linux-kernel - Re: [PATCH 2/2] mtd: m25p80: Add support for CAT25xxx serial EEPROMs

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Message-ID: <20090922234016.GA1021@oksana.dev.rtsoft.ru>
Date:	Wed, 23 Sep 2009 03:40:16 +0400
From:	Anton Vorontsov <cbouatmailru@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Anton Vorontsov <avorontsov@...mvista.com>,
	dbrownell@...rs.sourceforge.net, dwmw2@...radead.org,
	dedekind1@...il.com, linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org
Subject: Re: [PATCH 2/2] mtd: m25p80: Add support for CAT25xxx serial
 EEPROMs

On Tue, Sep 22, 2009 at 04:25:48PM -0700, Andrew Morton wrote:
> On Wed, 19 Aug 2009 01:46:28 +0400
> Anton Vorontsov <avorontsov@...mvista.com> wrote:
> 
> > CAT25 chips (as manufactured by On Semiconductor, previously Catalyst
> > Semiconductor) are similar to the original M25Px0 chips, except:
> > 
> > - Address width can vary (1-2 bytes, in contrast to 3 bytes in M25P
> >   chips). So, implement convenient m25p_addr2cmd() and m25p_cmdsz()
> >   calls, and place address width information into flash_info struct;
> > 
> > - Page size can vary, therefore we shouldn't hardcode it, so get rid
> >   of FLASH_PAGESIZE definition, and place the page size information
> >   into flash_info struct;
> > 
> > - CAT25 EEPROMs don't need to be erased, so add NO_ERASE flag, and
> >   propagate it to the mtd subsystem.
> 
> This patch (still) doesn't know about the mx25l3205d, mx25l12805d and
> mx25l12855e devices.

Yes, support for these chips commited on Fri, 4 Sep 2009 08:40:27
+0000 (09:40 +0100). And the patch dated 19 Aug.

> I randomly did this:
> 
> ->	{ "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 256, 3, 0) },
> ->	{ "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 256, 3, 0) },
> 	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 256, 3, 0) },
> ->	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 256, 3, 0) },

Looks correct, thanks a lot.

-- 
Anton Vorontsov
email: cbouatmailru@...il.com
irc://irc.freenode.net/bd2
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