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net: phy: Add SGMII support for Marvell 88E1510/1512/1514/1518 

Add code to select SGMII-to-copper mode upon SGMII interface selection.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Roese 2016-02-18 10:59:07 +01:00 committed by David S. Miller
parent 096f6262c5
commit 930b37ee8d
1 changed files with 41 additions and 0 deletions
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41
drivers/net/phy/marvell.c
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@ -133,6 +133,11 @@
#define MII_88E3016_DISABLE_SCRAMBLER 0x0200
#define MII_88E3016_AUTO_MDIX_CROSSOVER 0x0030
#define MII_88E1510_GEN_CTRL_REG_1 0x14
#define MII_88E1510_GEN_CTRL_REG_1_MODE_MASK 0x7
#define MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII 0x1 /* SGMII to copper */
#define MII_88E1510_GEN_CTRL_REG_1_RESET 0x8000 /* Soft reset */
MODULE_DESCRIPTION("Marvell PHY driver");
MODULE_AUTHOR("Andy Fleming");
MODULE_LICENSE("GPL");
@ -438,6 +443,41 @@ static int m88e1318_config_aneg(struct phy_device *phydev)
return m88e1121_config_aneg(phydev);
}
static int m88e1510_config_init(struct phy_device *phydev)
{
int err;
int temp;
/* SGMII-to-Copper mode initialization */
if (phydev->interface == PHY_INTERFACE_MODE_SGMII) {
/* Select page 18 */
err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 18);
if (err < 0)
return err;
/* In reg 20, write MODE[2:0] = 0x1 (SGMII to Copper) */
temp = phy_read(phydev, MII_88E1510_GEN_CTRL_REG_1);
temp &= ~MII_88E1510_GEN_CTRL_REG_1_MODE_MASK;
temp |= MII_88E1510_GEN_CTRL_REG_1_MODE_SGMII;
err = phy_write(phydev, MII_88E1510_GEN_CTRL_REG_1, temp);
if (err < 0)
return err;
/* PHY reset is necessary after changing MODE[2:0] */
temp |= MII_88E1510_GEN_CTRL_REG_1_RESET;
err = phy_write(phydev, MII_88E1510_GEN_CTRL_REG_1, temp);
if (err < 0)
return err;
/* Reset page selection */
err = phy_write(phydev, MII_MARVELL_PHY_PAGE, 0);
if (err < 0)
return err;
}
return 0;
}
static int m88e1510_config_aneg(struct phy_device *phydev)
{
int err;
@ -1259,6 +1299,7 @@ static struct phy_driver marvell_drivers[] = {
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.probe = marvell_probe,
.config_init = &m88e1510_config_init,
.config_aneg = &m88e1510_config_aneg,
.read_status = &marvell_read_status,
.ack_interrupt = &marvell_ack_interrupt,