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| author | Richard Genoud | 2008-04-23 19:51:14 +0200 |
|---|---|---|
| committer | David Woodhouse | 2008-04-24 00:34:28 +0200 |
| commit | 77f5492c43adb4eb351fa0d163136877e8b2ed92 (patch) | |
| tree | 0057c375e48c1a98e05e403c218f562a2784029d /drivers/mtd/nand/Kconfig | |
| parent | [JFFS2] Introduce dbg_readinode2 log level, use it to shut read_dnode() up (diff) | |
| download | kernel-qcow2-linux-77f5492c43adb4eb351fa0d163136877e8b2ed92.tar.gz kernel-qcow2-linux-77f5492c43adb4eb351fa0d163136877e8b2ed92.tar.xz kernel-qcow2-linux-77f5492c43adb4eb351fa0d163136877e8b2ed92.zip | |
[MTD] [NAND] Hardware ECC controller on at91sam9263 / at91sam9260
This is a patch to use the hardware ECC controller of
the AT91SAM9260 and AT91SAM9263 for the AT91 nand.
On AT91 NAND, there's now a choice between ECC soft,
ECC hard or no ECC (for debug).
It has been tested on AT91SAM9263 with 8 bits large
and small page NAND.
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd/nand/Kconfig')
| -rw-r--r-- | drivers/mtd/nand/Kconfig | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index dcbb0decd465..5076faf9ca66 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -278,6 +278,47 @@ config MTD_NAND_AT91 help Enables support for NAND Flash / Smart Media Card interface on Atmel AT91 processors. +choice + prompt "ECC management for NAND Flash / SmartMedia on AT91" + depends on MTD_NAND_AT91 + +config MTD_NAND_AT91_ECC_HW + bool "Hardware ECC" + depends on ARCH_AT91SAM9263 || ARCH_AT91SAM9260 + help + Uses hardware ECC provided by the at91sam9260/at91sam9263 chip + instead of software ECC. + The hardware ECC controller is capable of single bit error + correction and 2-bit random detection per page. + + NB : hardware and software ECC schemes are incompatible. + If you switch from one to another, you'll have to erase your + mtd partition. + + If unsure, say Y + +config MTD_NAND_AT91_ECC_SOFT + bool "Software ECC" + help + Uses software ECC. + + NB : hardware and software ECC schemes are incompatible. + If you switch from one to another, you'll have to erase your + mtd partition. + +config MTD_NAND_AT91_ECC_NONE + bool "No ECC (testing only, DANGEROUS)" + depends on DEBUG_KERNEL + help + No ECC will be used. + It's not a good idea and it should be reserved for testing + purpose only. + + If unsure, say N + + endchoice + +endchoice config MTD_NAND_PXA3xx bool "Support for NAND flash devices on PXA3xx" |