AnsweredAssumed Answered

Low power mode support in 3.10.9 kernel

Question asked by Krishnan P on Feb 7, 2014
Latest reply on Feb 7, 2014 by Anson Huang

Hello,

 

I need to enable power saving mode on my i.MX6 Solo based board. The board used same  configuration  of sabrelite  with additional PMIC (PF0100  as pmic).

All I need is to  switch the device  to STANDBY mode based on a GPIO interrupt (looks like mem mode is not supported by the kernel)

 

These are the power state modes supported in my board.

root@imx6qsabrelite:/# cat /sys/power/state

freeze standby mem

 

I am also able to make  switch  board to STOP mode by  below command.

 

root@imx6qsabrelite:~# echo standby > /sys/power/state

PM: Syncing filesystems ... done.

Freezing user space processes ... (elapsed 0.01 seconds) done.

...

...

...

PM: Calling sched_clock_suspend+0x0/0x2c

PM: Calling fw_suspend+0x0/0x24

PM: Calling cpufreq_bp_suspend+0x0/0xc4

PM: Calling cpu_pm_suspend+0x0/0x20

 

How do I configure a GPIO  as the wake up source?

Appreciate your pointers...

 

Regards,

Krishnan.

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