From: Sascha Hauer <s.hauer@pengutronix.de>
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 2/3] mtd: add dataflash support
Date: Mon, 15 Oct 2012 09:08:10 +0200 [thread overview]
Message-ID: <20121015070810.GH27665@pengutronix.de> (raw)
In-Reply-To: <1350247764-18132-2-git-send-email-plagnioj@jcrosoft.com>
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?
Sascha
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next prev parent reply other threads:[~2012-10-15 7:08 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 [this message]
2012-10-15 10:24 ` Jean-Christophe PLAGNIOL-VILLARD
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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