From: "Gupta, Pekon" <pe...@ti.com>
[Change v1 -> v2]
added [PATCH 3/4] and [PATCH 4/4]
[PATCH 1/4]: clean-up and optimization for supported ECC schemes.
[PATCH 2/4]: add separate DT options each supported ECC scheme.
[PATCH 3/4]: update BCH4 ECC implementation (using ELM or using lib/bch.h)
[PATCH 4/4]: update DT attribute for ti,nand-ecc-opt
After this patch series, omap2-nand driver will supports following ECC schemes:
+---------------------------------------+---------------+---------------+
| ECC scheme |ECC calculation|Error detection|
+---------------------------------------+---------------+---------------+
|OMAP_ECC_HAMMING_CODE_DEFAULT |S/W |S/W |
|OMAP_ECC_HAMMING_CODE_HW |H/W (GPMC) |S/W |
|OMAP_ECC_HAMMING_CODE_HW_ROMCODE |H/W (GPMC) |S/W |
+---------------------------------------+---------------+---------------+
|OMAP_ECC_BCH4_CODE_HW_DETECTION_SW |H/W (GPMC) |S/W (lib/bch.h)|
|OMAP_ECC_BCH4_CODE_HW |H/W (GPMC) |H/W (ELM) |
+---------------------------------------+---------------+---------------+
|OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |H/W (GPMC) |S/W (lib/bch.h)|
|OMAP_ECC_BCH8_CODE_HW |H/W (GPMC) |H/W (ELM) |
+---------------------------------------+---------------+---------------+
- Selection of OMAP_ECC_BCHx_CODE_HW_DETECTION_SW requires,
Kconfig: CONFIG_MTD_NAND_ECC_BCH: enables S/W based BCH ECC algorithm.
- Selection of OMAP_ECC_BCHx_CODE_HW requires,
Kconfig: CONFIG_MTD_NAND_OMAP_BCH: enables ELM H/W module.
Gupta, Pekon (4):
mtd:nand:omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in
device_probe
ARM: OMAP2+: cleaned-up DT support of various ECC schemes
mtd:nand:omap2: updated support for BCH4 ECC scheme
ARM: OMAP2+: updated ECC scheme attributes for omap2-nand DT
.../devicetree/bindings/mtd/gpmc-nand.txt | 52 ++-
arch/arm/boot/dts/am335x-evm.dts | 2 +-
arch/arm/mach-omap2/gpmc.c | 17 +-
drivers/mtd/nand/Kconfig | 1 -
drivers/mtd/nand/omap2.c | 413 +++++++++------------
include/linux/platform_data/elm.h | 4 +
include/linux/platform_data/mtd-nand-omap2.h | 22 +-
7 files changed, 253 insertions(+), 258 deletions(-)
--
1.8.1
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