The FPC can read incorrect TOD (time of the day) values from zarlink.
The following logs shows incorrect data received from zarlink:
Oct 09 20:24:21 router-fpc0 timingd-lc[14522]: timingd_scapa_start_phy_ts_1pps_timer - Tod Counter: secs: 1696875898, nsecs : 201678670 interval: 998321 millisecs Oct 09 20:24:21 router-fpc0 timingd-lc[14522]: scapa_get_master_time_stamp - Read Tod Counters : secs: 1694516602, nsecs : 224329645
As can be seen from the logs above within one second TOD values in seconds is completely different.
The issue fixed. The fixed releases can be checked by contacting JTAC.