[alsa-devel] usbaudio: Support for USB audio v2.0 devices

adelias adelias at freemail.gr
Tue Apr 27 15:23:48 CEST 2010

On 2/3/2010 8:35 μμ, Daniel Mack wrote:
> On Tue, Mar 02, 2010 at 11:13:04AM +0200, adelias wrote:
>> Thanks to all involved for working on usb audio v2.
>> Last night I installed the 20100226 snapshot. I did a little testing
>> with my XMOS board using toslink out into may DAC. I tried various files
>> ranging 16bit/44110kHz-24bit/192000kHz. The 44110 files had quite a bit
>> of static, the higher bitrate files were better. As you stated the
>> sampling rate is not correct and be verified by looking at the flashing
>> LEDs on the XMOS board. They should flash faster as sampling rate
>> increase. In this case no change was observed.
> Yes - this is all do be done. The sample rate setting is done with a
> different type of class request, which also addresses the interface now,
> unlike v1 devices which send that to the endpoint. But that's just one
> out of many differences that need to be addressed, and it's still a long
> way to go. I'm on it :)
> Daniel

I upgraded alsa to 1.0.23. The XMOS device is working great with the 
exception of some mild clicks here and there. Is this a known issue or
might it be a problem with my specific configuration?

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