On Mon, Mar 13, 2017 at 1:46 PM, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote: > On Mon, Mar 13, 2017 at 1:41 PM, Arnd Bergmann <arnd@xxxxxxxx> wrote: >> On Thu, Mar 9, 2017 at 7:18 PM, Geert Uytterhoeven >> >> I'd prefer to not have to do the early registration at all and have fewer >> special cases. Can you list a specific example that requires this? > > The specific example is the Renesas R-Car SYSC driver, which manages PM > Domains and thus needs to be initialized from an early_initcall. Ok, and what prevents us from using information in DT to detect which variant we have? Is this a case of absolutely having to know the exact hardware revision at the time of initialization, or is it just to simplify the implementation of the SYSC driver? Arnd