tg3: Fix 57780 asic rev PCIe link receiver errors

This patch fixes some PCIe link receiver errors by decreasing the internal
electrical idle timeout.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 46a3f86125be..e8def28877ce 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -6719,6 +6719,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy)
                 val |= PCIE_PWR_MGMT_EXT_ASPM_TMR_EN |
                        PCIE_PWR_MGMT_L1_THRESH_4MS;
                 tw32(PCIE_PWR_MGMT_THRESH, val);
+
+                val = tr32(TG3_PCIE_EIDLE_DELAY) & ~TG3_PCIE_EIDLE_DELAY_MASK;
+                tw32(TG3_PCIE_EIDLE_DELAY, val | TG3_PCIE_EIDLE_DELAY_13_CLKS);
+
+                tw32(TG3_CORR_ERR_STAT, TG3_CORR_ERR_STAT_CLEAR);
         }
 
         /* This works around an issue with Athlon chipsets on