Commit Graph

107 Commits (a71ecc2816fcba48b7845b103b8f19b407f8eed3)

Author SHA1 Message Date
Miroslav Lichvar d42914c335 Improve stability of PHC reading in phc2sys.
Make five PHC readings in sequence and pick the quickest one.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
2012-08-30 14:48:32 +02:00
Miroslav Lichvar 2fcf5cbb4f Add non-PPS mode to phc2sys.
As some PHC hardware/drivers don't provide PPS, it may be useful to keep the
system clock synchronized to PHC via clock_gettime(). While the precision
of the clock is only in microsecond range, the error seems to be quite stable.

The -d parameter now can be omitted if -s is provided.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
2012-08-30 14:47:01 +02:00
Richard Cochran be87b05f52 Revert "Add non-PPS mode to phc2sys."
This reverts commit 998093b6f7.
Will apply this patch again, with the correct author info.
2012-08-30 14:45:50 +02:00
Richard Cochran 0a5caa8476 Revert "Improve stability of PHC reading in phc2sys."
This reverts commit f08d264e1d.
Will apply this patch again, with the correct author info.
2012-08-30 14:44:46 +02:00
Richard Cochran f08d264e1d Improve stability of PHC reading in phc2sys.
Make five PHC readings in sequence and pick the quickest one.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
2012-08-29 15:29:56 +02:00
Richard Cochran 998093b6f7 Add non-PPS mode to phc2sys.
As some PHC hardware/drivers don't provide PPS, it may be useful to keep the
system clock synchronized to PHC via clock_gettime(). While the precision
of the clock is only in microsecond range, the error seems to be quite stable.

The -d parameter now can be omitted if -s is provided.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
2012-08-29 15:29:43 +02:00
Richard Cochran af3cbb5fbd Add a tool to synchronize the system time from a PTP hardware clock.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
2012-01-24 19:12:57 +01:00