Re: linux-omap-pm troubles on Gumstix Overo

[Kevin Hilman <khilman@deeprootsystems.com>]

Kevin Hilman <khilman@deeprootsystems.com> writes:

> Peter Tseng <tsenpet09@gmail.com> writes:

[...]

>> 4) Suspend to memory (echo mem > /sys/power/state) works now, but when I
>> wake up the board (via a keypress), I am no longer able to type anything
>> at the prompt. Any clue about this one?
>
> Indeed, I was able to reproduce this as well and seems to be a new
> regression in the PM branch.  I see the same on omap3evm and n900 now
> too.
>
> If you enable the UART timeouts + sleep_while_idle, you should avoid
> this problem while I try and figure out what's going on:
>
> echo 5 > /sys/devices/platform/serial8250.0/sleep_timeout 
> echo 5 > /sys/devices/platform/serial8250.1/sleep_timeout 
> echo 5 > /sys/devices/platform/serial8250.2/sleep_timeout 
> echo 1 > /debug/pm_debug/sleep_while_idle  
>

Just pushed a new PM branch with a fix for this problem.

Details in my recent reply to the thread 
'OMAP3: Serial: Improved sleep logic'

Kevin