I'm running linux (ltib) on i.MX28 evk board. alsa libs & utils have installed. The output sound is very good quality. But I can't use microphone. I have found the same issue in freescale forum http://forums.freescale.com/t5/i-MX-Microprocessors/Microphone-on-i-MX28-evk/td-p/72283.
This is my sound cards information:
# cat /proc/asound/cards
0 [mxsevk ]: SGTL5000 - mxs-evk
1 [mxsevk_1 ]: mxs spdif - mxs-evk
mxs-evk (mxs spdif)
Does anyone can use microphone with this board??? If you have any ideas please share me. Thanks & Regards.