hi,
I use ICS in beaglebone,But I found some pwoer suspen issue that:
when I do like:
130|root@android:/ # echo mem > /sys/power/state
[21091.518493] request_suspend_state: sleep (0->3) at 1085580608602 (2000-01-01 09:13:40.837482938 UTC)
root@android:/ # [21091.576049] PM: Syncing filesystems ... done.
[21091.582763] Freezing user space processes ... (elapsed 0.02 seconds) done.
[21091.611022] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
[21091.630889] Suspending console(s) (use no_console_suspend to debug)
But the CPU can't enter low power mode,as http://processors.wiki.ti.com/index.php/AM335x_Power_Management_User_guide said the trace should like:
root@arago /]# echo mem > /sys/power/state [ 8.774536] PM: Syncing filesystems ... done. [ 8.804199] Freezing user space processes ... (elapsed 0.01 seconds) done. [ 8.827575] Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done. [ 8.847717] Suspending console(s) (use no_console_suspend to debug) [ 8.868530] PM: suspend of devices complete after 12.542 msecs <-- Wake event using console (UART0) [ 8.870147] PM: late suspend of devices complete after 1.556 msecs [ 10.840209] GFX domain entered low power state [ 11.044891] PM: early resume of devices complete after 204.184 msecs [ 11.284027] PM: resume of devices complete after 238.709 msecs [ 11.317382] Successfully transitioned all domains to low power state [ 11.325012] Restarting tasks ... done
please help me.