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From: "Stéphane Laroche" <stephane.laroche@colubris.com>
To: David Woodhouse <dwmw2@infradead.org>
Cc: mtd@infradead.org
Subject: Re: CFI problems with 32bit bus and 4 devices
Date: Wed, 10 Jan 2001 17:39:35 -0500	[thread overview]
Message-ID: <3A5CE4A7.AB29F73E@colubris.com> (raw)
In-Reply-To: Pine.LNX.4.30.0101102149450.1062-100000@imladris.demon.co.uk

David Woodhouse wrote:

> So - are x16 devices in x8 mode _really_ compatible with x8 devices if you
> shift the address lines over by one? Common sense would imply that's the
> case. Bitter experience would imply that the manufacturers have
> probably screwed it up in interesting ways.

The only difference between the 2 modes are the CFI addresses (you have to
multiply them by 2 in x8 mode).  So you cannot cover that in the map driver,
which doesn't know the difference between a CFI and a normal operation.

-Stephane




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  reply	other threads:[~2001-01-10 22:38 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-01-10 19:15 CFI problems with 32bit bus and 4 devices Stéphane Laroche
2001-01-10 20:13 ` Nicolas Pitre
2001-01-10 20:37 ` David Woodhouse
2001-01-10 21:06   ` Stéphane Laroche
2001-01-10 22:35     ` David Woodhouse
2001-01-10 21:37   ` Nicolas Pitre
2001-01-10 22:22     ` David Woodhouse
2001-01-10 22:39       ` Stéphane Laroche [this message]
2001-01-10 23:06         ` David Woodhouse
2001-01-11  0:21       ` Nicolas Pitre
2001-01-10 23:34 ` Alice Hennessy
2001-01-10 23:55   ` Alice Hennessy
  -- strict thread matches above, loose matches on Subject: below --
2001-01-10 22:45 Michael Thompson

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