From: Sylvain Munaut <tnt@246tNt•com>
To: Domen Puncer <domen.puncer@telargo•com>
Cc: linuxppc-embedded@ozlabs•org
Subject: Re: [RFC] lite5200b low power mode
Date: Fri, 22 Dec 2006 12:10:31 +0100 [thread overview]
Message-ID: <458BBD27.1030207@246tNt.com> (raw)
In-Reply-To: <20061222105404.GC2481@moe.telargo.com>
Domen Puncer wrote:
> Hi!
>
> I have managed to implement low power mode... well, to some
> degree, at least.
>
> Short description:
> patch u-boot, it's the return from wakeup code. pretty clean.
> address is saved at 0x0 (0xc000_0000)
> patch linux with PM-platform_bus-and-late_suspend-early_resume.patch
> didn't investigate too much, but it seems to broke mine.
> patch linux with lite5200b_low_power.patch
> ugly, with debugging, hacks and whatever
>
> Boot Linux and 'echo mem > /sys/power/state'.
> It won't work on PCI, possibly other devices, PSC0 and FEC seem
> to work ok for me.
>
> It seems to work reliably (checksums match, so ram was in self-refresh)
> when called from boot scripts, but not so when from console prompt.
>
>
> If someone's interested (or maybe wants to play with this during
> holiday? ;-) ), more info follow:
>
>
Well, I'll have a look, that looks interesting ;)
Sylvain
next prev parent reply other threads:[~2006-12-22 11:12 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-22 10:54 [RFC] lite5200b low power mode Domen Puncer
2006-12-22 11:10 ` Sylvain Munaut [this message]
2007-01-23 9:33 ` [RFC PATCHES] lite5200b low power mode works Domen Puncer
2007-02-19 7:21 ` Domen Puncer
2007-02-19 10:15 ` Sylvain Munaut
2007-02-19 11:00 ` Domen Puncer
2007-02-19 11:01 ` Sylvain Munaut
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