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net/phy: fix select line for TN80xx

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TN80xx has same PHY ID as TN2020, but it needs different setting to register
30.93 which used to select line, so we read register 30.32 which has
bit 15:12 to indicate PHY hardware version, for TN20xx we will get 3 or 2,
for TN80xx we will get 5 or 4.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Shaohui Xie 2013-03-25 07:39:59 +00:00 committed by Andy Fleming
parent c416faf84f
commit d54097b6c1
1 changed files with 14 additions and 2 deletions
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16
drivers/net/phy/teranetics.c
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@ -34,9 +34,21 @@ int tn2020_config(struct phy_device *phydev)
unsigned short restart_an = (MDIO_AN_CTRL1_RESTART |
MDIO_AN_CTRL1_ENABLE |
MDIO_AN_CTRL1_XNP);
u8 phy_hwversion;
phy_write(phydev, 30, 93, 2);
phy_write(phydev, MDIO_MMD_AN, MDIO_CTRL1, restart_an);
/*
* bit 15:12 of register 30.32 indicates PHY hardware
* version. It can be used to distinguish TN80xx from
* TN2020. TN2020 needs write 0x2 to 30.93, but TN80xx
* needs 0x1.
*/
phy_hwversion = (phy_read(phydev, 30, 32) >> 12) & 0xf;
if (phy_hwversion <= 3) {
phy_write(phydev, 30, 93, 2);
phy_write(phydev, MDIO_MMD_AN, MDIO_CTRL1, restart_an);
} else {
phy_write(phydev, 30, 93, 1);
}
}
return 0;