CONFIG_MTD_NAND_OMAP_BCH: Support hardware based BCH error correction

General informations

The Linux kernel configuration item CONFIG_MTD_NAND_OMAP_BCH has multiple definitions:

Support hardware based BCH error correction found in drivers/mtd/nand/raw/Kconfig

The configuration item CONFIG_MTD_NAND_OMAP_BCH:

• prompt: Support hardware based BCH error correction
• type: bool
• depends on: CONFIG_MTD_NAND_OMAP2
• defined in drivers/mtd/nand/raw/Kconfig
• found in Linux kernels: 4.17–4.20, 5.0–5.19, 6.0–6.17, 6.18-rc+HEAD
• modules built: elm

Help text

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 this is optional for them.

Support hardware based BCH error correction found in drivers/mtd/nand/Kconfig

The configuration item CONFIG_MTD_NAND_OMAP_BCH:

• prompt: Support hardware based BCH error correction
• type: bool
• depends on: CONFIG_MTD_NAND_OMAP2
• defined in drivers/mtd/nand/Kconfig
• found in Linux kernels: 3.18–3.19, 4.0–4.16
• modules built: elm

Help text

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 this is optional for them.

Support hardware based BCH error correction found in drivers/mtd/nand/Kconfig

The configuration item CONFIG_MTD_NAND_OMAP_BCH:

• prompt: Support hardware based BCH error correction
• type: tristate
• depends on: CONFIG_MTD_NAND_OMAP2
• defined in drivers/mtd/nand/Kconfig
• found in Linux kernels: 3.13–3.17
• modules built: elm

Help text

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.

Enable support for hardware BCH error correction found in drivers/mtd/nand/Kconfig

The configuration item CONFIG_MTD_NAND_OMAP_BCH:

• prompt: Enable support for hardware BCH error correction
• type: tristate
• depends on: CONFIG_MTD_NAND && CONFIG_MTD_NAND_OMAP2 && CONFIG_ARCH_OMAP3
• defined in drivers/mtd/nand/Kconfig
• found in Linux kernels: 3.11–3.12
• modules built: elm

Help text

Support for hardware BCH error correction.

Enable support for hardware BCH error correction found in drivers/mtd/nand/Kconfig

The configuration item CONFIG_MTD_NAND_OMAP_BCH:

• prompt: Enable support for hardware BCH error correction
• type: bool
• depends on: CONFIG_MTD_NAND && CONFIG_MTD_NAND_OMAP2 && CONFIG_ARCH_OMAP3
• defined in drivers/mtd/nand/Kconfig
• found in Linux kernels: 3.5–3.10
• modules built: elm

Help text

Support for hardware BCH error correction.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module elm CONFIG_MTD_NAND_OMAP_BCH : drivers/mtd/nand/Kconfig : "Support hardware based BCH error correction" # in 3.11–3.17
• lkddb of "" "" "ti,am3352-elm" : CONFIG_MTD CONFIG_MTD_NAND_OMAP_BCH : drivers/mtd/devices/elm.c # in 3.9–3.17
• lkddb platform "elm" : CONFIG_MTD CONFIG_MTD_NAND_OMAP_BCH : drivers/mtd/devices/elm.c # in 3.9–3.14
• lkddb platform "omap-elm" : CONFIG_MTD CONFIG_MTD_NAND_OMAP_BCH : drivers/mtd/devices/elm.c # in 3.15–3.17

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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