Raspberry PI 2B/3 and USB audio

[Hans Petter Selasky]

On 11/28/18 11:28 AM, Brian Scott wrote:
> On 28/11/18 9:22 pm, Hans Petter Selasky wrote:
>> On 11/28/18 11:13 AM, Brian Scott wrote:
>>> On 28/11/18 7:45 pm, Hans Petter Selasky wrote:
>>>> On 11/28/18 1:46 AM, Brian Scott wrote:
>>>>> On 27/11/18 6:38 pm, Hans Petter Selasky wrote:
>>>>>> On 11/26/18 8:47 PM, Herbert J. Skuhra wrote:
>>>>>>> Well, this USB sound card works perfectly fine on my desktop PC
>>>>>>> running FreeBSD (amd64).
>>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> There is a problem in the DWC OTG USB controller driver that it
>>>>>> cannot
>>>>>> handle the big data payload 24-bit 48KHz sampling requires.
>>>>>> Unfortunately your device has only one sample size selection.
>>>>>>
>>>>>> If you buy a USB sound device marked as "HIGH SPEED USB" it should
>>>>>> work. Yours is "spd=FULL".
>>>>>>
>>>>>> --HPS
>>>>> Just an additional data point,
>>>>>
>>>>> This one also sounds like junk but is high speed:
>>>>>
>>>>>        ugen0.6: <Generic USB Audio> at usbus0, cfg=0 md=HOST spd=HIGH
>>>>>        (480Mbps) pwr=ON (100mA)
>>>>>
>>>>>          bLength = 0x0012
>>>>>          bDescriptorType = 0x0001
>>>>>          bcdUSB = 0x0200
>>>>>          bDeviceClass = 0x0000  <Probed by interface class>
>>>>>          bDeviceSubClass = 0x0000
>>>>>          bDeviceProtocol = 0x0000
>>>>>          bMaxPacketSize0 = 0x0040
>>>>>          idVendor = 0x0bda
>>>>>          idProduct = 0x4040
>>>>>          bcdDevice = 0x0000
>>>>>          iManufacturer = 0x0003  <Generic>
>>>>>          iProduct = 0x0001  <USB Audio>
>>>>>          iSerialNumber = 0x0002  <201405280001>
>>>>>          bNumConfigurations = 0x0001
>>>>>

Hi,

Can you also dump the device descriptors?

usbconfig -d 0.6 dump_curr_config_desc


And can you capture with usbdump some traffic while doing playback?

usbdump -i usbus0 -f 6 -s 65536 -vvv > ~/log.txt


And this device works fine using a regular PC with FreeBSD installed?

--HPS