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Re: [ts-7000] Re: SD Flash memory questions for 7300.

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Subject: Re: [ts-7000] Re: SD Flash memory questions for 7300.
From: Paulo Marques <>
Date: Wed, 06 Dec 2006 14:29:45 +0000
sipnj wrote:
> Sometimes the simple things escape me. 
> 
> I am asking if anyone has converted their SD card to JFFS2 designed
> for embedded systems. There may be a down side in using it and wanted
> to know.

JFFS2 is designed to be used with raw flash devices (mtd device). It 
depends on having "extra bytes" per sector to keep metadata, does wear 
leveling, etc.

An SD card already contains a controller that makes it appear as a 
generic block device with 512 byte sectors and does wear leveling 
internally. So it should be used as a regular block device, and not a 
raw flash device.

-- 
Paulo Marques - www.grupopie.com

"The face of a child can say it all, especially the
mouth part of the face."


 
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