> > compatible:
> >     items:
> >       - enum:
> >           - hannstar,hsd060bhw4
> >       - const: himax,hx8394
> >
> > himax,hx8394 is the actual controller and is denoted as fallback compatible.
> >
>
> I see. Do you have an example of a panel controller that does this? I
> don't see that much value in doing this since you want the DTS to
> describe the actual HW and so want the panel I believe.

Yes, but the Panel needs to be built on top of the display IC so the
actual parent here is the display IC and the panel is sub-HW.  This is
what usually follows, here are some reference bindings.