diff options
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_ptp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index e26320ce52ca..a99e0fbd0b8b 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -1783,6 +1783,7 @@ static int ice_ptp_write_perout(struct ice_hw *hw, unsigned int chan, 8 + chan + (tmr_idx * 4)); wr32(hw, GLGEN_GPIO_CTL(gpio_pin), val); + ice_flush(hw); return 0; } @@ -1843,9 +1844,10 @@ static int ice_ptp_cfg_perout(struct ice_pf *pf, struct ptp_perout_request *rq, div64_u64_rem(start, period, &phase); /* If we have only phase or start time is in the past, start the timer - * at the next multiple of period, maintaining phase. + * at the next multiple of period, maintaining phase at least 0.5 second + * from now, so we have time to write it to HW. */ - clk = ice_ptp_read_src_clk_reg(pf, NULL); + clk = ice_ptp_read_src_clk_reg(pf, NULL) + NSEC_PER_MSEC * 500; if (rq->flags & PTP_PEROUT_PHASE || start <= clk - prop_delay_ns) start = div64_u64(clk + period - 1, period) * period + phase; |