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stmmac: intel: Enable correction of MAC propagation delay 

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 26cfb838aa ("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>
pull/806/head
Kurt Kanzenbach 2023-08-18 13:14:01 +02:00 committed by David S. Miller
parent 4025d3e73a
commit 58f2ffdedf
1 changed files with 1 additions and 0 deletions
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1
drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
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@ -627,6 +627,7 @@ static int ehl_common_data(struct pci_dev *pdev,
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;