From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 5 Dec 2013 13:32:42 -0800
From: Brian Norris <computersforpeace@gmail.com>
To: Arnaud Ebalard <arno@natisbad.org>
Subject: Re: [PATCH v5 00/14] Armada 370/XP NAND support
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Cc: Lior Amsalem <alior@marvell.com>,
 Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
 Jason Cooper <jason@lakedaemon.net>, linux-mtd@lists.infradead.org,
 Ezequiel Garcia <ezequiel.garcia@free-electrons.com>,
 Gregory Clement <gregory.clement@free-electrons.com>,
 linux-arm-kernel@lists.infradead.org
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On Wed, Dec 04, 2013 at 09:48:04PM +0100, Arnaud Ebalard wrote:
> Now, I am starting to wonder if nandwrite does not try and do something
> smart depending on the content of the file.

nandwrite does not do any data-dependent operations. It only checks the
size of the file to verify against MTD alignment restrictions, but
otherwise, it is simply a dump page-at-a-time programmer.

However, there are other characteristics which do differentiate it from
dd, so it's not surprising if nandwrite can uncover different code
behaviors than dd.

(BTW, I wouldn't recommend dd for NAND programming. It may be useful for
certain debugging purposes, but it ignore bad blocks and is generally
dangerous to use for any regular purposes.)

Brian