Supported modes are listed in/sys/power/state
/sys/power/state
TQMa6ULx
The wakeup capability for the Console UART must be enabled first, to do so please apply the following
echo enabled > /sys/class/tty/ttymxc0/power/wakeup
To wakeup the device again from the power mode, send a caracter over the console UART.
TQMa6x
echo enabled > /sys/class/tty/ttymxc1/power/wakeup
TQMa7x
echo enabled > /sys/class/tty/ttymxc5/power/wakeup
to activate one of the supported power modes the mode has to be written into the /sys/power/state file
echo <power mode> > /sys/power/state
e.g. for mode mem
echo mem > /sys/power/state