[alsa-devel] [PATCH 1/2] ca0106 playback 44100Hz support to SPDIF and playback format & rate constraints

[Takashi Iwai]

At Wed, 03 Sep 2008 19:36:51 +0100,
James Courtier-Dutton wrote:
> 
> Trent Piepho wrote:
> > On Tue, 2 Sep 2008, James Courtier-Dutton wrote:
> >> Ben Stanley wrote:
> >>> +		/* We only support 44100 to spdif, not to DAC.
> >>> +		   (FIXME WHY?)*/
> >> WHY?  Because the DAC cannot be clocked at 44100, only 48000 and 96000
> >> from the CA0106 chip.
> >> The SPDIF can be clocked at 44100.
> >> It is a hardware limitation.
> > 
> > The DAC supports 44100.  Is the problem that the ca0106 can't provide a
> > 44100 clock to the DAC?
> It does not really matter why, it does not work at 44100 and that is fact.

It does matter.  At least, the situation should be commented
correctly.  Otherwise you'll have the same question and give the same
answer again and again.


Takashi