All captured timestamps should be corrected by PHY, MAC and CDC introduced
latency/errors. The CDC correction is already used. Enable MAC propagation delay
correction as well which is available since commit
26cfb838aa00 ("net: stmmac:
correct MAC propagation delay").
Before:
|ptp4l[390.458]: rms 7 max 21 freq +177 +/- 14 delay 357 +/- 1
After:
|ptp4l[620.012]: rms 7 max 20 freq +195 +/- 14 delay 345 +/- 1
Tested on Intel Elkhart Lake.
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Johannes Zink <j.zink@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
plat->rx_queues_to_use = 8;
plat->tx_queues_to_use = 8;
plat->flags |= STMMAC_FLAG_USE_PHY_WOL;
+ plat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY;
plat->safety_feat_cfg->tsoee = 1;
plat->safety_feat_cfg->mrxpee = 1;