RK3328-SOM204

Software

You can schedule power-on event using alarm clock.

Set the alarm 1 minute in the future

 echo $(date '+%s' -d '+ 1 minutes') > /sys/class/rtc/rtc0/wakealarm

Now power-off the board and wait for the wake-up alarm:

 poweroff

Get sources:

 git clone https://github.com/rockchip-linux/rkdeveloptool

Install requirements:

 sudo apt-get install libudev-dev libusb-1.0-0-dev dh-autoreconf

Build rkdeveloptool

 cd rkdeveloptool
 autoreconf -i
 ./configure
 make

Put device into loader mode. Plug USB-mini cable, hold recovery button and press reset. Check the with:

 lsusb

You should see:

 Bus 002 Device 035: ID 2207:330a