2008-07-08 10:59:00     standby state for blackfin 537

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2008-07-08 10:59:00     standby state for blackfin 537

pengcheng liu (UNITED STATES)

Message: 58489   

 

Hi, guys

 

I am trying to put the blackfin board to standby state for saving power, when I follow the

 

website instruction :

 

http://docs.blackfin.uclinux.org/doku.php?id=power_management_support

 

after I did this command

 

root:~> echo 'standby' > /sys/power/state

 

I see the this coming up in termial:

 

root:~> echo 'standby' > /sys/power/state

Stopping tasks: ========|

Suspending console(s)

gpio: Possible Conflict with Peripheral usage and GPIO 2 detected!

 

Restarting tasks... done

 

 

What does this mean? Is it mean bf537 has been put into standby state or it failed?

 

thanks in advance

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2008-07-08 15:41:47     Re: standby state for blackfin 537

Robin Getz (UNITED STATES)

Message: 58492   

 

Pengcheng:

 

My understanding is that it tried to go to sleep, but you defined a wakeup source (GPIO2) that a driver is currently using - so the gpio subsystem will not let you go into the standby state.

 

-Robin

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2008-07-09 09:49:51     Re: standby state for blackfin 537

pengcheng liu (UNITED STATES)

Message: 58549   

 

Thanks

 

I solved the problem by uncheck the option in GPIO wakeup menu!

 

pengcheng

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