Re: [PATCH net-next v5 08/16] net: ethtool: Add a command to expose current time stamping layer

From: Köry Maincent
Date: Tue Oct 17 2023 - 04:29:43 EST


On Mon, 16 Oct 2023 16:50:01 -0700
Richard Cochran <richardcochran@xxxxxxxxx> wrote:

> On Mon, Oct 16, 2023 at 12:41:34PM +0200, Köry Maincent wrote:
>
> > Still I am wondering why hardware timestamping capabilities can be enabled
> > without phc.
>
> There is hardware that simply provides time values on frames from a
> free running clock, and that clock cannot be read, set, or adjusted.
>
> So the time stamps only relate to other time stamps from the same
> device. That might be used for performance analysis.

Ok, thanks you for the information.

Köry