Dear Chris , We dont use external PPS, instead trying to get the local system clock's timestamp.
*Setup:* master <--> eth0 (Device 1 -device acts as boundary clock) eth1 <---> etho(Device 2-slave) In this setup, eth0 is receiving timestamp from the master and updating local system clock on Device 1. Now updated local system will be updated on eth1 interface to sync Device 2 clock. ptp4l can use eth0 as T-OC and eth1 as T-BC Can you please help, how to achieve this? Regards, Hari On Tue, 30 Aug 2022 at 19:39, Chris Caudle <6807.ch...@pop.powweb.com> wrote: > On Tue, August 30, 2022 7:13 am, > linuxptp-users-requ...@lists.sourceforge.net wrote: > > Date: Tue, 30 Aug 2022 16:21:36 +0530 > > From: Hari Kumar <hkumar2...@gmail.com> > > Subject: [Linuxptp-users] ts2phc error (ts2phc[20737.341]: > > PTP_EXTTS_REQUEST failed: Invalid argument > > Message-ID: > > <CAMRjPWCtBQcFzQaG-bnThUEu2+2Lnog-aEWr7eUhEOS= > nj2...@mail.gmail.com> > > ... > > [eth0] > > ts2phc.channel 0 > > ts2phc.extts_polarity both > ... > > ts2phc[20737.341]: PTP_EXTTS_REQUEST failed: Invalid argument > > You only mentioned synchronization using PTP, but the ts2phc man page > indicates that extts is for time stamping an external PPS signal: > > "ts2phc.extts_polarity > "The polarity of the external PPS signal, either "rising" or > "falling". Some PHC devices always time stamp both edges. Setting > this option to "both" will allow the ts2phc program to work with such > devices by detecting and ignoring the unwanted edge. In this case be > sure to set 'ts2phc.pulsewidth' to the correct value. The default is > `rising'." > > If you do not have an external PPS signal that does not seem to be the > correct configuration argument to use. I don't know how external PPS > input would make sense with a PTP follower. Maybe used when acting as the > PTP leader, but ignored when acting as a PTP follower, but I'm not sure. > > -- > Chris Caudle > > > > > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users >
_______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
