setup audio card results in codec not registered message

mohawi · January 3, 2019 at 1:37 PM

Hi all,

I recently bough an audioinjector octo card to use with my RPi3B running libreELEC 8.95.

While setting up I ran into a few problems, due to beeing a newbie in the raspberry world.

I followed the setup guide and adopted the /flash/config.txt while appending following lines:

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dtparam=spi=on
dtparam=i2c_arm=on
dtoverlay=audioinjector-addons
dtdebug=1

"aplay -l" still gives me:

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LibreELEC:/flash # aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 7/7
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Display More

Trying to research the reason the new card is not detected, I called dmesg and got following error messages:

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[    6.638581] audioinjector-octo soc:sound: ASoC: CODEC DAI cs42448 not registered - will retry
[    6.638598] audioinjector-octo soc:sound: snd_soc_register_card failed (-517)

The device tree setup debug messages via "vcdbg log msg" look unsuspecious so far.

By what I read online, the setup should be pretty self explaining, since all the drivers are already part of the os.

I guess I missed some settings. Does anyone have experience with setting up an external audio card or even the octo and could give me some advise?

I would highly appreciate this.

Thanks, mohawi

**HiassofT** · January 3, 2019 at 2:49 PM

In general I2S soundcards should work fine, but I'm not familiar with the audioinjector octo card.

Can you please post the full dmesg and vcdbg log msg output?

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vcdbg log msg 2>&1 | paste
dmesg | paste

You seem to have dtparam=audio=on in config.txt, drop that, it's not needed. Also not sure why you have spi=on and i2c_arm=on in config.txt- the devicetree overlay should enable all components so in general it's enough to add the dtoverlay line.

so long,

Hias

mohawi · January 3, 2019 at 3:36 PM

Hello Hias,

thank you for your reply.

You can find the output of vcdbg here: http://ix.io/1xqg

and of dmesg here: http://ix.io/1xqh

I removed the lines you told were unecessary. The problem still occures.

mohawi · January 3, 2019 at 5:23 PM

I just tried to use the card with libreELEC v8.2.5 and with that it works just like a charm.

After upgrading to 8.95.1 again, same error as before. Seems as if the codec drivers are not compatible maybe?

**HiassofT** · January 3, 2019 at 6:36 PM

Could you check if the card works in Raspbian with kernel 4.19?

First install Raspbian Stretch and add the soundcard config, the card should be detected.

Then run the following command to switch to kernel 4.19

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sudo BRANCH=next rpi-update

Then reboot and check if the card is still detected.

The LibreELEC kernel config looks fine (all drivers should be there) but IIRC the Audioinjector Octo driver was dropped for some time in kernel 4.19 because it didn't compile - maybe the driver isn't fully working yet in kernel 4.19.

so long,

Hias

mohawi · January 4, 2019 at 7:45 PM

Hi Hias,

I checked and the error messages are exactly the same. So then it seems the removed driver is the reason. Whose responsibility is that? Should I write a bug for the raspberry kernel, since the driver was removed due to, I guess changed interfaces, or the developer who wrote the driver in the first place?

Or is there a good chance, that this issue is already known and in work?

best regards,

Mohawi

**HiassofT** · January 4, 2019 at 8:18 PM

Thanks a lot for testing!

It'd be best to contact Matt Flax (who created the card and wrote the driver) and tell him that the driver doesn't work on kernel 4.19. He can then submit the required changes to the RPi kernel where we will pick them up.

Opening an issue on RPi kernel github would be another possibility, but as probably only Matt has the hardware and knows what to change contacting him directly would probably be easier/quicker.

so long,

Hias

flatmax · January 4, 2019 at 11:34 PM

Hi all,

I am remote during the holiday period and don't have an octo with me. It seems that all the necessary drivers are present in raspbian :

snd-soc-audioinjector-octo-soundcard.ko

snd-soc-cs42xx8*

audioinjector-addons.dtbo

This is the first I have heard of problems with the card and libreelec.

I will validate its operation when I return later this month using the latest raspbian.

Matt

flatmax · January 29, 2019 at 4:05 AM

Hi can you please verify that a soft restart (without a power cycle) brings the card up ?

I have reverted the device-tree to dummy supplies which brings the card up reliably.

audioinjector-octo: revert to dummy supplies by flatmax · Pull Request #2834 · raspberrypi/linux · GitHub

mohawi · February 2, 2019 at 5:16 PM

Hi flatmax, thank you for looking into the problem.
I don't know if I did everything correctly, but I wasn't able to verify your fix. I gonna describe the steps I took:

1) Verify OctoCard is working with currently released RaspianStretch Kernel 4.14.y

- set the dtoverlay to audioinjector-addons in /boot/config.txt

--> worked

2) Take the provided .deb file from your repo (v0.4) and install this

- check /boot/config.txt still has the dtoverlay set to audioinjector-addons

--> worked

3) update to Kernel 4.19.17 via "sudo BRANCH=next rpi-update"

- check /boot/config.txt still has the dtoverlay set to audioinjector-addons

--> octo card was not found (neither after soft, nor hard reset)

4) take provided .deb file from your repo (v0.4) and install

--> Kernel was set back to 4.14.y

--> worked, but basicly same setup as in step 2

5) - update back to Kernel 4.19.17

- check /boot/config.txt still has the dtoverlay set to audioinjector-addons

- copy "audioinjector-addons-overlay.dts" from commit 8f862eec9ff66cbeefeea2b3611f5391ba737e55 to raspberry

- compile .dtbo via "dtc -O dtb -o audioinjector-addons.dtbo audioinjector-addons-overlay.dts"

--> got following warnings:

audioinjector-addons.dtbo: Warning (unit_address_vs_reg): Node /fragment@0 has a unit name, but no reg property

audioinjector-addons.dtbo: Warning (unit_address_vs_reg): Node /fragment@1 has a unit name, but no reg property

audioinjector-addons.dtbo: Warning (unit_address_vs_reg): Node /fragment@2 has a unit name, but no reg property

- copied compiled dtbo to /boot/overlays

- rebooted

--> octo card is still not dected (neither after soft, nor hard reset)

logs of step 5):
dmesg log: http://ix.io/1zpd

vcdbg log: http://ix.io/1zpe

Best regards,

Mohawi

flatmax · February 3, 2019 at 10:28 PM

I'll address the 4.19 failure in this github issue :

Octo not working anymore with RPi kernel 4.19 · Issue #14 · Audio-Injector/Octo · GitHub

flatmax · March 20, 2019 at 10:04 PM

An initial fix is up on the github issue (see message above).

The fix is to load the snd_soc_cs42xx8_i2c module at boot time. For example add this to your /etc/modules file.

This makes your modules file look like the following :

pi@raspberrypi:~ $ cat /etc/modules

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i2c-dev
snd_soc_cs42xx8_i2c

I will update the device tree soon to make sure it autoloads in future releases.