Commit 8cbcdc1a authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

net: phy: marvell: Errata for mv88e6390 internal PHYs

The VOD can be out of spec, unless some magic value is poked into an
undocumented register in an undocumented page.

Fixes: e4cf8a38

 ("net: phy: Marvell: Add mv88e6390 internal PHY")
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent f275ee0f
......@@ -1046,6 +1046,39 @@ static int m88e1145_config_init(struct phy_device *phydev)
return 0;
}
/* The VOD can be out of specification on link up. Poke an
* undocumented register, in an undocumented page, with a magic value
* to fix this.
*/
static int m88e6390_errata(struct phy_device *phydev)
{
int err;
err = phy_write(phydev, MII_BMCR,
BMCR_ANENABLE | BMCR_SPEED1000 | BMCR_FULLDPLX);
if (err)
return err;
usleep_range(300, 400);
err = phy_write_paged(phydev, 0xf8, 0x08, 0x36);
if (err)
return err;
return genphy_soft_reset(phydev);
}
static int m88e6390_config_aneg(struct phy_device *phydev)
{
int err;
err = m88e6390_errata(phydev);
if (err)
return err;
return m88e1510_config_aneg(phydev);
}
/**
* fiber_lpa_mod_linkmode_lpa_t
* @advertising: the linkmode advertisement settings
......@@ -2283,7 +2316,7 @@ static struct phy_driver marvell_drivers[] = {
.features = PHY_GBIT_FEATURES,
.probe = m88e6390_probe,
.config_init = &marvell_config_init,
.config_aneg = &m88e1510_config_aneg,
.config_aneg = &m88e6390_config_aneg,
.read_status = &marvell_read_status,
.ack_interrupt = &marvell_ack_interrupt,
.config_intr = &marvell_config_intr,
......
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