i don't understand the reference to 4.5.x kernel. what is that?
It might be possible to get a non graphics Debian/Linux rootfs to work based on the CAF 3.10, but :
- it will probably require a couple of patches, especially for the kernel config options, you might be able to reuse/customize the file kernel/configs/distro.conf from our release as a starting point
- the Linux display stack relies on DRM/KMS driver which is completely missing in the CAF 3.10 , so you won't get any display/graphics.
- for audio and connectivity you will likely need to customize/patches as well to make sure that standard Linux API/user space will work.
I don't have a 'recipe' to do it, since we have never done that on db410c, but we did it in the past on other platforms.
If you have concrete questions/issues, we can try to help, but your first message has too few information to provide helpful answers.