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Fix Vitesse RGMII-ID support

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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>
This commit is contained in:
Andy Fleming 2007-07-11 11:42:35 -05:00 committed by Jeff Garzik
parent cc65185d40
commit af2d940df2
1 changed files with 20 additions and 3 deletions
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23
drivers/net/phy/vitesse.c
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@ -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;
}