nand: oob question

Charles Manning manningc2 at
Tue Dec 9 19:38:48 EST 2003

On Wednesday 10 December 2003 08:40, Joshua Wise wrote:
> Hi all,
> I've been porting Linux to the iPAQ h1910. I'm having lots of issues
> mounting jffs2 partitions that I've traced down to there only being 16
> bytes of nand oob, not the 32 bytes that jffs2 seems to be expecting.
> Is my flash weird, or am I just dense?

Hopefully neither :-).

NAND typically has pages with 512bytes data + 16 bytes oob.  The newer 
(larger) stuff has 2kB data + 64bytes OOB per page.

Why do you think jffs2 wants 32bytes of OOB?

-- Charles

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