Yeah, I think a bug in the driver is possible, Xilinx reports proper ptp operation: https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841740/Macb+Driver#MacbDriver-PTP
I'm using a RT patched 4.18 kernel, so now I'm in the process of testing some other kernels. One other piece of information, I did pull the latest git version of linuxptp, with the same results: https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841740/Macb+Driver#MacbDriver-PTP thanks, Paul On Wed, Feb 27, 2019 at 10:25 AM Tino Mettler <tino+deb...@tikei.de> wrote: > > On Tue, Feb 26, 2019 at 18:35:58 -0500, Paul Thomas wrote: > > OK, I think something more with the networking is going on. It still > > works, but something is off. I'll investigate more tomorrow. > > Hi, > > this issue sounds rather strange. Regarding IP, ptp4l only uses UDP > multicast and unicast, so TCP traffic for SSH should never be > disturbed. > > One wild guess from my side is that ptp4l triggers some bug in your > setup. Maybe the network driver for your hardware or the hardware > itself behaves strange once timestamping is enabled by ptp4l. > > Regards, > Tino
