From a969b663c866129ed9eb217785a6574fbe826f1d Mon Sep 17 00:00:00 2001 From: Daniel Golle Date: Thu, 6 Apr 2023 23:36:50 +0100 Subject: [PATCH] net: phy: mxl-gpy: don't use SGMII AN if using phylink MAC drivers using phylink expect SGMII in-band-status to be switched off when attached to a PHY. Make sure this is the case also for mxl-gpy which keeps SGMII in-band-status in case of SGMII interface mode is used. Signed-off-by: Daniel Golle --- drivers/net/phy/mxl-gpy.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) --- a/drivers/net/phy/mxl-gpy.c +++ b/drivers/net/phy/mxl-gpy.c @@ -195,8 +195,11 @@ static bool gpy_2500basex_chk(struct phy phydev->speed = SPEED_2500; phydev->interface = PHY_INTERFACE_MODE_2500BASEX; - phy_modify_mmd(phydev, MDIO_MMD_VEND1, VSPEC1_SGMII_CTRL, - VSPEC1_SGMII_CTRL_ANEN, 0); + + if (!phydev->phylink) + phy_modify_mmd(phydev, MDIO_MMD_VEND1, VSPEC1_SGMII_CTRL, + VSPEC1_SGMII_CTRL_ANEN, 0); + return true; } @@ -220,6 +223,14 @@ static int gpy_config_aneg(struct phy_de u32 adv; int ret; + /* Disable SGMII auto-negotiation if using phylink */ + if (phydev->phylink) { + ret = phy_modify_mmd(phydev, MDIO_MMD_VEND1, VSPEC1_SGMII_CTRL, + VSPEC1_SGMII_CTRL_ANEN, 0); + if (ret < 0) + return ret; + } + if (phydev->autoneg == AUTONEG_DISABLE) { /* Configure half duplex with genphy_setup_forced, * because genphy_c45_pma_setup_forced does not support. @@ -310,6 +321,8 @@ static void gpy_update_interface(struct switch (phydev->speed) { case SPEED_2500: phydev->interface = PHY_INTERFACE_MODE_2500BASEX; + if (phydev->phylink) + break; ret = phy_modify_mmd(phydev, MDIO_MMD_VEND1, VSPEC1_SGMII_CTRL, VSPEC1_SGMII_CTRL_ANEN, 0); if (ret < 0) @@ -321,7 +334,7 @@ static void gpy_update_interface(struct case SPEED_100: case SPEED_10: phydev->interface = PHY_INTERFACE_MODE_SGMII; - if (gpy_sgmii_aneg_en(phydev)) + if (phydev->phylink || gpy_sgmii_aneg_en(phydev)) break; /* Enable and restart SGMII ANEG for 10/100/1000Mbps link speed * if ANEG is disabled (in 2500-BaseX mode).