[U-Boot] [PATCH] smsc95xx: align buffers to cache line size

[Ilya Yanok]

Dear Marek,

On Mon, Jul 9, 2012 at 1:31 AM, Marek Vasut <marek.vasut at gmail.com> wrote:

> > non-ARMv7 system now to do some testing...
> > But it used to work without any alignment, right? (with disabled dcache,
> of
> > course)
> > That makes me think that data buffers don't need any alignment (from USB
> > pov, not cache) and 32-byte alignment is required for internal structs
> > only.
>
> > Hm.. I have to admit I'm not very much into USB specs and I don't have
> any
> See ehci-r10.pdf ... chapter 3.5 ... the buffer pointer has to be aligned
> too it
> seems.
>

But in practice it works without any alignment... ok, you made me read the
spec ;)
page 55: "For the page 0 current offset interpretation, this field is the
byte offset into the current page"

Regards, Ilya.