From: andy@warmcat.com (Andy Green)
To: linux-arm-kernel@lists.infradead.org
Subject: iMX31 power management
Date: Mon, 30 Aug 2010 14:56:28 +0100 [thread overview]
Message-ID: <4C7BB88C.1010202@warmcat.com> (raw)
In-Reply-To: <201008301444.21510.thomas.nemeth@betatech.fr>
On 08/30/10 13:44, Somebody in the thread at some point said:
Hi -
> I'm currently struggling trying to make suspend to RAM work for the
> iMX31 processor. As the pm functions were not implemented, I added
> a pretty straightforward pm "driver".
>
> It works to a point. The processor seems really sleeping. But where
> the heck is Prince Charming ? It does not want to wakeup else :( I
> can't make the DOZE mode, State Retention mode and Deep Sleep mode
> to work. Does anybody know how ?
>
> I added in attachment the code I adapted from 2.6.22 so that it
> integrates better with current kernels.
I ported this similar stuff from the Freescale tree to 2.6.32 last
December, it sleeps and wakes fine (using stop clock) on that txtr board
since then.
http://git.warmcat.com/cgi-bin/cgit/txtr-kernel/commit/?h=txtr-tracking&id=34685e9c378c865885ad6a8f2fc06fc36ad48482
There was no enable_irq_wake(); platform support at that time so I guess
maybe there is now and you need to make sure your wake interrupts are
marked as wake sources?
-Andy
next prev parent reply other threads:[~2010-08-30 13:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-30 12:44 iMX31 power management Thomas Nemeth
2010-08-30 13:56 ` Andy Green [this message]
2010-08-30 14:41 ` Thomas Nemeth
2010-08-30 15:05 ` Andy Green
2010-08-30 15:25 ` Thomas Nemeth
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