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....@freescale.com>
---
drivers/net/phy/teranetics.c | 15 +++++++++++++--
1 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/net/phy/teranetics.c b/drivers/net/phy/teranetics.c
index 78447b7..c0f13b8 100644
--- a/drivers/net/phy/teranetics.c
+++ b/drivers/net/phy/teranetics.c
@@ -34,9 +34,20 @@ 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;
--
1.6.4
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