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