[U-Boot] [PATCH] ppc4xx: Add CATCenter Io 405EP board support

[Stefan Roese]

Hi Dirk,

On Wednesday 13 October 2010 09:25:33 Eibach, Dirk wrote:
> > > +#define MDIO_ACTIVE	out32(GPIO0_TCR, in32(GPIO0_TCR) |
> > > CONFIG_SYS_MDIO_PIN)
> > 
> > Use out_be32() accessors here and below.
> 
> Just being curious: why?

Because of the included memory barriers in the in/out_be32() functions. You 
might run into problems when using the "plain" in/out32() function requiring 
extra "sync" instructions.

> Has in32() also to be replaced?

Yes, of course.

Cheers,
Stefan

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