Franklin/Steve/Bin,
I am using am335x-evm-sdk-src-07.00.00.00.tar.gz, board-support/linux-3.12.10-ti2013.12.01, when I use the following command to put processor into sleep mode,
echo mem > sys/power/state
[ 1464.928314] PM: Syncing filesystems ... done.
[ 1464.933605] Freezing user space processes ... (elapsed 0.001 seconds) done.
[ 1464.941695] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 1464.950234] Suspending console(s) (use no_console_suspend to debug)
When we measured the voltages.
The first issue is that PWR_EN pin is not going low.
The unit should go to Deep Sleep mode with VDD_CORE and VDD_MPU dropping to 0.9V
So the second issue is VDD_MPU voltage does not drop; it stays at 1.1V.
The current draw changes only by 100mA to 120mA.
Could you give me any clue?
Thank you!
desmond
