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Standby and power saving mode option in AM1808

Francis Kumar
Expert 1330 points 
Hi, 

In AM1808, I am Running below command from console to put my all peripherals(AM1808+DDR+FLASH+etc) in to sleep mode. I'm unable to wake up the processor 
with the help of touchscreen and matrix Keypad. Anyone knows how to bring the processor back? I am running my application using SD-Card filesystem.

root@am180x-evm:~# cat /sys/power/state 
mem
root@am180x-evm:~# 
root@am180x-evm:~# echo mem > /sys/power/state 
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.01 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
 
Using with this option want to save the power. how to save the power downmodes in mobile phones same i am expecting 
to be done it here.

Please any suggestions...
   
Thanks, 
Francis Kumar.B