[alsa-devel] Embedded I2S / 192khz

Liam Girdwood lg at opensource.wolfsonmicro.com
Thu May 8 16:22:41 CEST 2008

On Thu, 2008-05-08 at 15:08 +0100, Mark Brown wrote:
> On Thu, May 08, 2008 at 09:50:32AM -0400, Andrew Paprocki wrote:
> > Is anyone aware of a Linux/ALSA capable chip that can drive 192khz
> > I2S? I poked through the ASoC code and could only see 96khz
> > capability.
> The PowerPC code in sound/soc/fsl (as of 2.6.25) supports up to 192kHz,
> though it appears to require the codec to clock the bus.  The SuperH and
> Alchemy code in:
>    git://opensource.wolfsonmicro.com/linux-2.6-asoc
> says they support up to 192kHz too.  PXA3xx should support this too when
> it's done.

heh, shows how much attention I've been paying lately to commits.

PX2xx (SSP) and i.MX3x (SSI) should also do 192kHz too. Interestingly
pxa2xx I2S almost manages (datasheet max is 48kHz) 192kHz but underruns
a bit!

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