> > > What about splitting this in two separate checks at the top level:
> > >   - one for regs (R-Car V3U vs. the world), and
> > >   - a second for interrupts (R-Car V3U+S4-8 vs. the world)?
> >
> > This task seems too much for my YAML-foo :( I couldn't get it to work.
> > Can we leave it as-is for now?
> 
> You just need an allOf with two if statements, cfr. e.g.
> Documentation/devicetree/bindings/media/renesas,vin.yaml?

First, I don't think the negative logic is as bad here because there is
no 'else' block which is far away. Second, I think we need a 'not'
anyhow because the condition is:
	'if not r8a779f0 then required interrupts'

Third, I still think we can fix it incrementally later if we want. The
new board has enough issues to take care of. For now, I'd rather
investigate those than YAML ;)