Dear Marek, On Mon, Jul 9, 2012 at 1:31 AM, Marek Vasut <marek.va...@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.
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