From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 2/3] mtd: add dataflash support
Date: Mon, 15 Oct 2012 12:24:24 +0200 [thread overview]
Message-ID: <20121015102424.GW13639@game.jcrosoft.org> (raw)
In-Reply-To: <20121015070810.GH27665@pengutronix.de>
On 09:08 Mon 15 Oct , Sascha Hauer wrote:
> On Sun, Oct 14, 2012 at 10:49:23PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > from linux 3.6
> >
> > Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
> > ---
> > drivers/mtd/devices/Kconfig | 18 +
> > drivers/mtd/devices/Makefile | 1 +
> > drivers/mtd/devices/mtd_dataflash.c | 882 +++++++++++++++++++++++++++++++++++
> > include/spi/flash.h | 2 +-
> > 4 files changed, 902 insertions(+), 1 deletion(-)
> > create mode 100644 drivers/mtd/devices/mtd_dataflash.c
> >
> > diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig
> > index e6d747c..e956921 100644
> > --- a/drivers/mtd/devices/Kconfig
> > +++ b/drivers/mtd/devices/Kconfig
> > @@ -1,6 +1,24 @@
> > menu "Self contained MTD devices"
> > depends on MTD!=n
> >
> > +config MTD_DATAFLASH
> > + tristate "Support for AT45xxx DataFlash"
> > + depends on SPI
> > + help
> > + This enables access to AT45xxx DataFlash chips, using SPI.
> > + Sometimes DataFlash chips are packaged inside MMC-format
> > + cards; at this writing, the MMC stack won't handle those.
> > +
> > +config MTD_DATAFLASH_WRITE_VERIFY
> > + bool "Verify DataFlash page writes"
> > + depends on MTD_DATAFLASH
> > + help
> > + This adds an extra check when data is written to the flash.
> > + It may help if you are verifying chip setup (timings etc) on
> > + your board. There is a rare possibility that even though the
> > + device thinks the write was successful, a bit could have been
> > + flipped accidentally due to device wear or something else.
> > +
>
> What about MTD_DATAFLASH_OTP?
the DATAFLASH_OTP need the MTD to have the OTP support
which we do not have yet
do I did not add it
Best Regards,
J.
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next prev parent reply other threads:[~2012-10-15 10:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-14 20:46 [PATCH 0/3] add mtd " Jean-Christophe PLAGNIOL-VILLARD
2012-10-14 20:49 ` [PATCH 1/3] import include/linux/math64.h Jean-Christophe PLAGNIOL-VILLARD
2012-10-14 20:49 ` [PATCH 2/3] mtd: add dataflash support Jean-Christophe PLAGNIOL-VILLARD
2012-10-15 7:08 ` Sascha Hauer
2012-10-15 10:24 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2012-10-14 20:49 ` [PATCH 3/3] usb-a9263: add spi " Jean-Christophe PLAGNIOL-VILLARD
2012-10-15 13:32 ` [PATCH 0/3] add mtd " Sascha Hauer
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