Cirrus Logic Audio Card working on the Raspberry Pi 2

For good measure, I've put together a tar archive of the 3.18 kernels with Cirrus Logic drivers, that can be installed on top of an existing Raspbian 3.18 installation.

Download the archive file kernel_3_18_9_W_CL.tgz from here: https://drive.google.com/file/d/0BzIaxMH3N5O1S1FfSGpqYjEwaVk/view?usp=sharing

To install:
Become root: sudo -s
Go to root directory: cd /
Untar the archive: tar xvzf /path/to/where/you/saved/kernel_3_18_9_W_CL.tgz
Add these lines

dtparam=spi=on
dtparam=i2c_arm=on
dtoverlay=rpi-cirrus-wm5102-overlay

to the file /boot/config.txt

On a RPi2B, also add

kernel=kernel7_CL.img

or, on all others, add

kernel=kernel_CL.img

to /boot/config.txt

Put these lines into /etc/modprobe.d/raspi-blacklist.conf  (create the file if it doesn't exist.)

softdep arizona-spi pre: arizona-ldo1
softdep spi-bcm2708 pre: fixed

Reboot.

If it doesn't work, you can revert to your original kernel by just removing the "kernel=kernel_CL.img" line from /boot/config.txt

--

Ragnar

Ragnar:

Thank you so much for putting this together.  I am up and running with the new kernel.  I am no luck however with the sound and I am putting that on my setup for now.  I have a local install of kodi on RPI2 to be controlled by BubbleUPnp android app, as well a as rpi2 install of BubbleUPnp, which allows to designate kodi as an openhome rendered and then drive the sound to the Onkyo Amp.  This setup worked only with HDMI before.  I am using the Sound configuration on Raspberry Pi with ALSA | Stephen C Phillips to troubleshoot, why I am not getting any sound. 

Ahmed

I know nothing about Kodi

Have you run any of the "Playback.." scripts to select which output(s) the card should use?

I've noticed there's an experimental build of OpenELEC for the RPi2/Cirrus. Maybe some clues in there...

http://www.horus.com/~hias/tmp/openelec-wolfson/

--

Ragnar

I have not run the play back scripts.  Thanks for pointing those out.  I think I need to go simple and use the 3.5 mm audio out instead of the digital out and work backwards.  I wish I did not have have to use kodi either.  I just needed a simple media player. I started looking at mpd and somehow ended up with kodi!  Kodi has an audio output area which I need to check again.

Ragnar:

i try to install your archive "kernel_3_18_9_W_CL.tgz" on a fresh 2015-02-16-raspbian-wheezy and no sound from the CL card. The card doesn't seem to be recognized by alsa...

(From your image, it works like a charm Thanks!!!)

It looks like you have another sound card installed, possibly it has taken the position as the default card.

what does "aplay -l", "aplay -L" and "cat /proc/asound/cards" say?

--

Ragnar

pi@raspberrypi ~ $ aplay -l
**** Liste des Périphériques Matériels PLAYBACK ****
carte 0: sndrpiwsp [snd_rpi_wsp], périphérique 0: WM5102 AiFi wm5102-aif1-0 []
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
carte 1: ALSA [bcm2835 ALSA], périphérique 0: bcm2835 ALSA [bcm2835 ALSA]
  Sous-périphériques: 8/8
  Sous-périphérique #0: subdevice #0
  Sous-périphérique #1: subdevice #1
  Sous-périphérique #2: subdevice #2
  Sous-périphérique #3: subdevice #3
  Sous-périphérique #4: subdevice #4
  Sous-périphérique #5: subdevice #5
  Sous-périphérique #6: subdevice #6
  Sous-périphérique #7: subdevice #7
carte 1: ALSA [bcm2835 ALSA], périphérique 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
  Sous-périphériques: 1/1
  Sous-périphérique #0: subdevice #0
pi@raspberrypi ~ $ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=sndrpiwsp
    snd_rpi_wsp, 
    Default Audio Device
sysdefault:CARD=sndrpiwsp
    snd_rpi_wsp, 
    Default Audio Device
default:CARD=ALSA
    bcm2835 ALSA, bcm2835 ALSA
    Default Audio Device
sysdefault:CARD=ALSA
    bcm2835 ALSA, bcm2835 ALSA
    Default Audio Device
pi@raspberrypi ~ $ cat /proc/asound/cards
 0 [sndrpiwsp      ]: snd_rpi_wsp - snd_rpi_wsp
                      snd_rpi_wsp
 1 [ALSA           ]: bcm2835 - bcm2835 ALSA
                      bcm2835 ALSA
pi@raspberrypi ~ $

I've compared your image and a fresh install of raspbian + your archive.

The only difference i found, was for the name of the kernel.

in your (working) image there is no "kernel=kernel7_CL.img" in your /boot/config.txt (or commented) => so the kernel7.img is loaded.

So i tried to rename the kernel7_CL.img into kernel7.img (saving the original before) => youpi! I don't know why, but it works now !

Excellent

kernel7.img from the image is the same file as kernel7_CL.img in the tar archive.

As you noticed that is the file a RPi2 will pick if you don't explicitly choose another one in /boot/config.txt.

Maybe you missed the step on editing /boot/config.txt?

On a RPi2B, also add
  kernel=kernel7_CL.img 

or, on all others, add
  kernel=kernel_CL.img 

to /boot/config.txt
 

Anyway, you got it working and thats great!

--

Ragnar

the config.txt was edited like in your 2nd post...

Strange, but it seems that the "kernel=..." in the "config.txt" is ignored for the rpi2 (or i become crazy! )

I will make an another try to be sure.

One more time, Thanks for your work!