On Tue, Aug 18, 2020 at 07:40:24PM +0000, Irene Kravets wrote: > I am using vendor kernel and a vendor-specific PTP driver > (drivers/net/Ethernet/freescale/fec_ptp.c). I see this driver in > the mainline kernel as well. What enables PPS output signal is the > PTP_ENABLE_PPS ioctl sent from linuxptp stack (in phc2sys.c).
So that signal is the result of code running in an interrupt service routine. The microsecond delay and jitter you see are typical for ISR implementation. Sorry, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
