Hi,
In theory, we can enable remote wakeup on many remote-wakeup
capable devices, then system sleep may be brought out by these
devices.
I have not tried Oneiric kernel recently on Panda, but on mainline kernel
plus some TI's patch I can wakeup panda in system sleep by ttyO2
(uart3 per OMAP4 manual).
You can find the devices with remote capability by below:
find /sys/devices/platform/ -name wakeup
Just this command can enable remote wakeup(take uart.2 for example):
echo enabled >/sys/devices/platform/omap/omap_uart.2/power/wakeup
In fact, panda may support wakeup from 'user button'(gpio 121), but
it doesn't work now. Also, ehci/ohci ports should be as remote wakeup
source too, and TI guys are working on it.
So we don't need to disable system sleep now.
thanks,
--
Ming Lei
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https://bugs.launchpad.net/bugs/863314
Title:
Panda hangs in suspend
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