On Fri, 31 Jul 2009 10:58:23 +0300
Eduardo Valentin <eduardo.valentin@xxxxxxxxx> wrote:
> On Thu, Jul 30, 2009 at 08:57:21PM +0200, ext Jarkko Nikula wrote:
> > On Thu, 30 Jul 2009 15:49:32 +0300
> > Eduardo Valentin <eduardo.valentin@xxxxxxxxx> wrote:
> >
> > > From: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx>
> > >
> > > Do not allow applications to use the full buffer found on
> > > McBSP1,3,4,5. Using the full buffer in threshold mode causes
> > > the McBSP buffer to run dry, which can be observed as channels
> > > are switching (in reality the channels are shifting).
> > >
> > ...
> > > --- a/arch/arm/mach-omap2/mcbsp.c
> > > +++ b/arch/arm/mach-omap2/mcbsp.c
> > > @@ -129,7 +129,7 @@ static struct omap_mcbsp_platform_data
> > > omap34xx_mcbsp_pdata[] = { .rx_irq =
> > > INT_24XX_MCBSP1_IRQ_RX, .tx_irq =
> > > INT_24XX_MCBSP1_IRQ_TX, .ops = &omap2_mcbsp_ops,
> > > - .buffer_size = 0x7F,
> > > + .buffer_size = 0x6F,
> > > },
> >
> > Is it possible that also McBSP2 would require that maximum burst
> > transmit size should be 0x10 smaller than size of internal
> > buffer/fifo?
>
> That's already not at full size. There is room for 1024+256 places on
> mcbsp2.
>
True, but I was wondering can this same problem occur also on McBSP2 if
using proper size threshold? Like size near the McBSP2 audio buffer
(1024x32) or near the TX buffer (256x32).
--
Jarkko
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