MTD on intel 28F320B3 flash memory

[Nicolas Pitre]

On Fri, 17 Nov 2000, David Woodhouse wrote:

>
> mhill at bustech.com said:
> >  The 28F320B3 is a BOOT BLOCK flash part.  It contains Eight 8K
> > regions and 63 64K regions.  The CFI code assumes that all regions are
> > of the same size. I am currently using this part in a design.  To get
> > around this problem, I changed the CFI code to treat the 8K regions as
> > a single 64K region.
>
> I think that's the correct way do do things. I don't think the MTD layer
> needs to handle variable erase sizes within a single MTD partition. Either
> your CFI driver registers a single device with 64K erasesize, or it
> registers two devices, one with 8K erasesize and the remainder with 64K
> erasesize.

But then you have problem with concurent access to the chip... unless the
code is tweaked so both mtd devices share the same spinlock and wq.


Nicolas



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