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From: Kevin Hilman <khilman@deeprootsystems.com>
To: Peter Tseng <tsenpet09@gmail.com>
Cc: linux-omap@vger.kernel.org
Subject: Re: linux-omap-pm troubles on Gumstix Overo
Date: Thu, 08 Apr 2010 12:11:50 -0700	[thread overview]
Message-ID: <8763413gjt.fsf@deeprootsystems.com> (raw)
In-Reply-To: <87bpdt6f2e.fsf@deeprootsystems.com> (Kevin Hilman's message of "Thu\, 08 Apr 2010 10\:15\:37 -0700")

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

      reply	other threads:[~2010-04-08 19:18 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-04-07  3:12 linux-omap-pm troubles on Gumstix Overo Peter Tseng
2010-04-07 15:56 ` Kevin Hilman
2010-04-07 16:04   ` Kevin Hilman
2010-04-07 22:01   ` Kevin Hilman
2010-04-08  0:12     ` Peter Tseng
2010-04-08 17:15       ` Kevin Hilman
2010-04-08 19:11         ` Kevin Hilman [this message]

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