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| author | Pekon Gupta <pekon@ti.com> | 2013-10-24 18:20:26 +0530 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2013-11-06 23:33:11 -0800 |
| commit | 90c9c955db75f4f85db1f6b4fe17fbc3bcd513b3 (patch) | |
| tree | 968b9b6c8cda4af911ea783005fa9f9ac402ad33 /drivers/mtd | |
| parent | 70ba6d71ddcde8aa5a6e2b7f616e77b4bb96b984 (diff) | |
| download | op-kernel-dev-90c9c955db75f4f85db1f6b4fe17fbc3bcd513b3.zip op-kernel-dev-90c9c955db75f4f85db1f6b4fe17fbc3bcd513b3.tar.gz | |
mtd: nand: omap: remove selection of BCH ecc-scheme via KConfig
With OMAP NAND driver updates, selection of ecc-scheme:
*DT enabled kernel*
depends on ti,nand-ecc-opt and ti,elm-id DT bindings.
*Non DT enabled kernel*
depends on elm_dev and ecc-scheme passed along with platform-data
from board file.
So, selection of ecc-scheme (BCH8 or BCH4) from KConfig can be removed
Signed-off-by: Pekon Gupta <pekon@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/Kconfig | 40 |
1 files changed, 6 insertions, 34 deletions
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index d885298..93ae6a6 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -96,43 +96,15 @@ config MTD_NAND_OMAP2 config MTD_NAND_OMAP_BCH depends on MTD_NAND && MTD_NAND_OMAP2 && ARCH_OMAP3 - tristate "Enable support for hardware BCH error correction" + tristate "Support hardware based BCH error correction" default n select BCH - select BCH_CONST_PARAMS help - Support for hardware BCH error correction. - -choice - prompt "BCH error correction capability" - depends on MTD_NAND_OMAP_BCH - -config MTD_NAND_OMAP_BCH8 - bool "8 bits / 512 bytes (recommended)" - help - Support correcting up to 8 bitflips per 512-byte block. - This will use 13 bytes of spare area per 512 bytes of page data. - This is the recommended mode, as 4-bit mode does not work - on some OMAP3 revisions, due to a hardware bug. - -config MTD_NAND_OMAP_BCH4 - bool "4 bits / 512 bytes" - help - Support correcting up to 4 bitflips per 512-byte block. - This will use 7 bytes of spare area per 512 bytes of page data. - Note that this mode does not work on some OMAP3 revisions, due to a - hardware bug. Please check your OMAP datasheet before selecting this - mode. - -endchoice - -if MTD_NAND_OMAP_BCH -config BCH_CONST_M - default 13 -config BCH_CONST_T - default 4 if MTD_NAND_OMAP_BCH4 - default 8 if MTD_NAND_OMAP_BCH8 -endif + This config enables the ELM hardware engine, which can be used to + locate and correct errors when using BCH ECC scheme. This offloads + the cpu from doing ECC error searching and correction. However some + legacy OMAP families like OMAP2xxx, OMAP3xxx do not have ELM engine + so they should not enable this config symbol. config MTD_NAND_IDS tristate |
