[PATCH v2 12/12] net/txgbe: fix KR auto-negotiation
Jiawen Wu
jiawenwu at trustnetic.com
Wed Feb 9 11:42:13 CET 2022
Fix failure to enter auto-negotiation mode on some firmware versions for
KR NICs.
Fixes: f611dada1af8 ("net/txgbe: update link setup process of backplane NICs")
Cc: stable at dpdk.org
Signed-off-by: Jiawen Wu <jiawenwu at trustnetic.com>
---
drivers/net/txgbe/base/txgbe_phy.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/txgbe/base/txgbe_phy.c b/drivers/net/txgbe/base/txgbe_phy.c
index 3f5229ecc2..3fb929f37a 100644
--- a/drivers/net/txgbe/base/txgbe_phy.c
+++ b/drivers/net/txgbe/base/txgbe_phy.c
@@ -1455,6 +1455,10 @@ txgbe_set_link_to_kr(struct txgbe_hw *hw, bool autoneg)
if (!(hw->devarg.auto_neg == 1)) {
wr32_epcs(hw, SR_AN_CTRL, 0);
wr32_epcs(hw, VR_AN_KR_MODE_CL, 0);
+ } else {
+ value = rd32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1);
+ value &= ~(1 << 6);
+ wr32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1, value);
}
if (hw->devarg.present == 1) {
value = rd32_epcs(hw, TXGBE_PHY_TX_EQ_CTL1);
--
2.21.0.windows.1
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