diff options
| author | Mark Brown <broonie@kernel.org> | 2023-03-13 16:21:01 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-03-13 16:21:01 +0300 |
| commit | c938bb0cf644a61cc6222cc6d0f106bb5c4b4ff5 (patch) | |
| tree | 22e62a91a4674df9043d298994a27acc11830044 /drivers/net/phy/microchip.c | |
| parent | 7d4ae72edba715d8e2dbfb3851879d354d13a7b9 (diff) | |
| parent | eeac8ede17557680855031c6f305ece2378af326 (diff) | |
| download | linux-c938bb0cf644a61cc6222cc6d0f106bb5c4b4ff5.tar.xz | |
Merge tag 'v6.3-rc2' into spi-6.4 to fix clock related boot issues
Linux 6.3-rc2
Diffstat (limited to 'drivers/net/phy/microchip.c')
| -rw-r--r-- | drivers/net/phy/microchip.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/net/phy/microchip.c b/drivers/net/phy/microchip.c index ccecee2524ce..0b88635f4fbc 100644 --- a/drivers/net/phy/microchip.c +++ b/drivers/net/phy/microchip.c @@ -342,6 +342,37 @@ static int lan88xx_config_aneg(struct phy_device *phydev) return genphy_config_aneg(phydev); } +static void lan88xx_link_change_notify(struct phy_device *phydev) +{ + int temp; + + /* At forced 100 F/H mode, chip may fail to set mode correctly + * when cable is switched between long(~50+m) and short one. + * As workaround, set to 10 before setting to 100 + * at forced 100 F/H mode. + */ + if (!phydev->autoneg && phydev->speed == 100) { + /* disable phy interrupt */ + temp = phy_read(phydev, LAN88XX_INT_MASK); + temp &= ~LAN88XX_INT_MASK_MDINTPIN_EN_; + phy_write(phydev, LAN88XX_INT_MASK, temp); + + temp = phy_read(phydev, MII_BMCR); + temp &= ~(BMCR_SPEED100 | BMCR_SPEED1000); + phy_write(phydev, MII_BMCR, temp); /* set to 10 first */ + temp |= BMCR_SPEED100; + phy_write(phydev, MII_BMCR, temp); /* set to 100 later */ + + /* clear pending interrupt generated while workaround */ + temp = phy_read(phydev, LAN88XX_INT_STS); + + /* enable phy interrupt back */ + temp = phy_read(phydev, LAN88XX_INT_MASK); + temp |= LAN88XX_INT_MASK_MDINTPIN_EN_; + phy_write(phydev, LAN88XX_INT_MASK, temp); + } +} + static struct phy_driver microchip_phy_driver[] = { { .phy_id = 0x0007c132, @@ -359,6 +390,7 @@ static struct phy_driver microchip_phy_driver[] = { .config_init = lan88xx_config_init, .config_aneg = lan88xx_config_aneg, + .link_change_notify = lan88xx_link_change_notify, .config_intr = lan88xx_phy_config_intr, .handle_interrupt = lan88xx_handle_interrupt, |