linux-kernel - Re: [PATCH] PCI: do not delay when changing power states on Geode

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Date:	Fri, 6 Jul 2007 11:05:18 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andres Salomon <dilinger@...ued.net>
Cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jordan Crouse <jordan.crouse@....com>,
	info-linux@...de.amd.com, gregkh@...e.de,
	linux-pci@...ey.karlin.mff.cuni.cz, tsylla@...il.com
Subject: Re: [PATCH] PCI: do not delay when changing power states on Geode

On Thu, 5 Jul 2007 22:13:51 -0400
Andres Salomon <dilinger@...ued.net> wrote:

> Geode hardware requires no delay when doing power transition for PCI;
> the board doesn't even have a real PCI bus.  Thanks to Tom Sylla for
> pointing this out.  We can save precious milliseconds when changing power
> states to D3hot by getting rid of this delay.
> 
> We do this as a PCI quirk.

NAK

These systems may have other components on them which require the proper
transition times and the CS5530 supports external real PCI devices.

Alan
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