Re: [PATCH 00/22 take 3] UBI: Unsorted Block Images

[David Woodhouse]

On Mon, 2007-03-26 at 03:04 +0200, JÃrn Engel wrote:
> That limitation stems from ECC and ECC is done in software.  Currently
> everyone and his dog is doing ECC in chunks of 256 bytes on NAND.  So
> your minimum write size is 256 bytes _if you care about ECC_.  If you
> don't care, you can write single bits on NAND, just as you can on NOR.

No, on NAND flash it's a limitation of the hardware. The number of write
cycles you can perform to a given page is limited. Exceed it and the
contents of that page become undefined due to leakage, until you next
erase it. 

-- 
dwmw2

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