From: "Philip, Avinash" <avinashphilip@ti.com>
To: dwmw2@infradead.org, artem.bityutskiy@linux.intel.com,
afzal@ti.com, tony@atomide.com,
broonie@opensource.wolfsonmicro.com, rmk+kernel@arm.linux.org.uk,
gregkh@linuxfoundation.org
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org,
nsekhar@ti.com, gururaja.hebbar@ti.com, ivan.djelic@parrot.com,
"Philip, Avinash" <avinashphilip@ti.com>
Subject: [PATCH v2 0/3] mtd: nand: OMAP: ELM error correction support for BCH ecc
Date: Wed, 31 Oct 2012 12:38:24 +0530 [thread overview]
Message-ID: <1351667307-447-1-git-send-email-avinashphilip@ti.com> (raw)
Support to use ELM as BCH 4 & 8 bit error correction module. Also performance
enhancement by adding single shot read_page and write_page functions for the
nand flashes with page size less than 4 KB.
ELM module can be used to correct errors reported by BCH 4, 8 & 16 bit
ECC scheme. For now only 4 & 8 bit support is added.
BCH 4 & 8 bit error detection support is already available in mainline
kernel and works with software error correction.
This series is based on [1] and tested with RFC: OMAP GPMC bindings
patch series
1. linux-next/20121030
Changes since v1:
- Erased page is identified by checking byte [13/7] in read
ecc. To filter out bit flips in OOB area, check 0 bits in
the byte greater than 4.
- GPMC ecc engine configuration moves to omap2.c NAND driver.
Philip, Avinash (3):
mtd: nand: omap2: Update nerrors using ecc.strength
mtd: devices: elm: Add support for ELM error correction
mtd: nand: omap2: Support for hardware BCH error correction
Documentation/devicetree/bindings/mtd/elm.txt | 18 +
drivers/mtd/devices/Makefile | 4 +-
drivers/mtd/devices/elm.c | 420 +++++++++++++++++++
drivers/mtd/nand/omap2.c | 542 +++++++++++++++++++++++--
include/linux/platform_data/elm.h | 54 +++
include/linux/platform_data/mtd-nand-omap2.h | 1 +
6 files changed, 997 insertions(+), 42 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mtd/elm.txt
create mode 100644 drivers/mtd/devices/elm.c
create mode 100644 include/linux/platform_data/elm.h
next reply other threads:[~2012-10-31 7:08 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-31 7:08 Philip, Avinash [this message]
2012-10-31 7:08 ` [PATCH v2 1/3] mtd: nand: omap2: Update nerrors using ecc.strength Philip, Avinash
2012-10-31 7:08 ` [PATCH v2 2/3] mtd: devices: elm: Add support for ELM error correction Philip, Avinash
2012-10-31 7:08 ` [PATCH v2 3/3] mtd: nand: omap2: Support for hardware BCH " Philip, Avinash
2012-11-30 12:28 ` Artem Bityutskiy
2012-12-04 13:16 ` Philip, Avinash
2012-11-15 11:22 ` [PATCH v2 0/3] mtd: nand: OMAP: ELM error correction support for BCH ecc Artem Bityutskiy
2012-11-19 12:44 ` Philip, Avinash
2012-11-21 7:01 ` Philip, Avinash
[not found] ` <518397C60809E147AF5323E0420B992E3E9EC70D-Er742YJ7I/eIQmiDNMet8wC/G2K4zDHf@public.gmane.org>
2012-11-22 10:43 ` Artem Bityutskiy
[not found] ` <1353581032.2701.34.camel-Bxnoe/o8FG+Ef9UqXRslZEEOCMrvLtNR@public.gmane.org>
2012-11-22 14:37 ` Philip, Avinash
2012-11-30 12:28 ` Artem Bityutskiy
2012-12-04 13:20 ` Philip, Avinash
2012-11-27 9:07 ` Philip, Avinash
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1351667307-447-1-git-send-email-avinashphilip@ti.com \
--to=avinashphilip@ti.com \
--cc=afzal@ti.com \
--cc=artem.bityutskiy@linux.intel.com \
--cc=broonie@opensource.wolfsonmicro.com \
--cc=devicetree-discuss@lists.ozlabs.org \
--cc=dwmw2@infradead.org \
--cc=gregkh@linuxfoundation.org \
--cc=gururaja.hebbar@ti.com \
--cc=ivan.djelic@parrot.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=nsekhar@ti.com \
--cc=rmk+kernel@arm.linux.org.uk \
--cc=tony@atomide.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).