Micron NAND support in linux MTD
Ricard Wanderlof
ricard.wanderlof at axis.com
Mon Jan 21 05:06:40 EST 2008
On Mon, 21 Jan 2008, llandre wrote:
> if JFFS2/MTD check first page only. Datasheet says:
>
> "The factory identifies invalid blocks before shipping by programming
> data other than FFh (x8) or FFFFh (x16) into the first spare location
> (column address 2,048 for x8 devices, or 1,024 for x16 devices) *of the
> first or second page of each bad block*."
The option of programming the second page is probably a last resort in
case the first page is so bad that it cannot be programmed at all, which I
would think is most unlikely.
/Ricard
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