Commit a0077a9f authored Jul 11, 2014 by Stefan Sørensen Committed by David S. Miller Jul 11, 2014

dp83640: Adjust ptp event timestamps



  Event timestamp values should be adjusted by 3*reference clock period +
  11 ns = 35 ns to compensate for input path and synchronization delays.

So subtract 35ns from event timestamps.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 5e6438db

drivers/net/phy/dp83640.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -755,6 +755,9 @@ static int decode_evnt(struct dp83640_private *dp83640,
		event.type = PTP_CLOCK_EXTTS;
		event.timestamp = phy2txts(&dp83640->edata);

		/* Compensate for input path and synchronization delays */
		event.timestamp -= 35;

		for (i = 0; i < N_EXT_TS; i++) {
		if (ext_status & exts_chan_to_edata(i)) {
		event.index = i;