Re: [PATCH net-next v2 0/2] ptp: add control over HW timestamp latch point

[Vadim Fedorenko]

On 29/10/2024 15:56, Kubalewski, Arkadiusz wrote:
> > From: Vadim Fedorenko <vadim.fedorenko@xxxxxxxxx>
> > Sent: Tuesday, October 29, 2024 12:30 PM
> >
> > On 28/10/2024 20:47, Arkadiusz Kubalewski wrote:
> > > HW support of PTP/timesync solutions in network PHY chips can be
> > > achieved with two different approaches, the timestamp maybe latched
> > > either in the beginning or after the Start of Frame Delimiter (SFD) [1].
> > >
> > > Allow ptp device drivers to provide user with control over the timestamp
> > > latch point.
> > >
> > > [1] https://www.ieee802.org/3/cx/public/april20/tse_3cx_01_0420.pdf
> >
> > I just wonder should we add ethtool interface to control this feature.
> > As we are adding it for phy devices, it's good idea to have a way to
> > control it through eth device too. WDYT?
>
> Seems doable, I guess somehow expand the controllability being added right
> now with this series:
> https://lore.kernel.org/netdev/20241023-feature_ptp_netnext-v18-0-ed948f3b6887@xxxxxxxxxxx/#r
> Or some other idea?

Yeah, the series mentioned correlates with your work, that's why I asked 
about it.
It would be great to be sure that the interface you are proposing can be
reused or somehow combined with the series.