Audio inputs broken on all Kernels for all Olimex IMX233 boards

[benbiles]

Hi,

The IMX233 boards audio inputs ( both line and mic ) have noise making it unusable on all available linux kernels. including official release 2.x and all 3.x kernels including when using this branch.

https://github.com/ITserve/imx23-audio

Therefore we can say Audio inputs are broken on this board?

Can anyone else confirm this?

[ehsan51]

I have the same problem with microphone! I didnt test the line-in though!
https://www.olimex.com/forum/index.php?topic=4106.msg17385#msg17385
I use IMX233-mini-wifi and arch-linux.

[ehsan51]

Try
"amixer sset "ADC" xx% cap" xx < 100, it helps me to reduce noise.

[ehsan51]

it helps to reduce the noise, but it was temporary. Sometimes it is clear , and sometimes it is noisy, sometimes it record nothing but "shshshhhhhh" sound!
Any help will be appreciate