USB audio 2.0 testers wanted
    Clemens Ladisch 
    clemens at ladisch.de
       
    Sat Nov 10 13:56:11 UTC 2012
    
    
  
Marcel Bonnet wrote:
> The bcdUSB field reports the highest version of USB the device
> supports.
But the USB specification is *not* the USB Audio specification.
USB Audio 2.0 devices can be recognized by a bFunctionProtocol
entry of 32 in lsusb, like this:
  ...
  bDeviceProtocol         1 Interface Association
  ...
      bFunctionClass          1 Audio
      bFunctionSubClass       0
      bFunctionProtocol      32
Regards,
Clemens
    
    
More information about the freebsd-multimedia
mailing list