It seems that you have already experience with Nelson.
The Nelson's image for debian8 have a 4.0x kernel and:
- graphics not working
- wifi not working
- anything else except console in screen and uart are also not working.
- no firmware for mipi csi (ov5640)
- it seems that another equipment for wandboard such as LCD is also not supported
Why did you do that? All thess actions from Nelson is just a waste of time. You must do for community a real working image with such things that have Linaro image on your site.
Why did you public the image with unnofficial and unsuppported kernel 4.0x? There is no even such on your github.
You must do such things with your github kernel such as 3.14 and hire a real embedded engineer to support the community.
I want you to public a real working debian8 image with 3.14 kernel on them.
I also have Radxa board and definitely working debian8 called Rabian on it. Now I want to do that with wandboard too.