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

[Richard Cochran]

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.

Thanks,
Richard