net: mscc: ocelot: support 4 PTP programmable pins

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Support 4 PTP programmable pins with only PTP_PF_PEROUT function
for now. The PTP_PF_EXTTS function will be supported in the
future, and it should be implemented separately for Felix and
Ocelot, because of different hardware interrupt implementation
in them.

Since the hardware is not able to support absolute start time,
the periodic clock request only allows start time 0 0. But nsec
could be accepted for PPS case for phase adjustment.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Yangbo Lu 2020-04-20 10:46:49 +08:00 • committed by David S. Miller

parent 94aca08244

commit cc2d87bb83

3 changed files with 128 additions and 0 deletions

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121

drivers/net/ethernet/mscc/ocelot_ptp.c

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