On Tue, Nov 22, 2016 at 09:38:43AM -0800, Dave Berg wrote:
> The system we're targeting is the TI am335x Starter Kit (TMDSSK3358),
> which uses the Qualcomm Atheros ar8031 PHY, and the MAC in the am335x
> processor uses the TI CPTS for timestamping.

Just FYI, we don't have generic support for systems with both a MAC
and a PHY PHC on the same interface.  If and when you get a PHY
driver, then you'll have to patch the MAC driver minimally to disable
CPTS support and pass the ioctls through.
 
> Is there any chance that a driver for the ar8031 with timestamping and
> PHC support exists outside of mainline Linux so that we could still
> potentially use this platform? Even an in-development driver could be
> an option for us.

I am not aware of any.

> If not, is this group aware of any alternative 1 GigE PHYs with PHC
> Linux driver support of some sort?

Yeah, a gigabit PHY with PHC would be great, but unfortunately I have
not seen one yet.  Too bad NatSemi^W TI didn't produce a GB phyter.

Sorry,
Richard

PS  IIRC, there is a technical hurdle to achieve real PHY time stamps
in gigabit devices.  Are you sure the Atheros time stamps in the PHY
and not on the MII bus inputs/outputs?  (Just curious)

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