On Mon, Dec 06, 2021 at 07:27:54AM -0500, Dan Geer wrote: > I would like to start with my thanks for the support of the Linux PTP > Project. The tools are a great success, and keep getting better! > > I'm developing a custom SBC that works perfectly approximately 90% of the > time. However, when the SBC starts or restarts there are cases immediately > after initialization where ptp4l goes into a repeating cycle of 1) syncing > to a PTP Grand Master, 2) timing out on the port_delay_request, and 3) > resetting the failed port. > > My SBC is based on a MPC8360E (NXP PowerQUICC® II Pro Processor with > ucc_geth MACs) connected to DP83640 PHYTERs.
You want to use the PTP features in the phyters. First step is to make sure the MAC driver isn't also doing time stamping. I don't see PTP support in mainline ucc_geth, but maybe you have a vendor kernel with time stamping patched in? Thanks, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
