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The MediaTek Hardware ECC Engine is only present on MediaTek MT27xx and
MT76xx SoCs. The driver for this engine is a dependency for the
MediaTek NAND controller (MTD_NAND_MTK) and the MediaTek SPI NAND Flash
Interface (SPI_MTK_SNFI) drivers, both of which already depend on
ARCH_MEDIATEK.
Hence add a dependency on ARCH_MEDIATEK to the Hardware ECC Engine
driver, too, to prevent asking the user about this driver when
configuring a kernel without MediaTek SoC support.
Fixes: 4fd62f15af ("mtd: nand: make mtk_ecc.c a separated module")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/bb9568e825d4bc7506870b03836baa91bcc4b725.1652104136.git.geert+renesas@glider.be
67 lines
1.7 KiB
Plaintext
67 lines
1.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menu "NAND"
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config MTD_NAND_CORE
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tristate
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source "drivers/mtd/nand/onenand/Kconfig"
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source "drivers/mtd/nand/raw/Kconfig"
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source "drivers/mtd/nand/spi/Kconfig"
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menu "ECC engine support"
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config MTD_NAND_ECC
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bool
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select MTD_NAND_CORE
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config MTD_NAND_ECC_SW_HAMMING
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bool "Software Hamming ECC engine"
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default y if MTD_RAW_NAND
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select MTD_NAND_ECC
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help
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This enables support for software Hamming error
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correction. This correction can correct up to 1 bit error
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per chunk and detect up to 2 bit errors. While it used to be
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widely used with old parts, newer NAND chips usually require
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more strength correction and in this case BCH or RS will be
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preferred.
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config MTD_NAND_ECC_SW_HAMMING_SMC
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bool "NAND ECC Smart Media byte order"
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depends on MTD_NAND_ECC_SW_HAMMING
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default n
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help
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Software ECC according to the Smart Media Specification.
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The original Linux implementation had byte 0 and 1 swapped.
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config MTD_NAND_ECC_SW_BCH
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bool "Software BCH ECC engine"
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select BCH
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select MTD_NAND_ECC
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default n
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help
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This enables support for software BCH error correction. Binary BCH
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codes are more powerful and cpu intensive than traditional Hamming
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ECC codes. They are used with NAND devices requiring more than 1 bit
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of error correction.
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config MTD_NAND_ECC_MXIC
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bool "Macronix external hardware ECC engine"
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depends on HAS_IOMEM
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select MTD_NAND_ECC
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help
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This enables support for the hardware ECC engine from Macronix.
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config MTD_NAND_ECC_MEDIATEK
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tristate "Mediatek hardware ECC engine"
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depends on HAS_IOMEM
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depends on ARCH_MEDIATEK || COMPILE_TEST
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select MTD_NAND_ECC
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help
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This enables support for the hardware ECC engine from Mediatek.
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endmenu
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endmenu
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