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Date: Tue, 18 Dec 2007 16:39:01 +0100
From: Nicolas Ferre <nicolas.ferre@atmel.com>
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To: Duke <ezbonites@gmail.com>
Subject: Re: SPI Flash
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Duke :
> Hi all,
> Has anyone use ST's SPI flash and Atmels SPI DataFlash suscessfully?

Atmel DataFlash are working on Linux with this configuration in your 
.config :
CONFIG_MTD_DATAFLASH=y

> How does the interface look from userspace? Is it still an mtdblockX
> device or is it a spi device node?

It is seen as a mtd device :
# cat /proc/mtd
dev:    size   erasesize  name
[..]
mtd2: 00840000 00000420 "spi0.0-AT45DB642x"

So you can mount is using mtdblockx interface.

Regards,
-- 
Nicolas Ferre