diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-03 09:33:30 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-03 09:33:30 +0200 |
| commit | cd8fe5b6dbb3a487bea5f1601437c013a3d56163 (patch) | |
| tree | ba029308f2a2a1d8d4880b0bf84d4972bb501715 /drivers/net/phy/microchip.c | |
| parent | 43ba3d4af7a73ae958207caada6af0612d67f08e (diff) | |
| parent | 7e364e56293bb98cae1b55fd835f5991c4e96e7d (diff) | |
Merge 6.3-rc5 into driver-core-next
We need the fixes in here for testing, as well as the driver core
changes for documentation updates to build on.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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, |