diff options
Diffstat (limited to 'drivers/net/dsa/mv88e6xxx/hwtstamp.c')
| -rw-r--r-- | drivers/net/dsa/mv88e6xxx/hwtstamp.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/dsa/mv88e6xxx/hwtstamp.c b/drivers/net/dsa/mv88e6xxx/hwtstamp.c index 1b8f79b2c939..b251d534b70d 100644 --- a/drivers/net/dsa/mv88e6xxx/hwtstamp.c +++ b/drivers/net/dsa/mv88e6xxx/hwtstamp.c @@ -563,6 +563,19 @@ int mv88e6xxx_hwtstamp_setup(struct mv88e6xxx_chip *chip) if (err) return err; + /* 88E6341 devices default to timestamping at the PHY, but this has + * a hardware issue that results in unreliable timestamps. Force + * these devices to timestamp at the MAC. + */ + if (chip->info->family == MV88E6XXX_FAMILY_6341) { + u16 val = MV88E6341_PTP_CFG_UPDATE | + MV88E6341_PTP_CFG_MODE_IDX | + MV88E6341_PTP_CFG_MODE_TS_AT_MAC; + err = mv88e6xxx_ptp_write(chip, MV88E6341_PTP_CFG, val); + if (err) + return err; + } + return 0; } |