[PATCH v2 0/3] mtd: nand: OMAP: ELM error correction support for BCH ecc
Philip, Avinash
avinashphilip at ti.com
Wed Oct 31 03:08:24 EDT 2012
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
More information about the linux-mtd
mailing list