linux.git/Documentation/devicetree/bindings/mtd, branch v3.19 Linux kernel source tree mtd: atmel_nand: make PMECC lookup table and offset property optional 2014-11-05T22:44:25+00:00 Josh Wu Josh.wu@atmel.com 2014-10-11T10:01:50+00:00 abb1cd00e6b7434e866f1f817b4994e1c7f1f16d If there is no PMECC lookup table stored in ROM, or lookup table offset is not specified, PMECC driver should build it in DDR by itself. That make the PMECC driver work for some board which doesn't have PMECC lookup table in ROM. The PMECC use the BCH algorithm, so based on the build_gf_tables() function in lib/bch.c, we can build the Galois Field lookup table. For more information can refer to section 5.4 of PMECC controller application note: http://www.atmel.com/images/doc11127.pdf Signed-off-by: Josh Wu <josh.wu@atmel.com> Cc: devicetree@vger.kernel.org Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
If there is no PMECC lookup table stored in ROM, or lookup table offset is
not specified, PMECC driver should build it in DDR by itself.

That make the PMECC driver work for some board which doesn't have PMECC
lookup table in ROM.

The PMECC use the BCH algorithm, so based on the build_gf_tables()
function in lib/bch.c, we can build the Galois Field lookup table.

For more information can refer to section 5.4 of PMECC controller
application note:
	http://www.atmel.com/images/doc11127.pdf

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
devicetree: bindings: improve description for GPIO assisted NAND flash 2014-11-05T07:53:06+00:00 Gerhard Sittig gsi@denx.de 2014-08-05T08:37:25+00:00 f861a9253e7f456d870f8dd46bdde2ac02149bc6 Expand the description of the 'gpios' property in the GPIO assisted NAND flash binding, to explicitly list the required GPIO pin references and their order. Update the example section to individually bracket the GPIO references, and capitalize the signal names for improved readability. Signed-off-by: Gerhard Sittig <gsi@denx.de> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Expand the description of the 'gpios' property in the GPIO assisted
NAND flash binding, to explicitly list the required GPIO pin references
and their order.

Update the example section to individually bracket the GPIO references,
and capitalize the signal names for improved readability.

Signed-off-by: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd: nand: add sunxi NFC dt bindings doc 2014-10-29T17:08:01+00:00 Boris BREZILLON boris.brezillon@free-electrons.com 2014-10-21T13:08:42+00:00 5935946c6a1180dcb495fffb2c45eddedfa09064 Add the sunxi NAND Flash Controller dt bindings documentation. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Add the sunxi NAND Flash Controller dt bindings documentation.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd: docg3: add device-tree documentation 2014-10-22T08:35:40+00:00 Robert Jarzmik robert.jarzmik@free.fr 2014-09-27T19:34:30+00:00 9c350066a709f7ee3d1219e9888252daf547af99 Add documentation for the sandisk docg3 chip. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Cc: devicetree@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Add documentation for the sandisk docg3 chip.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Merge tag 'for-linus-20141015' of git://git.infradead.org/linux-mtd 2014-10-18T18:48:03+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-10-18T18:48:03+00:00 511c41d9e6665a07aca94eb00983cf6d77dd87ff Pull MTD update from Brian Norris: "Sorry for delaying this a bit later than usual. There's one mild regression from 3.16 that was noticed during the 3.17 cycle, and I meant to send a fix for it along with this pull request. I'll probably try to queue it up for a later pull request once I've had a better look at it, hopefully by -rc2 at the latest. Summary for this pull: NAND - Cleanup for Denali driver - Atmel: add support for new page sizes - Atmel: fix up 'raw' mode support - Atmel: miscellaneous cleanups - New timing mode helpers for non-ONFI NAND - OMAP: allow driver to be (properly) built as a module - bcm47xx: RESET support and other cleanups SPI NOR - Miscellaneous cleanups, to prepare framework for wider use (some further work still pending) - Compile-time configuration to select 4K vs. 64K support for flash that support both (necessary for using UBIFS on some SPI NOR) A few scattered code quality fixes, detected by Coverity See the changesets for more" * tag 'for-linus-20141015' of git://git.infradead.org/linux-mtd: (59 commits) mtd: nand: omap: Correct CONFIG_MTD_NAND_OMAP_BCH help message mtd: nand: Force omap_elm to be built as a module if omap2_nand is a module mtd: move support for struct flash_platform_data into m25p80 mtd: spi-nor: add Kconfig option to disable 4K sectors mtd: nand: Move ELM driver and rename as omap_elm nand: omap2: Replace pr_err with dev_err nand: omap2: Remove horrible ifdefs to fix module probe mtd: nand: add Hynix's H27UCG8T2ATR-BC to nand_ids table mtd: nand: support ONFI timing mode retrieval for non-ONFI NANDs mtd: physmap_of: Add non-obsolete map_rom probe mtd: physmap_of: Fix ROM support via OF MAINTAINERS: add l2-mtd.git, 'next' tree for MTD mtd: denali: fix indents and other trivial things mtd: denali: remove unnecessary parentheses mtd: denali: remove another set-but-unused variable mtd: denali: fix include guard and license block of denali.h mtd: nand: don't break long print messages mtd: bcm47xxnflash: replace some magic numbers mtd: bcm47xxnflash: NAND_CMD_RESET support mtd: bcm47xxnflash: add cmd_ctrl handler ... 
Pull MTD update from Brian Norris:
 "Sorry for delaying this a bit later than usual.  There's one mild
  regression from 3.16 that was noticed during the 3.17 cycle, and I
  meant to send a fix for it along with this pull request.  I'll
  probably try to queue it up for a later pull request once I've had a
  better look at it, hopefully by -rc2 at the latest.

