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SubjectRe: USB device DMA support on OMAP2
On 11/5/07, David Brownell <> wrote:
> > The current omap udc dosen't support the DMA mode
> It most certainly does!! I think you it has DMA issues on OMAP2.

Ah, Yes, OMAP1 supports the DMA mode. It means the OMAP2 DMA support.

> > and it has some problem at setup time on OMAP2 with previous patch file.
> > I found that the code assumes bulk out required the big data transfer.
> > But MODE SELECT(6) sent the only 24 bytes. it makes a problem.
> > So I implement the small packets handling for it.
> >
> > It is tested with both linux and windows.
> >
> > Signed-off-by: Kyungmin Park <>
> I'll have a look at it, thanks.
> Is this aginst the linux-omap tree, or current code?
> (There _shouldn't_ be any differences, but I've not checked in
> some time now and such issues do creep in from time to time.)

There's some difference related with double buffering.
It's against the latest kernel code. I checked it.

Thank you,
Kyungmin Park
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