using MEMWRITEOOB problem in NAND flash device

Fri Apr 18 12:14:06 EDT 2003

On Friday 18 April 2003 17:06, Paul Wong wrote:
>  Hi All,
>      I want to restore the oob[5] using ioctl(..,MEMWRITEOOB,..) in NAND
>  flash device, but it is failure to write anything. Is any protected
>  condition in NAND.C?
You _CANNOT_ write a 0 bit to 1 on a FLASH chip. This works the other way 
round. If you want to restore your block, remove the santity check in erase 
function of nand.c.

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Thomas
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