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Date:	Thu, 23 Feb 2012 10:48:23 -0800
From:	Jesse Barnes <>
To:	"Hao, Xudong" <>
Cc:	"" <>,
	"" <>,
	"" <>,
	"Kay, Allen M" <>,
	"Zhang, Xiantao" <>
Subject: Re: [PATCH] Quirk for IVB graphics FLR errata

On Mon, 20 Feb 2012 02:27:25 +0000
"Hao, Xudong" <> wrote:

> For IvyBridge Mobile platform, a system hang may occur if a FLR(Function Level Reset) is asserted to internal graphics.
> This quirk patch is workaround for the IVB FLR errata issue.

Can you name the magic constants and offsets and document what the FLR
quirk is actually trying to do?  IIRC it had something to do with
waiting for the PCH acknowledge for the display portion of the reset...

Jesse Barnes, Intel Open Source Technology Center

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