Re: [Question] Always got STALL in MUSB Host driver

[David Brownell <david-b@pacbell.net>]

On Sunday 18 November 2007, Nazim Khan wrote:
> Hi Dave,
> 
> Was that in DMA mode or PIO Mode?

Probably PIO, since that's usually the first stage of
debugging given a choice of modes.

I vaguely recall it was one of those two modes, but
don't recall which one.  If it was DMA, I sure don't
recall which of the several DMA engine wass involved.  ;)

- Dave


> regards,
> Nazim
> 
> On Nov 16, 2007 12:13 AM, David Brownell <david-b@pacbell.net> wrote:
> > On Thursday 15 November 2007, Tony Lindgren wrote:
> > > Hmm, I never got double buffering to reliably work on tusb as far as I
> > > remember. I guess Dave got it working on DaVinci, so maybe he has some
> > > pointers.
> >
> > It's been some time since I tried that.  What I vaguely recall
> > is that it worked on the peripheral side, but on the host side
> > there was a issue if for example both sides (tx, rx) of a given
> > FIFO tried to do things at the same time.
> >
> > The driver code has improved a lot since I saw those failures,
> > so I wouldn't trust those memories to indicate anything specific
> > about current behavior.
> >
> > - Dave
> >
>