kernel.git/Documentation/devicetree/bindings/mtd, branch linux-3.12.y

mtd: ofpart: add compatible check for child nodes

2013-08-05T20:12:32Z

In case that the nand device will support some features like Nand Flash Controller, we want to make the sub feature as a sub node of nand device. Use such organization it is easy to enable/disable feature, also it is back compatible and more readable. If the sub-node has a compatible property then it is a driver not partition. Signed-off-by: Josh Wu Acked-by: Brian Norris Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy [ added a missing newline -Brian ] Signed-off-by: Brian Norris Signed-off-by: David Woodhouse

mtd: atmel_nand: enable Nand Flash Controller (NFC) write via sram

2013-08-05T20:07:51Z

This patch enable writing nand flash via NFC SRAM. It will minimize the CPU overhead. The SRAM write only support ECC_NONE and ECC_HW with PMECC. To enable this NFC write by SRAM feature, you can add a string in dts under NFC driver node. This driver has been tested on SAMA5D3X-EK with JFFS2, YAFFS2, UBIFS and mtd-utils. Here is part of mtd_speedtest (writing test) result, compare with non-NFC writing, it reduces %65 cpu load with loss %12 speed. - commands use to test: # insmod /mnt/mtd_speedtest.ko dev=2 & # top -n 30 -d 1 | grep speedtest - test result: ================================================= mtd_speedtest: MTD device: 2 mtd_speedtest: MTD device size 41943040, eraseblock size 131072, page size 2048, count of eraseblocks 320, pages per eraseblock 64, OOB size 64 mtd_speedtest: testing eraseblock write speed 509 495 root D 1164 0% 7% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 8% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root R 1164 0% 5% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: eraseblock write speed is 5194 KiB/s mtd_speedtest: testing page write speed 509 495 root D 1164 0% 32% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 27% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 25% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 30% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: page write speed is 5024 KiB/s Signed-off-by: Josh Wu Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: atmel_nand: add Nand Flash Controller (NFC) support

2013-08-05T20:07:41Z

Nand Flash Controller (NFC) can handle automatic transfers, sending the commands and address cycles to the NAND Flash. To use NFC in this driver, user needs to add NFC child node in nand flash driver. The NFC child node includes NFC's compatible string and regiters of the address and size of NFC command registers, NFC registers (embedded in HSMC) and NFC SRAM. Also user need to set up the HSMC irq, which use to check whether nfc command is finish or not. This driver has been tested on SAMA5D3X-EK board with JFFS2, YAFFS, UBIFS and mtd-utils. I put the part of the mtd_speedtest result here for your information. >From the mtd_speedtest, we can see the NFC will reduce the %50 of cpu load when writing nand flash. No change when reading. In the meantime, the speed will be slow about %8. - commands use to test: #insmod /mnt/mtd_speedtest.ko dev=2 & #top -n 30 -d 1 | grep speedtest - test result: Before the patch: ================================================= mtd_speedtest: MTD device: 2 mtd_speedtest: MTD device size 41943040, eraseblock size 131072, page size 2048, count of eraseblocks 320, pages per eraseblock 64, OOB size 64 515 495 root R 1164 0% 93% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 98% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 99% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: eraseblock write speed is 5768 KiB/s mtd_speedtest: testing eraseblock read speed 515 495 root R 1164 0% 92% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 91% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 94% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: eraseblock read speed is 5932 KiB/s mtd_speedtest: testing page write speed 515 495 root R 1164 0% 94% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 98% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 98% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: page write speed is 5770 KiB/s mtd_speedtest: testing page read speed 515 495 root R 1164 0% 91% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 89% insmod /mnt/mtd_speedtest.ko dev=2 515 495 root R 1164 0% 91% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: page read speed is 5910 KiB/s After the patch: ================================================= mtd_speedtest: MTD device: 2 mtd_speedtest: MTD device size 41943040, eraseblock size 131072, page size 2048, count of eraseblocks 320, pages per eraseblock 64, OOB size 64 mtd_speedtest: testing eraseblock write speed 509 495 root D 1164 0% 49% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 50% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 47% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: eraseblock write speed is 5370 KiB/s mtd_speedtest: testing eraseblock read speed 509 495 root R 1164 0% 92% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root R 1164 0% 91% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root R 1164 0% 95% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: eraseblock read speed is 5715 KiB/s mtd_speedtest: testing page write speed 509 495 root D 1164 0% 48% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 47% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root D 1164 0% 50% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: page write speed is 5224 KiB/s mtd_speedtest: testing page read speed 509 495 root R 1164 0% 89% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root R 1164 0% 94% insmod /mnt/mtd_speedtest.ko dev=2 509 495 root R 1164 0% 93% insmod /mnt/mtd_speedtest.ko dev=2 mtd_speedtest: page read speed is 5641 KiB/s Signed-off-by: Josh Wu Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: atmel_nand: add a new dt binding item for nand dma support

2013-08-05T19:56:15Z

This patch will set the nand dma support in dts. Since we will not use cpu_is_xxx() in nand driver. We needn't include the mach/cpu.h any more. Signed-off-by: Josh Wu Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

mtd: nand: fsmc: update of OF support

2013-08-05T19:48:49Z

Add nand bank selection and timings to the device tree bindings. Signed-off-by: Mian Yousaf Kaukab [Added some documentation] Signed-off-by: Linus Walleij Signed-off-by: Artem Bityutskiy Signed-off-by: David Woodhouse

