I am using an AT91AM9G20-EK Rev. B board, and trying to utilize the Wake Up button (BP2) on this board. This button is connected to the WKUP0 input on the AT91SAM9G20 processor.

I have added the configuration for the SHDW_MR register to the board-sam9g20ek.c following the code in the bard-sam9260ek.c

I am running the 2.6.30.2 kernel with the atmel and linux4sam patches. The configuration is such that PM and Slow clock are enabled. I tried the various pm_state settings to verify that the system would/should wake, and had success.

Setting the pm_test to [none}, and using the "echo mem > /sys/power/state", I see the system go into suspend to RAM mode.

But, on pressing the Wake Up button, nothing occurs. It would seem I am missing something in getting the system to wake up again.

Has someone got an AT91SAM9G20-EK board to wake from "sleep" or at the least, someone succeeded in getting an AT91SAM9260-EK board to wake from sleep?

Did you ever find a solution to this issue?