diff options
| author | Chris J Arges <christopherarges@gmail.com> | 2016-11-02 15:13:42 +0100 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2017-01-06 11:18:50 +0100 |
| commit | 4e684f59d760a2c7c716bb60190783546e2d08a1 (patch) | |
| tree | 62574dc4065a1f7c63fb6d01ad5b0547ab0a1e96 | |
| parent | igb: correct register comments (diff) | |
| download | linux-4e684f59d760a2c7c716bb60190783546e2d08a1.tar.xz linux-4e684f59d760a2c7c716bb60190783546e2d08a1.zip | |
igb: Workaround for igb i210 firmware issue
Sometimes firmware may not properly initialize I347AT4_PAGE_SELECT causing
the probe of an igb i210 NIC to fail. This patch adds an addition zeroing
of this register during igb_get_phy_id to workaround this issue.
Thanks for Jochen Henneberg for the idea and original patch.
Signed-off-by: Chris J Arges <christopherarges@gmail.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/igb/e1000_phy.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_phy.c b/drivers/net/ethernet/intel/igb/e1000_phy.c index 5b54254aed4f..569ee25642b4 100644 --- a/drivers/net/ethernet/intel/igb/e1000_phy.c +++ b/drivers/net/ethernet/intel/igb/e1000_phy.c @@ -77,6 +77,10 @@ s32 igb_get_phy_id(struct e1000_hw *hw) s32 ret_val = 0; u16 phy_id; + /* ensure PHY page selection to fix misconfigured i210 */ + if (hw->mac.type == e1000_i210) + phy->ops.write_reg(hw, I347AT4_PAGE_SELECT, 0); + ret_val = phy->ops.read_reg(hw, PHY_ID1, &phy_id); if (ret_val) goto out; |