diff options
author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-03-27 11:18:45 -0400 |
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committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2008-04-17 04:32:00 -0400 |
commit | 6e0c84e37e809e79313043385148020ceb760496 (patch) | |
tree | 50759478329fb8cd2083db986bc2b60395820024 /drivers/mtd/ubi | |
parent | c4506092c1773211b71a75bd557c02b090c82b66 (diff) |
UBI: improve Kconfig documentation
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'drivers/mtd/ubi')
-rw-r--r-- | drivers/mtd/ubi/Kconfig | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mtd/ubi/Kconfig b/drivers/mtd/ubi/Kconfig index b9daf159a4a7..3f063108e95f 100644 --- a/drivers/mtd/ubi/Kconfig +++ b/drivers/mtd/ubi/Kconfig | |||
@@ -24,8 +24,13 @@ config MTD_UBI_WL_THRESHOLD | |||
24 | erase counter value and the lowest erase counter value of eraseblocks | 24 | erase counter value and the lowest erase counter value of eraseblocks |
25 | of UBI devices. When this threshold is exceeded, UBI starts performing | 25 | of UBI devices. When this threshold is exceeded, UBI starts performing |
26 | wear leveling by means of moving data from eraseblock with low erase | 26 | wear leveling by means of moving data from eraseblock with low erase |
27 | counter to eraseblocks with high erase counter. Leave the default | 27 | counter to eraseblocks with high erase counter. |
28 | value if unsure. | 28 | |
29 | The default value should be OK for SLC NAND flashes, NOR flashes and | ||
30 | other flashes which have eraseblock life-cycle 100000 or more. | ||
31 | However, in case of MLC NAND flashes which typically have eraseblock | ||
32 | life-cycle less then 10000, the threshold should be lessened (e.g., | ||
33 | to 128 or 256, although it does not have to be power of 2). | ||
29 | 34 | ||
30 | config MTD_UBI_BEB_RESERVE | 35 | config MTD_UBI_BEB_RESERVE |
31 | int "Percentage of reserved eraseblocks for bad eraseblocks handling" | 36 | int "Percentage of reserved eraseblocks for bad eraseblocks handling" |