NAND on MV78100

[Nils Faerber <nils.faerber@kernelconcepts.de>]

Hi!
I am currently working on board support for a Marvell MV78100 based
board. The MV78100 uses the same Orion SOC components as e.g. the
Kirkwood which is quite well supported from OpenRD and SheevaPlug.

After some struggling I got the Orion NAND driver working, it detects
the NAND chip properly (512MB) and assigns a partition. Everything seems
OK so far.

But when I read from the device, e.g. just by "cat /dev/mtdblock1 | wc
-c" it starts to fail with "uncorrectable error" after exactly 1MB
(1024*1024).

This seems pretty strange to me and I have no real idea where to look
for the problem. I have the Orion NAND driver working cleanly with the
very same kernel version on a Kirkwood based board without problems.

Any hint on where to look would be *very* much appreciated ;)

Thanks!

Cheers
  nils

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