Hi,all
I find a strange problem that when our board entered into sleep,from the log ,we found that once the board "sabresd_suspend_enter" then "sabresd_suspend_exit",why? log is following:
[ 131.386809] ----suspend_enter----
[ 131.387652] ---------max_timeout:0-----------
[ 131.387658] power_suspend_late return 0
[ 131.387668] PM: late suspend of devices complete after 0.847 msecs
[ 131.387675] Disabling non-boot CPUs ...
[ 131.388498] CPU1: shutdown
[ 131.389154] ----syscore_suspend----
[ 131.389292] -----sabresd_suspend_enter--------
[ 131.389589] -----sabresd_suspend_exit--------
[ 131.389833] Enabling non-boot CPUs ...
[ 131.410766] CPU1: Booted secondary processor
[ 131.410782] Calibrating delay loop (skipped) already calibrated this CPU
[ 131.411156] i.MXC CPU frequency driver
[ 131.411203] CPU1 is up
[ 131.411800] PM: early resume of devices complete after 0.586 msecs
And this log has entered into suspend. You can see maybe it has exit suspend ? why?
Thanks~
Hi tony
processor will exit from low power mode if there is
enabled interrupt from some peripheral.
You can try to find it probably disabling some of them.
Best regards
igor
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