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Raspberry Pi Forum State of Wolfson drivers?
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  • wolfson
  • raspberry_pi
  • kernel
  • raspeberry_pi_accessories
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State of Wolfson drivers?

Former Member
Former Member over 11 years ago

Just wondering if any patches would come out soon for 3.12.x?

 

3.10.25 is getting rather old.

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  • Former Member
    0 Former Member over 11 years ago

    Hi Dave,

    here you can find some inofficial sources ->

    https://blog.georgmill.de/2014/04/29/compile-wolfson-audio-card-driver-for-kernel-3-12-y-a-new-try/

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    Do your patches support the lower sampling rates (like 8K) that were not working in 3.10?  I was told in a post that those rates would be part of 3.12, but I don't think that happened.  I also downloaded 3.18--there was absolutely no Wolfson card for Model B support in there as far as I could tell.

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    Do your patches support the lower sampling rates (like 8K) that were not working in 3.10?  I was told in a post that those rates would be part of 3.12, but I don't think that happened.  I also downloaded 3.18--there was absolutely no Wolfson card for Model B support in there as far as I could tell.

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  • Former Member
    0 Former Member over 10 years ago in reply to kjciszewski

    Did you read this -> http://www.element14.com/community/message/114712/l/re-pjsippjsua-with-wolfson-audio-card#114712 ?

    Does it help?

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    What I'm looking for is this:

     

    Simon Holt (to Kenneth Ciszewski)2 months ago

    Hi Kenneth,


    Both cards from a hardware perspective support the extended sample rates. This is available in the latest 3.12 kernel image and this supports both cards.


    The table below gives specific details.

     

    Audio Interface (AIF1)

    Parameter

    Description

    Typical Value

    Units

    Supported Sample Rates

    8, 12, 16, 24, 32, 48, 96, 192, 11.025, 22.05, 44.1, 88.2, 176.4

     

    kHz

    Sample depth

    Min bit depth of samples

    16

    bits

    Sample depth

    Max bit depth of samples

    32

    bits

    Notes

    The minimum supported sample rate is dependent on the SPDIF configuration. If the SPDIF Input or Output signal paths are enabled then the minimum sample rate will be 32kHz.

     

     

     

    Hope this helps,

    Cheers

    Simon

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  • Former Member
    0 Former Member over 10 years ago in reply to kjciszewski

    I did a quick recording test at 8K on georgpi 's kernel.

    It seems to work OK.

    --

    Ragnar

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    I tried to create georgpi's kernel according to his instructions, but I must have done something wrong, as it locked up and didn't reboot properly.

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  • Former Member
    0 Former Member over 10 years ago in reply to kjciszewski

    Which Pi version? Which linux  image? Error messages on boot? Some more info, please. Otherwise I'm not able to help :-[

    Best regards

    Georg

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    Georg Mill--do you have a fully patched version available for download that I could try?

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  • Former Member
    0 Former Member over 10 years ago in reply to kjciszewski

    https://blog.georgmill.de/wp-content/uploads/2015/02/linux-image-3.12.33-rt47-georg_3.12.33-rt47-georg-1_armhf.deb

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  • Former Member
    0 Former Member over 10 years ago in reply to Former Member

    But maybe you better should read this ->

    https://github.com/CirrusLogic/rpi-linux/wiki/Building-the-code

    It seems that the 3.18 kernel is ready for the cirrus audio card AND rpi2 now. (we had to wait a looooong, loooong time for it)

    Have fun.

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  • kjciszewski
    0 kjciszewski over 10 years ago in reply to Former Member

    So what exactly is https://blog.georgmill.de/wp-content/uploads/2015/02/linux-image-3.12.33-rt47-georg_3.12.33-rt47-georg-1_armhf.deb?

     

     

     

    What do I do with it:

     

    (1) put it on an SD card and use it to boot a model B?

     

    (2) other?

     

    I'm not very Linux savvy. 

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  • Former Member
    0 Former Member over 10 years ago in reply to kjciszewski

    Head over to https://blog.georgmill.de/2015/02/18/update-for-wolfson-audio-card-on-raspberry-pi/ and following his instructions should get you up and running.

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