This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Power Management on DM-814x EVM??

Hello,

I am trying to set the dm-814x-evm into powersaving mode.

I followed the instructions I found here:
http://processors.wiki.ti.com/index.php/DM814x_AM387x_PM_Suspend_resume_overview
So, suspend should be well supported and deepsleep not really.

I have build a kernel with the options told there, like "suspend to ram",....

BUT, when using the given commandos for standby:
echo -n "mem" > /sys/power/state        -> nothing happens
cat /sys/power/state                                -> nothing written in /sys/power/state

Commandos for DeepSleep:
mount -t debugfs debugfs /sys/kernel/debug                                               -> it has been mounted correctly
echo 1 > /sys/kernel/debug/pm_debug/turnoff_idle_powerdomains      -> nonexistent directory
or
echo 1 > /sys/kernel/debug/pm_debug/enable_deep_sleep                   -> nonexistent directory

SO, any ideas how to set it into standby mode and then wake it up by UART, or to enable DeepSleep?
I really thank you for any ideas!

Have a nice day!
Sebastian