  Summary for this pull:

  NAND
   - Cleanup for Denali driver
   - Atmel: add support for new page sizes
   - Atmel: fix up 'raw' mode support
   - Atmel: miscellaneous cleanups
   - New timing mode helpers for non-ONFI NAND
   - OMAP: allow driver to be (properly) built as a module
   - bcm47xx: RESET support and other cleanups

  SPI NOR
   - Miscellaneous cleanups, to prepare framework for wider use (some
     further work still pending)
   - Compile-time configuration to select 4K vs.  64K support for flash
     that support both (necessary for using UBIFS on some SPI NOR)

  A few scattered code quality fixes, detected by Coverity

  See the changesets for more"

* tag 'for-linus-20141015' of git://git.infradead.org/linux-mtd: (59 commits)
  mtd: nand: omap: Correct CONFIG_MTD_NAND_OMAP_BCH help message
  mtd: nand: Force omap_elm to be built as a module if omap2_nand is a module
  mtd: move support for struct flash_platform_data into m25p80
  mtd: spi-nor: add Kconfig option to disable 4K sectors
  mtd: nand: Move ELM driver and rename as omap_elm
  nand: omap2: Replace pr_err with dev_err
  nand: omap2: Remove horrible ifdefs to fix module probe
  mtd: nand: add Hynix's H27UCG8T2ATR-BC to nand_ids table
  mtd: nand: support ONFI timing mode retrieval for non-ONFI NANDs
  mtd: physmap_of: Add non-obsolete map_rom probe
  mtd: physmap_of: Fix ROM support via OF
  MAINTAINERS: add l2-mtd.git, 'next' tree for MTD
  mtd: denali: fix indents and other trivial things
  mtd: denali: remove unnecessary parentheses
  mtd: denali: remove another set-but-unused variable
  mtd: denali: fix include guard and license block of denali.h
  mtd: nand: don't break long print messages
  mtd: bcm47xxnflash: replace some magic numbers
  mtd: bcm47xxnflash: NAND_CMD_RESET support
  mtd: bcm47xxnflash: add cmd_ctrl handler
  ...
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-08T01:16:26+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-10-08T01:16:26+00:00 28596c9722289b2f98fa83a2e4351eb0a031b953 Pull "trivial tree" updates from Jiri Kosina: "Usual pile from trivial tree everyone is so eagerly waiting for" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) Remove MN10300_PROC_MN2WS0038 mei: fix comments treewide: Fix typos in Kconfig kprobes: update jprobe_example.c for do_fork() change Documentation: change "&" to "and" in Documentation/applying-patches.txt Documentation: remove obsolete pcmcia-cs from Changes Documentation: update links in Changes Documentation: Docbook: Fix generated DocBook/kernel-api.xml score: Remove GENERIC_HAS_IOMAP gpio: fix 'CONFIG_GPIO_IRQCHIP' comments tty: doc: Fix grammar in serial/tty dma-debug: modify check_for_stack output treewide: fix errors in printk genirq: fix reference in devm_request_threaded_irq comment treewide: fix synchronize_rcu() in comments checkstack.pl: port to AArch64 doc: queue-sysfs: minor fixes init/do_mounts: better syntax description MIPS: fix comment spelling powerpc/simpleboot: fix comment ... 
Pull "trivial tree" updates from Jiri Kosina:
 "Usual pile from trivial tree everyone is so eagerly waiting for"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits)
  Remove MN10300_PROC_MN2WS0038
  mei: fix comments
  treewide: Fix typos in Kconfig
  kprobes: update jprobe_example.c for do_fork() change
  Documentation: change "&" to "and" in Documentation/applying-patches.txt
  Documentation: remove obsolete pcmcia-cs from Changes
  Documentation: update links in Changes
  Documentation: Docbook: Fix generated DocBook/kernel-api.xml
  score: Remove GENERIC_HAS_IOMAP
  gpio: fix 'CONFIG_GPIO_IRQCHIP' comments
  tty: doc: Fix grammar in serial/tty
  dma-debug: modify check_for_stack output
  treewide: fix errors in printk
  genirq: fix reference in devm_request_threaded_irq comment
  treewide: fix synchronize_rcu() in comments
  checkstack.pl: port to AArch64
  doc: queue-sysfs: minor fixes
  init/do_mounts: better syntax description
  MIPS: fix comment spelling
  powerpc/simpleboot: fix comment
  ...
mtd: physmap_of: Add non-obsolete map_rom probe 2014-09-22T17:13:13+00:00 Aaron Sierra asierra@xes-inc.com 2014-09-17T18:08:28+00:00 e5bffb59cfbb3371ff00a165a5a48c1f3fdf125a Previously, the only way to map a NOR device as a simple ROM was to use the obsolete "direct-mapped" compatible binding (which further requires device_type = "nor" and probe-type = "NOR" properties). This patch adds an "mtd-rom" compatible binding to the "map_rom" probe type. Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Previously, the only way to map a NOR device as a simple ROM was to
use the obsolete "direct-mapped" compatible binding (which further
requires device_type = "nor" and probe-type = "NOR" properties).

