From: https://pyra-handheld.com/boards/threads/audio-driver-with-bounty.99429/post...
Here is an archived instance of the omappedia's page on ASoC and the TWL6040 codec driver:
https://web.archive.org/web/20181111114134/http://omappedia.org/wiki/Audio_D...
Tnx to fritata, NIkolaus