[U-Boot] [PATCH 0/4] USB and cache related fixes

Marek Vasut
2012-06-14T23:17:55Z

Dear Tom Rini,

> On 06/14/2012 03:02 PM, Marek Vasut wrote:
> > Dear Tom Rini,
> >
> >> Hey all,
> >>
> >> In commit b8adb12 the cache flushing behavior was changed for the EHCI
> >> stack. This change showed a few different problems on TI platforms
> >> (where our cacheline size is 64 not 32).
> >
> > Good thing, it made a bug surface ;-)
> >
> >> First, the dcache_off call that
> >> ehci-omap had been doing was now not happening soon enough to paper over
> >> the cache issues.
> >
> > Hm, is the dcache_off() call implemented properly so nothing is lost when
> > you shut off the cache btw?
>
> As best I can tell, yes. It will do a dcache_flush_all() and then set
> the correct bits.

Ok, good

Best regards,
Marek Vasut