This patch adds an "mtd-rom" compatible binding to the "map_rom"
probe type.

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
mtd: nand: atmel_nand: retrieve NFC clock 2014-09-17T07:45:11+00:00 Boris BREZILLON boris.brezillon@free-electrons.com 2014-09-12T23:23:59+00:00 2d405ec5fdd5b6848beb820301d4fcaa3e2c4159 Retrieve the NFC clock to make sure it is enabled. Make that optional to ensure compatibility with previous device trees but document it as mandatory so newer device trees will include it. Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Josh Wu <josh.wu@atmel.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> 
Retrieve the NFC clock to make sure it is enabled. Make that optional to ensure
compatibility with previous device trees but document it as mandatory so newer
device trees will include it.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Documentation: treewide: fix typos and grammar 2014-08-26T07:35:51+00:00 Hayato Suzuki hytszk@gmail.com 2014-07-02T06:15:32+00:00 24488c392067e948b3b2c6911d6e8b522931714c Correct spelling typo in treewide. Signed-off-by: Hayato Suzuki <hytszk@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz> 
Correct spelling typo in treewide.

Signed-off-by: Hayato Suzuki <hytszk@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ARM: OMAP2+: GPMC: Support Software ECC scheme via DT 2014-08-25T23:15:33+00:00 Roger Quadros rogerq@ti.com 2014-08-25T23:15:33+00:00 a3e83f05fbbf6c4994c658521a750bbd68bdf7a6 For v3.14 and prior, 1-bit Hamming code ECC via software was the default choice for some boards e.g. 3430sdp. Commit ac65caf514ec in v3.15 changed the behaviour to use 1-bit Hamming code via Hardware using a different ECC layout i.e. (ROM code layout) than what is used by software ECC. This ECC layout change causes NAND filesystems created in v3.14 and prior to be unusable in v3.15 and later. So don't mark "sw" scheme as deperecated and support it. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> 
For v3.14 and prior, 1-bit Hamming code ECC via software was the
default choice for some boards e.g. 3430sdp.
Commit ac65caf514ec in v3.15 changed the behaviour
to use 1-bit Hamming code via Hardware using a different ECC layout
i.e. (ROM code layout) than what is used by software ECC.

This ECC layout change causes NAND filesystems created in v3.14
and prior to be unusable in v3.15 and later. So don't mark "sw" scheme
as deperecated and support it.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>