From: David Woodhouse <dwmw2@infradead.org>
To: Jonas Holmberg <jonas.holmberg@axis.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: chip drivers
Date: Fri, 01 Feb 2002 15:04:39 +0000 [thread overview]
Message-ID: <8523.1012575879@redhat.com> (raw)
In-Reply-To: <1012574966.21595.10.camel@pcjonashg>
jonas.holmberg@axis.com said:
> But how would I be able to detect all chips if I had a configuration
> like this:
> 0x00000000 - 0x003FFFFF 4MiB CFI chip
> 0x00400000 - 0x005FFFFF 2MiB jedec only chip
> 0x00600000 - 0x009FFFFF 4MiB CFI chip
You'd need three maps, three probe calls. Although I suppose you could have
a single map driver for the first and last chips where the access calls do
something like:
return *(volatile __u32 *) (addr + (addr>0x400000?0x200000:0));
You probably don't want that though. Register them as three separate chips
and then use the partition code that's been fixed to let you combine ranges
of separate devices into one 'partition' rather than just split devices up.
--
dwmw2
next prev parent reply other threads:[~2002-02-01 14:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-01 11:06 chip drivers Jonas Holmberg
2002-02-01 13:34 ` David Woodhouse
2002-02-01 13:47 ` Jonas Holmberg
2002-02-01 13:49 ` David Woodhouse
2002-02-01 14:49 ` Jonas Holmberg
2002-02-01 15:04 ` David Woodhouse [this message]
2002-02-04 10:52 ` Patch for jedec_probe Jonas Holmberg
2002-02-05 3:06 ` David Woodhouse
2002-02-04 15:47 ` chip drivers Jonas Holmberg
2002-02-05 16:48 ` Jonas Holmberg
2002-02-06 13:49 ` Jonas Holmberg
2002-02-06 14:22 ` David Woodhouse
[not found] <Pine.LNX.4.44.0202070041040.1927-100000@lapdancer.baythorne.internal>
2002-02-07 12:20 ` Jonas Holmberg
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