redpesk OS

By default, the providing BSP does not control power consumption as all possibility is given to the user.
Knowing the use case, the environment, the connected equipments (or not) on the board is user dependent.
It is difficult to find a general case where the power consumption will be minimal and not block any other users.

However, putting cpu governor into "powersave" or "ondemand" could be done without affecting any user.
But turning off some component is more depending on final use case of the board (within the customer project). This will not be done by default into the BSP. Nevertheless, some "good" practice could be written into the redpesk documentation to provides ideas on how to disable some "useless" components. This is the same for Linux sleep mode.

Sleep mode into Linux: https://www.kernel.org/doc/html/v5.10/admin-guide/pm/sleep-states.html

Get available modes : cat /sys/power/state
Specify a device to be able to wake the CPU on external event : echo enabled > /sys/devices/platform/soc@0/30800000.bus/30890000.serial/tty/ttymxc1/power/wakeup
Set a specific mode : echo freeze > /sys/power/state
Use ttymxc1 to wake up the board

Be careful. The sleep modes of Linux are hardware dependent and need to be supported by the board maker. If not supported, board could put into a strange mode and behave in an uncontrolled manner. This not redpesk dependent. This BSP vendor dependent.

Some tips are now available on the redpesk documentation here : https://docs.redpesk.bzh/docs/en/master/redpesk-os/boards/docs/boards/useful-cmd-lines.html#power-saving-management