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Commit 90c9c955 authored by Pekon Gupta's avatar Pekon Gupta Committed by Brian Norris
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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: default avatarPekon Gupta <pekon@ti.com>
Tested-by: default avatarEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent 70ba6d71

drivers/mtd/nand/Kconfig

+6 −34
Original line number Diff line number Diff line
@@ -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