EXTCON1_RX_SKEW_MASK 0x0300 +#define MII_VSC8244_EXTCON1_TX_SKEW 0x0800 +#define MII_VSC8244_EXTCON1_RX_SKEW 0x0200 /* Vitesse Interrupt Mask Register */ #define MII_VSC8244_IMASK 0x19 @@ -39,7 +43,7 @@ /* Vitesse Auxiliary Control/Status Register */ #define MII_VSC8244_AUX_CONSTAT 0x1c -#define MII_VSC8244_AUXCONSTAT_INIT 0x0004 +#define MII_VSC8244_AUXCONSTAT_INIT 0x0000 #define MII_VSC8244_AUXCONSTAT_DUPLEX 0x0020 #define MII_VSC8244_AUXCONSTAT_SPEED 0x0018 #define MII_VSC8244_AUXCONSTAT_GBIT 0x0010 @@ -51,6 +55,7 @@ MODULE_LICENSE("GPL"); static int vsc824x_config_init(struct phy_device *phydev) { + int extcon; int err; err = phy_write(phydev, MII_VSC8244_AUX_CONSTAT, @@ -58,8 +63,20 @@ static int vsc824x_config_init(struct phy_device *phydev) if (err < 0) return err; - err = phy_write(phydev, MII_VSC8244_EXT_CON1, - MII_VSC8244_EXTCON1_INIT); + extcon = phy_read(phydev, MII_VSC8244_EXT_CON1); + + if (extcon < 0) + return err; + + extcon &= ~(MII_VSC8244_EXTCON1_TX_SKEW_MASK | + MII_VSC8244_EXTCON1_RX_SKEW_MASK); + + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) + extcon |= (MII_VSC8244_EXTCON1_TX_SKEW | + MII_VSC8244_EXTCON1_RX_SKEW); + + err = phy_write(phydev, MII_VSC8244_EXT_CON1, extcon); + return err; } |