Ah very simple the setup is: GM <-> SC
Where the GM is the i210 and the SC is the IMX6.FEC What i measured was the PPS from SC to GM. Both have a PPS out where i mesured the distance between the edges. And the ouput of the SC from PTP4L. So the SC syncs to the GM there is nothing addtionally in the network. Just Ethernet Cable from GM to SC. Did have them both on zero. Von: Miroslav Lichvar <mlich...@redhat.com> An: Armin HAMAR <armin.ha...@sprecher-automation.com> Kopie: Linuxptp-users@lists.sourceforge.net, Richard Cochran <richardcoch...@gmail.com> Datum: 02.07.2019 10:24 Betreff: Re: Re: [Linuxptp-users] PPS to Linux PTP offset/delay? On Tue, Jul 02, 2019 at 10:15:47AM +0200, Armin HAMAR wrote: > For me it's still a bit unclear why the PPS delay of the two cards is so > low/high compared to the PTP4L output. > Should it then with compensation not be very close together? It's not clear to me what exactly are you measuring. It would help if you could describe your setup in more detail. What is connected to what and how it is synchronized. As a quick test I'd suggest to set ingressLatency and egressLatency on the non-I210 clock to 470. That may fix the delay, but not offset. -- Miroslav Lichvar
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