Re: [Linuxptp-users] utc_offset: how does it work? Does it work with SW TS?

[Richard C. <ric...@gm...>]

On Fri, Jun 30, 2023 at 07:58:15AM -0300, Elder Costa wrote:
> Em qui., 29 de jun. de 2023 às 01:35, Richard Cochran
> <ric...@gm...> escreveu:
> > Also, it isn't clear from this how ptp4l(M/HW) on SOM eth_am is configured.
> >
> > If not in BC mode, then you also should clear the ptpTimescale flag
> > for that instance using pmc "set GRANDMASTER_SETTINGS_NP ..."
> 
> I tried BC mode to no avail. I ended up using OC in all interfaces.
> After some digging, I had the impression BC would require
> specialized hardware, not my case, where the SOM has a Gbit
> interface built-in and we had to add another one on the base board.

You can run a BC on non-specialized hardware using the ptp4l
'boundary_clock_jbod' option togther with phc2sys "automatic" mode.

Thanks,
Richard