*changes in v5* This version of patch is tested on am335x-evm with x8 NAND device, and boots SPL and u-boot from NAND [PATCH 1/5] - re-added omap_read_page_bch(): needed proper sequence of while reading DATA and ECC from NAND page, so that calc_ecc generated from GPMC is understood by ELM. - added check to see if NAND OOB can accomodate ECC for entire page [PATCH 2/5] fixed device-width in GPMC_CONFIG1_X to support x16 devices [PATCH 3/5] code clean-up for OMAP_ECC_BCH8_CODE_HW_DETECTION_SW mode [PATCH 4/5] - fixed omap_correct_data_bch() for correcting bit-flips using ELM - code-cleanup + added omap_reverse_list() [PATCH 5/5] incorporated feedbacks from Peter Korsgaard jacmet@sunsite.dk
*changes in v4* [PATCH 1/5] - removed omap_read_page_bch(): chip->ecc.read_page uses default API nand_read_page_hwecc() in nand_base.c - updated tricorder.h: added new CONFIGS for ECCSCHEME & ONFI_DETECTION - converted printf("ECC-SCHEME") to debug("ECC-SCHEME") [PATCH 2/5] minor code clean-up [PATCH 3/5] <no update> [PATCH 4/5] <no update> [PATCH 5/5] updated README as per feedbacks from trini@ti.com
*changes in v3* [PATCH 1/5] (complete change) - ecc-scheme is selection is controller by s/w, not CONFIG_NAND_xx - added omap_select_ecc_scheme(), as common function to handle all ecc-scheme related configurations for both board_nand_init() & omap_nand_switch_ecc(). - removed un-used defines from asm/arch-am33xx/omap_gpmc.h - updated doc/REAME.nand [PATCH 2/5] removed un-used defines from asm/omap_gpmc.h [PATCH 3/5] removed omap_calculate_ecc_bch_sw() and omap_calculate_ecc() and merged their logic into omap_calculate_ecc_bch() [PATCH 4/5] updated return error-code in-case of invalid conditions [PATCH 5/5] (new) for board/ti/am335x/README
*changes in v2* - added documentation for CONFIG_NAND_OMAP_xx in doc/README.nand - added CONFIG_BCH along with CONFIG_NAND_OMAP_ECC_BCH8_CODE_HW_DETECTION_SW to include software library lib/bch.c - fixed board_nand_init() and omap_enable_hwecc()
*original v1* This patch series updates BCH8_ECC schemes in mtd/nand/omap_gpmc.c driver - adds scalability for higher ECC schemes in future. - removes CONFIG_AM335x and it makes it generic for all platforms. - optimizes read_data paths
Pekon Gupta (5): [PATCH 1/5] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform [PATCH 2/5] mtd: nand: omap: optimize chip->ecc.hwctl() for H/W ECC schemes [PATCH 3/5] mtd: nand: omap: optimize chip->ecc.calculate() for H/W ECC schemes [PATCH 4/5] mtd: nand: omap: optimized chip->ecc.correct() for H/W ECC schemes [PATCH 5/5] board/ti/am335x/README: update for NAND boot
arch/arm/include/asm/arch-am33xx/omap_gpmc.h | 48 +- arch/arm/include/asm/omap_gpmc.h | 7 - board/ti/am335x/README | 59 +- doc/README.nand | 13 + drivers/mtd/nand/omap_gpmc.c | 835 +++++++++++---------------- include/configs/am335x_evm.h | 2 + include/configs/tricorder.h | 2 + 7 files changed, 412 insertions(+), 554 deletions(-)