On Sun, Mar 06, 2022 at 09:56:52AM +0100, Gerhard Engleder wrote:

If hardware would support a free running time additionally to the
physical clock, then the physical clock does not need to be forced to
free running. Thus, the physical clocks can still be synchronized while
vclocks are in use.

So... the HW must provide frame time stamps using the one clock and
ancillary operations using the other, right?

Thanks,
Richard