For specific functionalities such IPU or VPU you may need to have a look at Freescale / NXP forum.
We (FEDEVEL) designed the hardware, VOIPAC helped to port Linux (you can find more information here: http://wiki.voipac.com/xwiki/bin/view/imx6+openrex/
). We have tested the peripherals ( http://www.imx6rex.com/open-rex/soft...x-peripherals/
), but we have not created any specific applications for OpenRex.
If you need to implement something specific, the best is to search for "iMX6 your_application", find out how other people did it on different boards and that could help you to figure out how to do it on OpenRex. I hope this helps.