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 <[email protected]>
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
>
>
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