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Cirrus Logic Audio Card working on the Raspberry Pi 2

Former Member

Hi all!

 

As you might know, Cirrus Logic's main kernel source branch recently switched to 3.18.

My first thought was "Hmm, that means the Cirrus Logic card could finally work on the RPi2..."

I have built a couple of 3.18 kernels for my B+ and RPi2 and I have managed to get both models to produce sound image

 

It's still early days, i.e. there are possibly bugs and glitches to fix, but for those of you who would like to try it out I've made an image file that you can download here:

https://drive.google.com/file/d/0BzIaxMH3N5O1cmJ1bFhMcG1hc0E/view?usp=sharing

The file is a 1.3 GB zip. Uncompressed size is 3.1 GB, so it fits comfortably on a 4 GB card.


The image is based on the standard 2015-02-16-raspbian-wheezy image from the Foundation that you flash to a SD card for a fresh install.

I have only added my kernels and set up the configuration files to get the card going.

It should work on the older B model  with a Wolfson Audio Card too, but I haven't tested that yet.

 

Have fun!

--

Ragnar

Parents

  • Many thanks Ragnar - I got this working with my Pi2 using the new image. image

     

    One thing I have noticed: the red and green LEDs are illuminated on the audio card until the first recording is started. Once recording has started, the red LED goes out and stays out. Previously, with the earlier kernel version and a Pi B+I think the red LED went out once the Pi had booted.  Not that it really matters, but it's just something I noticed.

     

    Many thanks once again for taking the time to do this.

     

    Update:  I spoke too soon. Now when I boot, I get the red and green LEDs, and both stay lit, and recording is not possible.  image  Some troubleshooting required....

Reply

  • Many thanks Ragnar - I got this working with my Pi2 using the new image. image

     

    One thing I have noticed: the red and green LEDs are illuminated on the audio card until the first recording is started. Once recording has started, the red LED goes out and stays out. Previously, with the earlier kernel version and a Pi B+I think the red LED went out once the Pi had booted.  Not that it really matters, but it's just something I noticed.

     

    Many thanks once again for taking the time to do this.

     

    Update:  I spoke too soon. Now when I boot, I get the red and green LEDs, and both stay lit, and recording is not possible.  image  Some troubleshooting required....

Children
  • in reply to hystrix

    One thing I have noticed: the red and green LEDs are illuminated on the audio card until the first recording is started. Once recording has started, the red LED goes out and stays out. Previously, with the earlier kernel version and a Pi B+I think the red LED went out once the Pi had booted. Not that it really matters, but it's just something I noticed.

     

    As far as I know,  the red led indicates whether the S/PDIF chip is controlled over the SPI or the I2C bus. I think I have seen some some changes there...

    --

    Ragnar