Re: [Linuxptp-users] PHYs supporting HW timestamping

[David M. <da...@ar...>]

It's not on the list (probably due to not being ptp-ready "out of the box"
under Linux) but Microsemi's VSC8572 (nee Vitesse) and family could do the
job (for 2-step PTP).
https://www.microsemi.com/product-directory/gigabit-ethernet-phys/3905-vsc8572

For various reasons we ended up not using this feature so unfortunately I
can't comment on the effort required to make it happen.
Whilst there seems to be a Linux phylib driver for the part, last I checked
timestamping wasn't implemented so there could be some fair bringup work.
YMMV, but the part exists and hopefully is a useful datapoint in your
search.

- David

On Mon, 21 Jan 2019 at 20:08, Arthur Dent <art...@cy...> wrote:

> Hi
> On my Cyclone V SoC board I have ptp running with HW timestamping in MAC
> (stmmac), but I need even better accuracy, i.e. hardware timestamping in
> PHY. Is my only option to use TI’s DP83640 PHY (which only supports 100Mb)
> or am I reading the information on http://linuxptp.sourceforge.net
> 0incorrectly?
> BR
> AD
>
>
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