Commit Graph

6 Commits (a92f42de389a10477dbec8ddbf239b5939c241ec)

Author SHA1 Message Date
Miroslav Lichvar 3012cf0540 Add option to set maximum frequency adjustment.
The option sets an additional limit to the hardware limit. It's disabled
if set to zero. The default is 900000000 ppb.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
2013-04-11 19:44:07 +02:00
Jacob Keller b8160f2760 ptp4l: add maximum offset to pi servo
this patch modifies the pi servo to add a configurable max offset (default
infinity). When ever the detected offset is larger than this value, the clock
will jump and reset the servo state. The value of this feature is for decreasing
time to stabalize when clock is off by a large ammount during late running. This
can occur when the upstream master changes, or when the clock is reset due to
outside forces. The method used to reset clock is simply to reset the pi servo
to the unlocked state.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
2012-09-29 06:24:44 +02:00
Richard Cochran 8f00d29265 Discover and utilize the initial clock frequency adjustment.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
2012-09-22 11:30:50 +02:00
Richard Cochran e1f77422ec Move shared PI global variable into the proper module.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
2012-08-26 14:39:57 +02:00
Richard Cochran 87e61f9770 Let the clock servo know about the expected time stamp quality.
If software time stamping is to be used, then the servo will want to
have appropriate filtering.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
2011-12-13 04:57:28 +01:00
Richard Cochran 5c010351c0 Add a modular clock servo interface with a PI controller.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
2011-11-12 12:31:18 +01:00