Raspberry PI 2B/3 and USB audio

Wed Nov 28 10:13:26 UTC 2018

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
>>
>> But I notice that it handles both 48000 and 8000 according to the sound
>> driver.
>>
>>      cat /dev/sndstat
>>      FreeBSD Audio Driver (64bit 2009061500/aarch64)
>>      Installed devices:
>>      pcm0: <USB audio> at ? kld snd_uaudio (1p:1v/1r:1v) default
>>          snddev flags=0x2e2<AUTOVCHAN,BUSY,MPSAFE,REGISTERED,VPC>
>>          [pcm0:play:dsp0.p0]: spd 48000, fmt 0x00200010, flags
>>      0x00002100, 0x00000004
>>          interrupts 0, underruns 0, feed 0, ready 0
>>      [b:3072/1536/2|bs:4096/2048/2]
>>          channel flags=0x2100<BUSY,HAS_VCHAN>
>>          {userland} -> feeder_mixer(0x00200010) -> {hardware}
>>          pcm0:play:dsp0.p0[pcm0:virtual:dsp0.vp0]: spd 8000, fmt
>>      0x00100008, flags 0x10000000, 0x00000000
>>          interrupts 0, underruns 0, feed 0, ready 0 [b:0/0/0|bs:0/0/0]
>>          channel flags=0x10000000<VIRTUAL>
>>          {userland} -> feeder_root(0x00000000) -> {hardware}
>>          [pcm0:record:dsp0.r0]: spd 48000,fmt 0x00200010/0x00210000,
>>      flags 0x00002100, 0x00000007
>>          interrupts 0, overruns 0, feed 0, hfree 4608, sfree 4096
>>      [b:4608/2304/2|bs:4096/2048/2]
>>          channel flags=0x2100<BUSY,HAS_VCHAN>
>>          {hardware} -> feeder_root(0x00210000) ->
>>      feeder_format(0x00210000 -> 0x00200010) -> feeder_mixer(0x00200010)
>>      -> {userland}
>>          pcm0:record:dsp0.r0[pcm0:virtual:dsp0.vr0]: spd 8000, fmt
>>      0x00100008, flags 0x10000000, 0x00000000
>>          interrupts 0, overruns 0, feed 0, hfree 0, sfree 0
>>      [b:0/0/0|bs:0/0/0]
>>          channel flags=0x10000000<VIRTUAL>
>>          {hardware} -> feeder_root(0x00000000) -> {userland}
>>      No devices installed from userspace.
>>
>> Output sounds like rubbish with both 8000 speed stuff sent directly to
>> /dev/dsp using cat and higher quality stuff sent via sox play.
>>
>> It could also just be a junk piece of hardware from my local electronics
>> shop.
>
> Which version of FreeBSD is this?
>
> Can you show dmesg?
>
> --HPS
>
12.0 RC2 with /boot and /boot/msdos on sdcard and everything else on USB
connected hard drive (causing interference with the bus?). Otherwise
everything directly off the RC2 image + packages and a bit of configuration.

On repeating my tests (probably last done a few months ago with the
current snapshot) the sound was much better than I remember (almost
recognisable!). Maybe having the non-debug kernel is helping. Hope this
isn't a red herring.

