> > Do we want this activated upstream? I think it is nice to have.
> 
> I don't think so, as there is no actual user.

OK.

> It could be enabled in a DT overlay describing a board connected to
> CN4. Or just a simple overlay for testing TPU on CN4.  I'd be happy
> to add the latter to
> https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/log/?h=topic/renesas-overlays

With the same argument, let's see if someones actually wants to use it
and adds it as an overly then.

Thanks for fixing the sorting in patch 2/3!