net: stmmac: dwmac-imx: enable MAC propagation delay correction for i.MX8MP

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As the i.MX8MP supports reading MAC propagation delay and correcting the
Hardware timestamp counter for additional delays [1], enable the feature
for this SoC.

This reduces phase error of the PPS output from the PTP Hardware Clock
from approx 150ns to 100ns.

[1] i.MX8MP Reference Manual, rev.1 Section 11.7.2.5.3 "Timestamp
correction"

Signed-off-by: Johannes Zink <j.zink@pengutronix.de>
Link: https://lore.kernel.org/r/20230719-stmmac_correct_mac_delay-v3-2-61e63427735e@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Johannes Zink 2023-08-01 17:44:30 +02:00 • committed by Jakub Kicinski

parent 26cfb838aa

commit 6cb2e613c7

1 changed files with 5 additions and 0 deletions

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drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c

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