Frequent link up/down events can happen when a Bel Fuse SFP part is
connected to the amd-xgbe device. Try to avoid the frequent link
issues by resetting the PHY as documented in Bel Fuse SFP datasheets.
Signed-off-by: Venkat Kumar Ande <venkatkumar.a...@amd.com>
---
drivers/net/axgbe/axgbe_phy_impl.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/axgbe/axgbe_phy_impl.c
b/drivers/net/axgbe/axgbe_phy_impl.c
index 968ff1f867..1ccb95334e 100644
--- a/drivers/net/axgbe/axgbe_phy_impl.c
+++ b/drivers/net/axgbe/axgbe_phy_impl.c
@@ -563,6 +563,9 @@ static bool axgbe_phy_belfuse_parse_quirks(struct
axgbe_port *pdata)
/* For Bel-Fuse, use the extra AN flag */
pdata->an_again = 1;
+ /* Reset PHY - wait for self-clearing reset bit to clear */
+ pdata->phy_if.phy_impl.reset(pdata);
+
if (!memcmp(&sfp_eeprom->base[AXGBE_SFP_BASE_VENDOR_PN],
AXGBE_BEL_FUSE_PARTNO, strlen(AXGBE_BEL_FUSE_PARTNO))) {
phy_data->sfp_base = AXGBE_SFP_BASE_1000_SX;
--
2.34.1