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FreeBSD 12.0-RC2 r340839 GENERIC arm64
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on
LLVM 6.0.1)
VT(efifb): resolution 1280x1024
KLD file umodem.ko is missing dependencies
Starting CPU 1 (1)
Starting CPU 2 (2)
Starting CPU 3 (3)
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
arc4random: no preloaded entropy cache
random: entropy device external interface
MAP 7ffe000 mode 2 pages 2
MAP 8007000 mode 2 pages 2
MAP 39f35000 mode 2 pages 1
MAP 39f3a000 mode 2 pages 1
MAP 3b347000 mode 2 pages 1
MAP 3f100000 mode 1 pages 1
kbd0 at kbdmux0
ofwbus0: <Open Firmware Device Tree>
simplebus0: <Flattened device tree simple bus> on ofwbus0
ofw_clkbus0: <OFW clocks bus> on ofwbus0
clk_fixed0: <Fixed clock> on ofw_clkbus0
clk_fixed1: <Fixed clock> on ofw_clkbus0
regfix0: <Fixed Regulator> on ofwbus0
regfix1: <Fixed Regulator> on ofwbus0
psci0: <ARM Power State Co-ordination Interface Driver> on ofwbus0
local_intc0: <BCM2836 Interrupt Controller> mem 0x40000000-0x400000ff on
simplebus0
intc0: <BCM2835 Interrupt Controller> mem 0x7e00b200-0x7e00b3ff irq 20
on simplebus0
gpio0: <BCM2708/2835 GPIO controller> mem 0x7e200000-0x7e2000b3 irq
22,23 on simplebus0
gpiobus0: <OFW GPIO bus> on gpio0
generic_timer0: <ARMv7 Generic Timer> irq 0,1,2,3 on ofwbus0
Timecounter "ARM MPCore Timecounter" frequency 19200000 Hz quality 1000
Event timer "ARM MPCore Eventtimer" frequency 19200000 Hz quality 1000
gpiopps0: <GPIO PPS> on ofwbus0
gpiopps0: PPS input on gpio0 pin 18
bcm_dma0: <BCM2835 DMA Controller> mem 0x7e007000-0x7e007eff irq
4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19 on simplebus0
bcmwd0: <BCM2708/2835 Watchdog> mem 0x7e100000-0x7e100027 on simplebus0
bcmrng0: <Broadcom BCM2835 RNG> mem 0x7e104000-0x7e10400f on simplebus0
mbox0: <BCM2835 VideoCore Mailbox> mem 0x7e00b880-0x7e00b8bf irq 21 on
simplebus0
gpioc0: <GPIO controller> on gpio0
uart0: <PrimeCell UART (PL011)> mem 0x7e201000-0x7e201fff irq 24 on
simplebus0
spi0: <BCM2708/2835 SPI controller> mem 0x7e204000-0x7e204fff irq 26 on
simplebus0
spibus0: <OFW SPI bus> on spi0
spibus0: <unknown card> at cs 0 mode 0
spibus0: <unknown card> at cs 1 mode 0
iichb0: <BCM2708/2835 BSC controller> mem 0x7e804000-0x7e804fff irq 37
on simplebus0
bcm283x_dwcotg0: <DWC OTG 2.0 integrated USB controller (bcm283x)> mem
0x7e980000-0x7e98ffff,0x7e006000-0x7e006fff irq 43,44 on simplebus0
usbus0 on bcm283x_dwcotg0
sdhci_bcm0: <Broadcom 2708 SDHCI controller> mem 0x7e300000-0x7e3000ff
irq 46 on simplebus0
mmc0: <MMC/SD bus> on sdhci_bcm0
fb0: <BCM2835 VT framebuffer driver> on simplebus0
fbd0 on fb0
VT: Replacing driver "efifb" with new "fb".
fb0: 1280x1024(1280x1024 at 0,0) 24bpp
fb0: fbswap: 1, pitch 3840, base 0x3e83a000, screen_size 3932160
pmu0: <Performance Monitoring Unit> irq 50 on simplebus0
cpulist0: <Open Firmware CPU Group> on ofwbus0
cpu0: <Open Firmware CPU> on cpulist0
bcm2835_cpufreq0: <CPU Frequency Control> on cpu0
cpu1: <Open Firmware CPU> on cpulist0
cpu2: <Open Firmware CPU> on cpulist0
cpu3: <Open Firmware CPU> on cpulist0
gpioled0: <GPIO LEDs> on ofwbus0
gpioled0: <led0> failed to map pin
gpioled0: <led1> failed to map pin
cryptosoft0: <software crypto>
Timecounters tick every 1.000 msec
iicbus0: <OFW I2C bus> on iichb0
iic0: <I2C generic I/O> on iicbus0
ds32310: <Maxim DS3231 RTC> at addr 0xd0 on iicbus0
usbus0: 480Mbps High Speed USB v2.0
ugen0.1: <DWCOTG OTG Root HUB> at usbus0
uhub0: <DWCOTG OTG Root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus0
mmcsd0: 2GB <SD SU02G 8.0 SN 0AE1BA9D MFG 10/2010 by 3 SD> at mmc0
25.0MHz/4bit/65535-block
bcm2835_cpufreq0: ARM 600MHz, Core 250MHz, SDRAM 400MHz, Turbo OFF
ds32310: registered as a time-of-day clock, resolution 1.000000s
uhub0: 1 port with 1 removable, self powered
ugen0.2: <vendor 0x0424 product 0x9514> at usbus0
uhub1 on uhub0
uhub1: <vendor 0x0424 product 0x9514, class 9/0, rev 2.00/2.00, addr 2>
on usbus0
uhub1: MTT enabled
uhub1: 5 ports with 4 removable, self powered
ugen0.3: <vendor 0x0424 product 0xec00> at usbus0
smsc0 on uhub1
smsc0: <vendor 0x0424 product 0xec00, rev 2.00/2.00, addr 3> on usbus0
smsc0: chip 0xec00, rev. 0002
miibus0: <MII bus> on smsc0
smscphy0: <SMC LAN8700 10/100 interface> PHY 1 on miibus0
smscphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
ue0: <USB Ethernet> on smsc0
ue0: Ethernet address: b8:27:eb:4b:18:8c
ugen0.4: <Seagate Expansion> at usbus0
umass0 on uhub1
umass0: <Seagate Expansion, class 0/0, rev 2.10/1.00, addr 4> on usbus0
Release APs...random: unblocking device.
