diff options
Diffstat (limited to 'drivers/net/phy/micrel.c')
| -rw-r--r-- | drivers/net/phy/micrel.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 88cc03982bb7..8b8634600c51 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -117,6 +117,10 @@ #define LAN8814_EEE_STATE 0x38 #define LAN8814_EEE_STATE_MASK2P5P BIT(10) +#define LAN8814_PD_CONTROLS 0x9d +#define LAN8814_PD_CONTROLS_PD_MEAS_TIME_MASK GENMASK(3, 0) +#define LAN8814_PD_CONTROLS_PD_MEAS_TIME_VAL 0xb + /* Represents 1ppm adjustment in 2^32 format with * each nsec contains 4 clock cycles. * The value is calculated as following: (1/1000000)/((2^-32)/4) @@ -3304,6 +3308,20 @@ static void lan8814_clear_2psp_bit(struct phy_device *phydev) lanphy_write_page_reg(phydev, 2, LAN8814_EEE_STATE, val); } +static void lan8814_update_meas_time(struct phy_device *phydev) +{ + u16 val; + + /* By setting the measure time to a value of 0xb this will allow cables + * longer than 100m to be used. This configuration can be used + * regardless of the mode of operation of the PHY + */ + val = lanphy_read_page_reg(phydev, 1, LAN8814_PD_CONTROLS); + val &= ~LAN8814_PD_CONTROLS_PD_MEAS_TIME_MASK; + val |= LAN8814_PD_CONTROLS_PD_MEAS_TIME_VAL; + lanphy_write_page_reg(phydev, 1, LAN8814_PD_CONTROLS, val); +} + static int lan8814_probe(struct phy_device *phydev) { const struct kszphy_type *type = phydev->drv->driver_data; @@ -3342,6 +3360,7 @@ static int lan8814_probe(struct phy_device *phydev) /* Errata workarounds */ lan8814_clear_2psp_bit(phydev); + lan8814_update_meas_time(phydev); return 0; } |