PCS initialization sequence for 2.5G SGMII interface governs auto negotiation to be in disabled mode
Signed-off-by: Bhaskar Upadhaya Bhaskar.Upadhaya@nxp.com --- Depends on https://patchwork.ozlabs.org/cover/823205
drivers/net/pfe_eth/pfe_eth.c | 3 +++ include/pfe_eth/pfe/cbus/emac.h | 1 + 2 files changed, 4 insertions(+)
diff --git a/drivers/net/pfe_eth/pfe_eth.c b/drivers/net/pfe_eth/pfe_eth.c index 4db823f..01b745b 100644 --- a/drivers/net/pfe_eth/pfe_eth.c +++ b/drivers/net/pfe_eth/pfe_eth.c @@ -426,6 +426,9 @@ static void ls1012a_configure_serdes(struct ls1012a_eth_dev *priv) value = PHY_SGMII_CR_DEF_VAL; if (!sgmii_2500) value |= PHY_SGMII_CR_RESET_AN; + /* Disable Auto neg for 2.5G SGMII as it doesn't support auto neg*/ + if (sgmii_2500) + value &= ~PHY_SGMII_ENABLE_AN; ls1012a_phy_write(&bus, 0, MDIO_DEVAD_NONE, 0, value); }
diff --git a/include/pfe_eth/pfe/cbus/emac.h b/include/pfe_eth/pfe/cbus/emac.h index 3cfcd99..b61f3ad 100644 --- a/include/pfe_eth/pfe/cbus/emac.h +++ b/include/pfe_eth/pfe/cbus/emac.h @@ -146,5 +146,6 @@ enum mac_speed {SPEED_10M, SPEED_100M, SPEED_1000M, SPEED_1000M_PCS}; #define PHY_SGMII_IF_MODE_AN 0x0002 #define PHY_SGMII_IF_MODE_SGMII 0x0001 #define PHY_SGMII_IF_MODE_SGMII_GBT 0x0008 +#define PHY_SGMII_ENABLE_AN 0x1000
#endif /* _EMAC_H_ */