Re: [PATCH 0/3] i2c-designware: Allow mixed endianness

[Ben Dooks <ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>]

On Wed, Jan 13, 2010 at 10:06:31PM -0500, Jean-Hugues Deschenes wrote:
> > > In the commit ed5e1dd5 (i2c-designware: Consolidate to use 32-bit
> > > word accesses), I tried to sort out the I/O endian issue, but it
> > > seems doesn't work for your environment, R/W data is swapped :-(
> > 
> > I think this one of those weird cases where you have _both_ types of
> > endianess of peripherals where anything in readl/writel isn't going
> > to help you out.
> 
> Actually, the specific case I'm interested in is one where I have an
> SOC built around an ARM core running in little-endian mode, in which
> the Designware IP has been instantiated and hooked up (to the internal
> data bus) in big endian format.
> 
> This patch could also come in handy, for example, if someone were to
> run an armeb kernel on an SOC where the DW IP has been instantiated
> and hooked up in little endian format (as is probably the case for
> most ARM-based SOCs out there).

I think this is currently an oditity, most ARM systems are still armel,
especiailly since very few distributions do armeb

-- 
Ben

Q:      What's a light-year?
A:      One-third less calories than a regular year.