On Tue, Jun 28, 2022 at 03:21:02PM +0200, Martin Pecka wrote: > - according to one user, for P2P to work over this switch, it might be > required to connect a host CPU to the MII port. I don't quite understand why > it should be a different port that would be creating the PDelay messages on > regard of the downstream ports, but that would quite plausibly explain the > behavior of the switch (but would not explain why the datasheet tells it can > act as P2P TC, if it actually needs a linux computer next to it to gain this > functionality).
Most (all?) TCs need a micro-processor or micro-controller to handle the PTP. PTP is just too complicated to do in hardware. The peer messages must be generated per-port, and some program need to do that. When used with DSA switches, ptp4l can do this work. Thanks, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