ARM: OMAP2+: Allow NAND transfer mode to be specified in DT

2013-05-16T15:53:22Z

OMAP devices support various NAND transfer modes. Currently all device-tree definitions will use the default "prefetch polled" mode, so this patch enables the transfer mode to be specified in the device-tree. Signed-off-by: Mark Jackson Acked-by: Pekon Gupta Signed-off-by: Tony Lindgren

Merge tag 'omap-for-v3.10/fixes-for-merge-window-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

2013-05-09T20:13:57Z

From Tony Lindgren: Omap fixes for things that were discovered during the merge window: - Few GPMC fixes and binding doc updates noted after sending pull requests for the GPMC branch. - Board fixes for beagle usb host and rx51 spi probe order - SoC fixes dt earlyprintk, omap1 dma and omap2+ id.c error handling fixes Then few minor things that are not strictly fixes but are good to get out of the way: - Add missing legacy mux registers for am/dm73x gpio - Add detection for am33xx pg2.1 silicon - Enable twl4030 audio modules in defconfig * tag 'omap-for-v3.10/fixes-for-merge-window-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: Remove bogus IS_ERR_OR_NULL checking from id.c ARM: OMAP4+: omap2plus_defconfig: Enable audio via TWL6040 as module ARM: OMAP2: AM33XX: id: Add support for new AM335x PG2.1 Si omap: mux: add AM/DM37x gpios ARM: OMAP1: DMA: fix error handling in omap1_system_dma_init() ARM: OMAP2+: omap_device: use late_initcall_sync ARM: OMAP: RX-51: change probe order of touchscreen and panel SPI devices ARM: OMAP3: Beagle: Fix USB Host on beagle xM Ax/Bx ARM: OMAP2+: only WARN if a GPMC child probe function fail ARM: OMAP2+: only search for GPMC DT child nodes on probe Documentation: dt: update properties in TI GPMC NAND example Documentation: dt: update TI GPMC ethernet binding properties Signed-off-by: Olof Johansson

Merge tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd

2013-05-09T17:15:46Z

Pull MTD update from David Woodhouse: - Lots of cleanups from Artem, including deletion of some obsolete drivers - Support partitions larger than 4GiB in device tree - Support for new SPI chips * tag 'for-linus-20130509' of git://git.infradead.org/linux-mtd: (83 commits) mtd: omap2: Use module_platform_driver() mtd: bf5xx_nand: Use module_platform_driver() mtd: denali_dt: Remove redundant use of of_match_ptr mtd: denali_dt: Change return value to fix smatch warning mtd: denali_dt: Use module_platform_driver() mtd: denali_dt: Fix incorrect error check mtd: nand: subpage write support for hardware based ECC schemes mtd: omap2: use msecs_to_jiffies() mtd: nand_ids: use size macros mtd: nand_ids: improve LEGACY_ID_NAND macro a bit mtd: add 4 Toshiba nand chips for the full-id case mtd: add the support to parse out the full-id nand type mtd: add new fields to nand_flash_dev{} mtd: sh_flctl: Use of_match_ptr() macro mtd: gpio: Use of_match_ptr() macro mtd: gpio: Use devm_kzalloc() mtd: davinci_nand: Use of_match_ptr() mtd: dataflash: Use of_match_ptr() macro mtd: remove h720x flash support mtd: onenand: remove OneNAND simulator ...

Merge branch 'omap-gpmc-fixes-for-v3.10' of git://github.com/jonhunter/linux into fixes

2013-05-09T00:06:39Z

Merge tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2013-05-07T18:06:17Z

Pull ARM SoC device tree updates (part 2) from Arnd Bergmann: "These are mostly new device tree bindings for existing drivers, as well as changes to the device tree source files to add support for those devices, and a couple of new boards, most notably Samsung's Exynos5 based Chromebook. The changes depend on earlier platform specific updates and touch the usual platforms: omap, exynos, tegra, mxs, mvebu and davinci." * tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits) ARM: exynos: dts: cros5250: add EC device ARM: dts: Add sbs-battery for exynos5250-snow ARM: dts: Add i2c-arbitrator bus for exynos5250-snow ARM: dts: add mshc controller node for Exynos4x12 SoCs ARM: dts: Add chip-id controller node on Exynos4/5 SoC ARM: EXYNOS: Create virtual I/O mapping for Chip-ID controller using device tree ARM: davinci: da850-evm: add SPI flash support ARM: davinci: da850: override SPI DT node device name ARM: davinci: da850: add SPI1 DT node spi/davinci: add DT binding documentation spi/davinci: no wildcards in DT compatible property ARM: dts: mvebu: Convert mvebu device tree files to 64 bits ARM: dts: mvebu: introduce internal-regs node ARM: dts: mvebu: Convert all the mvebu files to use the range property ARM: dts: mvebu: move all peripherals inside soc ARM: dts: mvebu: fix cpus section indentation ARM: davinci: da850: add EHRPWM & ECAP DT node ARM/dts: OMAP3: fix pinctrl-single configuration ARM: dts: Add OMAP3430 SDP NOR flash memory binding ARM: dts: Add NOR flash bindings for OMAP2420 H4 ...