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tg3: Add reliable serdes detection for 5717 A0

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The serdes status bit does not work as intended for the 5717 A0.
This patch implements an alternative detection scheme that will only be
valid for A0 revisions.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson
2010-01-12 10:11:38 +00:00
committed by David S. Miller
parent 86cfe4ff02
commit d1ec96af77
2 changed files with 9 additions and 2 deletions
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9
drivers/net/tg3.c
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@@ -1037,7 +1037,11 @@ static void tg3_mdio_start(struct tg3 *tp)
else
tp->phy_addr = 1;
is_serdes = tr32(SG_DIG_STATUS) & SG_DIG_IS_SERDES;
if (tp->pci_chip_rev_id != CHIPREV_ID_5717_A0)
is_serdes = tr32(SG_DIG_STATUS) & SG_DIG_IS_SERDES;
else
is_serdes = tr32(TG3_CPMU_PHY_STRAP) &
TG3_CPMU_PHY_STRAP_IS_SERDES;
if (is_serdes)
tp->phy_addr += 7;
} else
@@ -12123,7 +12127,8 @@ static void __devinit tg3_get_eeprom_hw_cfg(struct tg3 *tp)
tp->phy_id = eeprom_phy_id;
if (eeprom_phy_serdes) {
if (tp->tg3_flags2 & TG3_FLG2_5780_CLASS)
if ((tp->tg3_flags2 & TG3_FLG2_5780_CLASS) ||
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717)
tp->tg3_flags2 |= TG3_FLG2_MII_SERDES;
else
tp->tg3_flags2 |= TG3_FLG2_PHY_SERDES;