Bringing i.MX6 out of Suspend

[PaulDeMetrotion]

I have put my i.MX6 system into suspend mode. Now how do I bring it out of suspend mode? the keyboard and mouse aren't working and I do not have a power switch. Is there some configuration required to use a USB device to bring the CPU out of suspend? I am developing with a custom device based on the i.MX6Q.

[AnsonHuang · Accepted solution]

If you have a debug UART connected, you can try enable UART wakeup by "echo enabled > /sys/devices/platform/imx-uart.0/tty/ttymxc0/power/wakeup" first, then enter suspend, you can input any key from your debug UART's windows, system will be wakeup by UART.

Or, you can try using RTC alarm to wake up system, "echo +3 > /sys/class/rtc/rtc0/wakealarm", it means system will auto 

resume 3 seconds after suspend.