On Thu, Mar 17, 2016 at 06:23:40PM +0100, Arnd Bergmann wrote: > The regmap binding talks about one thing, which is register > endianess, and it gets almost every aspect of it wrong. > > This replaces the current text of the file with a version > that makes more sense and that matches what we implement > now. > > Signed-off-by: Arnd Bergmann <a...@arndb.de> > Fixes: a06c488da0b0 ("regmap: Add explict native endian flag to DT bindings") > Fixes: 275876e208e2 ("regmap: Add the DT binding documentation for > endianness")
[...] > +Note: > +Regmap defaults to little-endian register access on MMIO based > +devices, this is by far the most common setting. On CPU This seems a bit Linux specific to me, but I guess if we are defining the binding to be this way it is fine. Acked-by: Rob Herring <r...@kernel.org> > +architectures that typically run big-endian operating systems > +(e.g. PowerPC), registers can be defined as big-endian and must > +be marked that way in the devicetree.