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Wakeup code for RTC-only mode

Achim Kanert
Prodigy 20 points
Hi, we want to use the RTC only mode because the power cosumption is sleep must be below 20mA. I am able to bring the system in RTC-only mode via ALARM2 interrupt. I also can wake up via ext. signal and detect the case we are coming from RTC-only mode in bootloader. The RAM content seems to be OK after this. So I try to jump to the cpu_resume function in RAM and I can see that some code is executed but after this it hangs. Has anybody successfully implemented the return from RTC-only mode in Linux? Regards, Achim Kanert