Low power mode

[SteMMo33]

Hi all, i need to enter in the lower power mode with a Tinkerboard (Linaro - DietPi Linux).

So far, i recalled the 'hibernate' command, the board lower the power consumption, the video is powered down, but it is not enough. I wake up the board by a push button.

I'd like to enter in a deeper idle mode: how can i do it? Do I need to recompile the kernel or can I set up the board via command-line or C program?

Is it possible to power down the USB ports, so the USB devices do not consume til the wake up?

Thanks!