From: Lee Revell <rlrevell@joe-job.com>
To: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: sleep / wake-up
Date: Sat, 10 Jun 2006 20:05:40 -0400 [thread overview]
Message-ID: <1149984341.14253.97.camel@mindpipe> (raw)
In-Reply-To: <Pine.LNX.4.60.0606110120270.16586@poirot.grange>
On Sun, 2006-06-11 at 01:38 +0200, Guennadi Liakhovetski wrote:
>
> Yes: "ACPI" - we are talking about a (embedded) PPC... But I thought
> you could "simulate" that without ACPI too. AFAIU, ACPI is the way
> hardware (motherboard / laptop) manufacturers tell you about system's
> configuration, including how to enter S3. In its absence suspending
> every (e.g., embedded) system you have to _know_ the hardware. E.g.,
> what do they do on Apple ppc laptops? You don't have ACPI there. Is
> there any generic system there or did they just study every new
> ppc-mac and handled it specially?
It seems that PPC Macs have a hardware PMU:
http://www.resexcellence.com/linux_icebox/01-31-02.shtml
And that some embedded devices handle this at the hardware level with no
OS support needed:
http://ozlabs.org/pipermail/linuxppc-dev/2001-February/010179.html
So AFAICT there's no standard like ACPI - each board does it
differently.
Lee
next prev parent reply other threads:[~2006-06-11 0:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-10 18:39 sleep / wake-up Guennadi Liakhovetski
2006-06-10 22:03 ` Jon Scully
2006-06-10 22:41 ` Guennadi Liakhovetski
2006-06-10 23:02 ` Lee Revell
2006-06-10 23:38 ` Guennadi Liakhovetski
2006-06-11 0:05 ` Lee Revell [this message]
2006-06-11 10:57 ` Guennadi Liakhovetski
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