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AM3359 Sleep / Power Savings
Added by Brian Compter over 11 years ago
Is there a way to enter a low power state in the AM3359?
I've been attempting different variations on the following:
echo "mem" > /sys/power/class
...but it does not appear to do anything. The linux configuration seems to have it enabled.
#- Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_PM_SLEEP=y
CONFIG_PM_RUNTIME=y
CONFIG_PM=y - CONFIG_PM_DEBUG is not set
- CONFIG_APM_EMULATION is not set
CONFIG_ARCH_HAS_OPP=y
CONFIG_PM_OPP=y
CONFIG_PM_CLK=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_NET=y
Thanks,
Brian
Replies (2)
RE: AM3359 Sleep / Power Savings - Added by Jonathan Cormier over 11 years ago
What version of the kernel are you running?
This might be of some interest.
http://processors.wiki.ti.com/index.php/AM335x_Power_Management_Standby_User%27s_Guide
Our current 3.2 kernel is based off of http://processors.wiki.ti.com/index.php/AM335x-PSP_04.06.00.07_Release_Notes which claims it supports low power modes. We have not done any testing with this feature. http://support.criticallink.com/gitweb/?p=linux-mityarm-335x.git;a=shortlog;h=refs/heads/mityarm-linux-v3.2
This version of the kernel may contain some bugs.
-Jonathan
RE: AM3359 Sleep / Power Savings - Added by Brian Compter over 11 years ago
We are currently using the 3.1 kernel from the critical link git.
Thanks for the info!
