RFC: [PATCH] MTD OneNAND: multiblock erase support

[Mika Korhonen]

Hi,

I wrote an initial support for OneNAND multiblock erase feature.  When
done in maximum 64 eraseblock batches multiblock erase is up to 30x
faster than block-by-block erase (not including erase verify, though).

However, I only had possibility to test this with an OMAP board, so I
don't know if e.g. the default onenand_wait needs adjustment. Also for
Flex-OneNAND the support goes off. Does Flex even have mb erase?

What do you think?

br,
Mika
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