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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-22 16:56:22 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-22 16:56:22 -0700 |
commit | ac1b7c378ef26fba6694d5f118fe7fc16fee2fe2 (patch) | |
tree | 3f72979545bb070eb2c3e903cbf31dc4aef3ffc9 /Documentation | |
parent | 9e268beb92ee3a853b3946e84b10358207e2085f (diff) | |
parent | c90173f0907486fe4010c2a8cef534e2473db43f (diff) | |
download | linux-ac1b7c378ef26fba6694d5f118fe7fc16fee2fe2.tar.bz2 |
Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (63 commits)
mtd: OneNAND: Allow setting of boundary information when built as module
jffs2: leaking jffs2_summary in function jffs2_scan_medium
mtd: nand: Fix memory leak on txx9ndfmc probe failure.
mtd: orion_nand: use burst reads with double word accesses
mtd/nand: s3c6400 support for s3c2410 driver
[MTD] [NAND] S3C2410: Use DIV_ROUND_UP
[MTD] [NAND] S3C2410: Deal with unaligned lengths in S3C2440 buffer read/write
[MTD] [NAND] S3C2410: Allow the machine code to get the BBT table from NAND
[MTD] [NAND] S3C2410: Added a kerneldoc for s3c2410_nand_set
mtd: physmap_of: Add multiple regions and concatenation support
mtd: nand: max_retries off by one in mxc_nand
mtd: nand: s3c2410_nand_setrate(): use correct macros for 2412/2440
mtd: onenand: add bbt_wait & unlock_all as replaceable for some platform
mtd: Flex-OneNAND support
mtd: nand: add OMAP2/OMAP3 NAND driver
mtd: maps: Blackfin async: fix memory leaks in probe/remove funcs
mtd: uclinux: mark local stuff static
mtd: uclinux: do not allow to be built as a module
mtd: uclinux: allow systems to override map addr/size
mtd: blackfin NFC: fix hang when using NAND on BF527-EZKITs
...
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/ABI/testing/sysfs-class-mtd | 125 | ||||
-rw-r--r-- | Documentation/kernel-parameters.txt | 10 |
2 files changed, 135 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-mtd b/Documentation/ABI/testing/sysfs-class-mtd new file mode 100644 index 000000000000..4d55a1888981 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-mtd @@ -0,0 +1,125 @@ +What: /sys/class/mtd/ +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + The mtd/ class subdirectory belongs to the MTD subsystem + (MTD core). + +What: /sys/class/mtd/mtdX/ +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + The /sys/class/mtd/mtd{0,1,2,3,...} directories correspond + to each /dev/mtdX character device. These may represent + physical/simulated flash devices, partitions on a flash + device, or concatenated flash devices. They exist regardless + of whether CONFIG_MTD_CHAR is actually enabled. + +What: /sys/class/mtd/mtdXro/ +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + These directories provide the corresponding read-only device + nodes for /sys/class/mtd/mtdX/ . They are only created + (for the benefit of udev) if CONFIG_MTD_CHAR is enabled. + +What: /sys/class/mtd/mtdX/dev +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + Major and minor numbers of the character device corresponding + to this MTD device (in <major>:<minor> format). This is the + read-write device so <minor> will be even. + +What: /sys/class/mtd/mtdXro/dev +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + Major and minor numbers of the character device corresponding + to the read-only variant of thie MTD device (in + <major>:<minor> format). In this case <minor> will be odd. + +What: /sys/class/mtd/mtdX/erasesize +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + "Major" erase size for the device. If numeraseregions is + zero, this is the eraseblock size for the entire device. + Otherwise, the MEMGETREGIONCOUNT/MEMGETREGIONINFO ioctls + can be used to determine the actual eraseblock layout. + +What: /sys/class/mtd/mtdX/flags +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + A hexadecimal value representing the device flags, ORed + together: + + 0x0400: MTD_WRITEABLE - device is writable + 0x0800: MTD_BIT_WRITEABLE - single bits can be flipped + 0x1000: MTD_NO_ERASE - no erase necessary + 0x2000: MTD_POWERUP_LOCK - always locked after reset + +What: /sys/class/mtd/mtdX/name +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + A human-readable ASCII name for the device or partition. + This will match the name in /proc/mtd . + +What: /sys/class/mtd/mtdX/numeraseregions +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + For devices that have variable eraseblock sizes, this + provides the total number of erase regions. Otherwise, + it will read back as zero. + +What: /sys/class/mtd/mtdX/oobsize +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + Number of OOB bytes per page. + +What: /sys/class/mtd/mtdX/size +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + Total size of the device/partition, in bytes. + +What: /sys/class/mtd/mtdX/type +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + One of the following ASCII strings, representing the device + type: + + absent, ram, rom, nor, nand, dataflash, ubi, unknown + +What: /sys/class/mtd/mtdX/writesize +Date: April 2009 +KernelVersion: 2.6.29 +Contact: linux-mtd@lists.infradead.org +Description: + Minimal writable flash unit size. This will always be + a positive integer. + + In the case of NOR flash it is 1 (even though individual + bits can be cleared). + + In the case of NAND flash it is one NAND page (or a + half page, or a quarter page). + + In the case of ECC NOR, it is the ECC block size. diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 5092a2be83c5..54ebf100e4e0 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1431,6 +1431,16 @@ and is between 256 and 4096 characters. It is defined in the file mtdparts= [MTD] See drivers/mtd/cmdlinepart.c. + onenand.bdry= [HW,MTD] Flex-OneNAND Boundary Configuration + + Format: [die0_boundary][,die0_lock][,die1_boundary][,die1_lock] + + boundary - index of last SLC block on Flex-OneNAND. + The remaining blocks are configured as MLC blocks. + lock - Configure if Flex-OneNAND boundary should be locked. + Once locked, the boundary cannot be changed. + 1 indicates lock status, 0 indicates unlock status. + mtdset= [ARM] ARM/S3C2412 JIVE boot control |