Hi, thanks for the information on alternative 1 Gb PHYs (VSC8572 and LAN7430). A DP83640 evaluation board arrived today so I have decided to start out with that to see what kind of 1PPS accuracy I can get, and later decide if a 1 Gb interface is actually required for my application. BR AD
Sent: Tuesday, January 22, 2019 at 12:26 AM From: "David Mirabito" <davi...@arista.com> To: "Arthur Dent" <arthurd...@cyberdude.com> Cc: linuxptp-users@lists.sourceforge.net Subject: Re: [Linuxptp-users] PHYs supporting HW timestamping 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 <arthurd...@cyberdude.com[mailto:arthurd...@cyberdude.com]> 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[http://linuxptp.sourceforge.net] 0incorrectly? BR AD _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net[mailto:Linuxptp-users@lists.sourceforge.net] https://lists.sourceforge.net/lists/listinfo/linuxptp-users _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
