From: Ron Madrid <ron_madrid@sbcglobal.net>
Date: Thu, 13 Nov 2008 10:42:10 -0800 (PST)
Subject: [U-Boot] [PATCH] mpc83xx: New board support SIMPC8313
Message-ID: <821333.7706.qm@web83504.mail.sp1.yahoo.com>
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> Use raw accessors and make sure that explicit barriers are used where 
> needed.

Is there somewhere that I can find information regarding when and where are the appropriate places are to use barriers?

Ron