arc4random: no preloaded entropy cache
done
CPU  0: ARM Cortex-A53 r0p4 affinity:  0
 Instruction Set Attributes 0 = <CRC32>
da0 at umass-sim0 bus 0 scbus0 target 0 lun 0
da0: <Seagate Expansion 9300> Fixed Direct Access SPC-4 SCSI device
da0: Serial Number NA88TLH2
da0: 40.000MB/s transfers
da0: 953869MB (1953525167 512 byte sectors)
da0: quirks=0x2<NO_6_BYTE>
 Instruction Set Attributes 1 = <>
         Processor Features 0 = <AdvSIMD,Float,EL3 32,EL2 32,EL1 32,EL0 32>
         Processor Features 1 = <0>
      Memory Model Features 0 = <4k Granule,64k Granule,MixedEndian,S/NS
Mem,16bit ASID,1TB PA>
      Memory Model Features 1 = <>
Trying to mount root from ufs:/dev/ufs/pi3_hdd []...
      Memory Model Features 2 = <32b CCIDX,48b VA>
             Debug Features 0 = <2 CTX Breakpoints,4 Watchpoints,6
Breakpoints,PMUv3,Debug v8>
             Debug Features 1 = <0>
         Auxiliary Features 0 = <0>
         Auxiliary Features 1 = <0>
CPU  1: ARM Cortex-A53 r0p4 affinity:  1
CPU  2: ARM Cortex-A53 r0p4 affinity:  2
CPU  3: ARM Cortex-A53 r0p4 affinity:  3
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
ugen0.5: <Logitech USB Receiver> at usbus0
ukbd0 on uhub1
ukbd0: <Logitech USB Receiver, class 0/0, rev 2.00/24.00, addr 5> on usbus0
kbd1 at ukbd0
(da0:umass-sim0:0:0:0): READ(10). CDB: 28 00 00 53 b9 68 00 00 08 00
(da0:umass-sim0:0:0:0): CAM status: CCB request completed with an error
(da0:umass-sim0:0:0:0): Retrying command, 3 more tries remain
ugen0.6: <Generic USB Audio> at usbus0
lo0: link state changed to UP
smsc0: chip 0xec00, rev. 0002
ue0: link state changed to DOWN
ue0: link state changed to UP
ums0 on uhub1
ums0: <Logitech USB Receiver, class 0/0, rev 2.00/24.00, addr 5> on usbus0
ums0: 16 buttons and [XYZT] coordinates ID=2
uhid0 on uhub1
uhid0: <Logitech USB Receiver, class 0/0, rev 2.00/24.00, addr 5> on usbus0
uhid1 on uhub1
uhid1: <Generic USB Audio, class 0/0, rev 2.00/0.00, addr 6> on usbus0
uaudio0 on uhub1
uaudio0: <Realtek USB2.0 Audio> on usbus0
uaudio0: Play: 48000 Hz, 2 ch, 16-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Play: 44100 Hz, 2 ch, 16-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 96000 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 48000 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: Record: 44100 Hz, 2 ch, 24-bit S-LE PCM format, 2x8ms buffer.
uaudio0: No MIDI sequencer.
pcm0: <USB audio> on uaudio0
uaudio0: No HID volume keys found.