Subject: Re: MTD devices in NetBSD
To: Garrett D'Amore <>
From: Simon Burge <>
List: tech-kern
Date: 03/23/2006 10:28:52
"Garrett D'Amore" wrote:

> Allen Briggs wrote:
> >   
> > You can also find systems where the devices are set up in parallel,
> > so two 8-bit devices live on a 16-bit bus (or 4 8-bit devices on
> > a 32-bit bus or 2 16-bit devices on a 32-bit bus, etc.) where one
> > device uses bit 0-7 and the other uses 8-15.  Something to keep in
> > mind, perhaps.
> >   
> Hmm... never run into that before.  For read it wouldn't matter, but it
> could have significant complications for write, because you've got to
> command each flash part separately.

FWIW, the Alchemy eval boards are set up this way (two 16-bit flash
parts set up on a 32-bit bus).  So you end up with what are effectively
128kB "sectors", even though the base parts have 64kB physical sectors.

Simon Burge                            <>
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