diff options
| author | Bruce Allan <bruce.w.allan@intel.com> | 2013-01-04 09:53:19 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2013-01-27 01:40:38 -0800 |
| commit | 4e03510b4779851db7e9153368d1f856e66ea239 (patch) | |
| tree | ad63dcd41c095ea4af0a50cb19d50b4ad85cc15d /drivers/net | |
| parent | ed1a42656aa794aa3d6edf5ca83f98835701dc41 (diff) | |
| download | linux-4e03510b4779851db7e9153368d1f856e66ea239.tar.bz2 | |
e1000e: fix PHY init workarounds for i217/i218
Toggling the LANPHYPC Value bit cycles the power on the PHY and sets it
back to power-on defaults. This includes setting it's MAC-PHY messaging
mode to use the PCIe-like interconnect, so the MAC must also be set back
from SMBus mode to PCIe mode otherwise the PHY can be inaccessible.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000e/ich8lan.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index e0f41f0b5fe6..3f3477ffd46c 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -426,6 +426,15 @@ static s32 e1000_init_phy_workarounds_pchlan(struct e1000_hw *hw) mac_reg |= E1000_FEXTNVM3_PHY_CFG_COUNTER_50MSEC; ew32(FEXTNVM3, mac_reg); + if (hw->mac.type == e1000_pch_lpt) { + /* Toggling LANPHYPC brings the PHY out of SMBus mode + * So ensure that the MAC is also out of SMBus mode + */ + mac_reg = er32(CTRL_EXT); + mac_reg &= ~E1000_CTRL_EXT_FORCE_SMBUS; + ew32(CTRL_EXT, mac_reg); + } + /* Toggle LANPHYPC Value bit */ mac_reg = er32(CTRL); mac_reg |= E1000_CTRL_LANPHYPC_OVERRIDE; |