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From: David Woodhouse <dwmw2@infradead.org>
To: Mike Frysinger <vapier@gentoo.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: [PATCH] [MTD] [CHIPS] stm_flash: new ST PSD4256G compatible flash chip driver
Date: Sat, 19 Sep 2009 13:08:56 -0700	[thread overview]
Message-ID: <1253390936.6317.33.camel@macbook.infradead.org> (raw)
In-Reply-To: <1244890798-10908-1-git-send-email-vapier@gentoo.org>

On Sat, 2009-06-13 at 06:59 -0400, Mike Frysinger wrote:
> The ST PSD4256G Flash In-System Programming (ISP) part is a multifunction
> device.  Since all of the different pieces are memory mapped, this is a
> driver for the NOR flash component.  All the other pieces can use generic
> memory based drivers.  Unfortunately, this is not a CFI compliant part in
> any way, so we need a dedicated chip driver for it.

Hrm. This looks very similar to cfi_cmdset_0002.c, which we _do_ already
use with non-CFI-compliant parts. 

CFI is just the _probe_ method. We can probe chips using the JEDEC
method too, and that works just fine -- jedec_probe.c will "invoke" the
appropriate command set driver.

Can't you do the same?

-- 
David Woodhouse                            Open Source Technology Centre
David.Woodhouse@intel.com                              Intel Corporation

  reply	other threads:[~2009-09-19 20:08 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-13 10:59 [PATCH] [MTD] [CHIPS] stm_flash: new ST PSD4256G compatible flash chip driver Mike Frysinger
2009-09-19 20:08 ` David Woodhouse [this message]
2009-09-19 20:28   ` Mike Frysinger
2009-09-19 21:01     ` David Woodhouse
2009-09-22 23:05       ` Mike Frysinger
2009-09-22 23:20         ` David Woodhouse
2009-09-22 23:30           ` Mike Frysinger
2009-09-22 23:39             ` David Woodhouse
2009-09-23  4:49               ` [PATCH] mtd: jedec_probe: add PSD4256G6V id Mike Frysinger

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