First, I love this site and everyone here. Recently finished my RetroPie build. It’s great.
Now, would it be possible to make the Pi boot up from a usb controller, much like the USB Wake up from S3 feature or Power on by Keyboard feature in most BIOS?
If not, would mounting a switch to the GPIO pins to achieve the same purpose be that difficult? The reason I ask is I’d like to be able to boot the Pi back up without having to unplug the power and then plug it back in.