Sunil Urs

Hi, I am new to development on Orange Pi and as such new to the concept of overlays. For the application I want to run on Orange Pi, I need to disable all USB ports (host an OTG), bluetooth, HDMI and audio out. Is there a way to do it using overlays? Or can I use sunxi-pio utility for the same? I am using nightlu build of Debian Jessie with kernel 4.10.3 Appreciate any help. -Sunil