While Debian 8 is now available since two months for RK3288 based devices like the MiQi from mqmaker the whole firmware still needs some integration cycles to get the most out of the hardware. Kodi 16.1 already runs on this devices and video rendering is already hardware accelerated in Debian 8 via glamor but it can not offer hardware acceleration for video decoding.
[video] Support Rockchip's VAAPI hardware decoding by wzyy2 · Pull Request #10684 · xbmc/xbmc · GitHub
So if you have a RK3288 based device around get a kernel, a rootfs, build Kodi from github and see whats possible (find more details on the mqmaker forum).e.g. a TV box like the UT3 models from Ugoos will do: www.bitkistl.com: Ugoos UT3 devices with firmware from mqmaker
It should be possible to play FullHD 1080p H.264 videos at about 2 Watts of overall device power consumption.
www.bitkistl.com: Kodi 17 on RK3288 needs testers