Hi,
I'm currently working on a network product using gPTP configuration for
PTP sync. The device shall be a AVB endpoint handling audio and
according to Avnu specifications all endpoint shall be capable of being
master on the network. Some plugins for AVB (such as gstreamer and
alsa-plugins) require that system time (CLOCK_REALTIME) is in sync with
PHC to get correct timing. I see different cases depending on if the
device is master or slave. If the device is slave I would like to sync
PHC to CLOCK_REALTIME. The other way around, if device is master I would
like to sync CLOCK_REALTIME to PHC.
To the question; is there a way to use phc2sys and handle this
automatically?
What I currently do manually is (linuxptp version 3.1):
$ ptp4l -i eth1 -f /etc/linuxptp/gPTP.cfg
On the device becoming master:
$ phc2sys -c eth1 -s CLOCK_REALTIME --step_threshold=1
--transportSpecific=1 -w
On the device becoming slave:
$ phc2sys -c CLOCK_REALTIME -s eth1 --step_threshold=1
--transportSpecific=1 -w
It would be good if the above could be dynamic. Starting everything as
services and let the system sync itself.
/Peter
_______________________________________________
Linuxptp-users mailing list
Linuxptp-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linuxptp-users
