For what it's worth, the Mellanox-based 1/10G devices I have access to seem to share one PHC between both ports:
bash-4.4# ethtool -T ma5 | grep Clock PTP Hardware Clock: 4 bash-4.4# ethtool -T ma6 | grep Clock PTP Hardware Clock: 4 bash-4.4# ethtool -i ma5 driver: mlx4_en bash-4.4# lspci | grep Mellanox 05:00.0 Ethernet controller: Mellanox Technologies MT27520 Family [ConnectX-3 Pro] We don't use them in this way, and I haven't played or tested this aspect but if'd be happy to poke them a little if anyone has any requests. - David On Thu, 23 May 2019 at 12:04, Richard Cochran <richardcoch...@gmail.com> wrote: > On Wed, May 22, 2019 at 04:01:18PM -0400, Sanjay Bhandari wrote: > > My question is about the scenario where they do share the same hardware > > clock (as described in the manual). > > The only HW I know is the Freescale (nxp) ETSEC with three ports, all > sharing one clock. > > Maybe there are other such devices, but I haven't seen them or even > heard of them. > > Thanks, > Richard > > > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users >
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