Hi Jagan, Jagan Teki <ja...@amarulasolutions.com> wrote on Thu, 26 Jul 2018 11:00:56 +0530:
> On Fri, Jul 13, 2018 at 6:01 PM, Miquel Raynal > <miquel.ray...@bootlin.com> wrote: > > During the last months, Boris Brezillon shared his work to support > > serial flashes within Linux. First, he delivered (and merged) a new > > layer called spi-mem. He also initiated in Linux MTD subsystem the move > > of all 'raw' NAND related code to a raw/ subdirectory, adding at the > > same time a NAND core that would be shared with all NAND devices. Then, > > he contributed a generic SPI-NAND driver, making use of this NAND core, > > as well as some vendor code to drive a few chips. > > > > On top of this work, I added an 'mtd' U-Boot command to handle all sort > > of MTD devices. This should become the default command instead of having > > one per flash flavor ('sf', 'nand', 'spi-nand' ?). > > > > The series has been tested on an Ocelot board PCB123 (VSC7514), > > featuring a Macronix SPI NAND chip. > > > > TL;DR: the series contains: > > - A few patches from Linux to resynchronize some areas of the MTD layer. > > - Various fixes and re-organization of the MTD subsystem. > > - The introduction of the SPI-mem interface. > > - The addition of the generic SPI-NAND driver (and its bindings). > > - Several SPI NAND chip drivers (Macronix, Micron, Winbond). > > - A new 'mtd' command. > > - Support for spi-nand devices in mtdparts. > > > > To test your SPI-NAND device with U-Boot simply follow these lines: > > > >> setenv mtdparts mtdparts=spi-nand0:1m(foo),-(bar) > >> setenv mtdids spi-nand0=spi-nand0 > >> mtdparts # show the spi-nand device partitions > >> ubi part bar # create a static UBI volume in the bar partition > > > > Thanks, > > Miquèl > > > > Changes since v3: > > ----------------- > > * Fixed the debug messages in spi-mem to print either Rx or Tx data. > > * Fixed a Kconfig error that prevented to build mtdparts with plain > > defconfig. > > * Fixed a compilation error due to the above error that prevented one > > file to be compiled. > > * Adapted the mtd command to probe MTD partitions also. > > * Declared mtd_probe_devices() in a header so mtdparts or UBI could > > use it too (to probe all devices and MTD partitions in a clean way). > > * As I worked on mtdparts, I found annoying and completely useless the > > fact that we need to prefix the environment variable with > > "mtdparts=". Canceled this obligation. > > * Added one patch to allow spi-nand devices to be recognized by mtdparts > > (this is purely useless but needed to be done in order to use this > > command). > > * Removed useless definitions of MTD device types in UBI code. > > * Wrote a generic mtdparts environment variable parser, used by the mtd > > command. > > * Used the mtd_probe_devices() function from get_mtd_info() in > > cmd/mtdparts.c to be sure the desired partition really does not exist > > (otherwise it will be probed and then found). > > > > Changes since v2: > > ----------------- > > * Rebased on u-boot master branch. > > * Removed extra-parenthesis in > > "mtd: Fallback to ->_read/write() when ->_read/write_oob() is missing" > > * s/fiels/files/ in "mtd: move NAND fiels into a raw/ subdirectory" > > * Do not describe generic SPI device properties in SPI NAND bindings. > > * Changes in the mtd command: > > * Printing more information in 'mtd list' (device type, device > > characteristics) > > * Switch to do_div() instead of '(u32)value64b % value32b' which only > > worked because value32b was a power of 2. > > * Removed erase.chip option. > > * By default, erase/read/write happen on the full MTD device while a > > dump will only work on a single page. > > > > Changes since v1: > > ----------------- > > * Fixed the nand_memorg structure of the MX35LF2GE4AB chip. > > * Added Reviewed-by tags from Jagan. > > * Backported and squashed two patches fixing things in the SPI NAND core > > received on the Linux ML. > > * Backported more changes in mtdcore.c from Linux. > > * Added a patch to add a fallback on mtd->_read/_write() in mtdcore.c > > when mtd->_read/write_oob() is not supported. > > * Removed the DT changes, useless as the DTs are not available in > > mainline yet. > > * Addressed Boris/Stefan comments on the 'mtd' command. > > * Added support for multi-pages OOB read/write. > > > > > > Boris Brezillon (7): > > mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing > > mtd: Add sanity checks in mtd_write/read_oob() > > mtd: nand: Add core infrastructure to deal with NAND devices > > mtd: nand: Pass mode information to nand_page_io_req > > spi: Extend the core to ease integration of SPI memory controllers > > mtd: spinand: Add initial support for the MX35LF1GE4AB chip > > dt-bindings: Add bindings for SPI NAND devices > > > > Brian Norris (1): > > mtd: add get/set of_node/flash_node helpers > > > > Ezequiel Garcia (1): > > mtd: Uninline mtd_write_oob and move it to mtdcore.c > > > > Frieder Schrempf (1): > > mtd: spinand: Add initial support for Winbond W25M02GV > > > > Miquel Raynal (15): > > mtd: Fallback to ->_read/write() when ->_read/write_oob() is missing > > mtd: fix build issue with includes > > mtd: move definitions to enlarge their range > > mtd: move all flash categories inside MTD submenu > > mtd: move NAND files into a raw/ subdirectory > > mtd: rename nand into rawnand in Kconfig prompt > > mtd: spinand: Add initial support for the MX35LF2GE4AB chip > > mtd: declare MTD_PARTITIONS symbol in Kconfig > > cmd: ubi: delete useless and misleading definitions > > cmd: mtdparts: accept spi-nand devices > > cmd: mtdparts: add a generic 'mtdparts' parser > > cmd: mtdparts: remove useless 'mtdparts=' prefix > > mtd: uclass: add probe function > > cmd: mtd: add 'mtd' command > > cmd: mtdparts: try to probe the MTD devices as a fallback > > > > Peter Pan (2): > > mtd: nand: Add core infrastructure to support SPI NANDs > > mtd: spinand: Add initial support for Micron MT29F2G01ABAGD > > Acked--by: Jagan Teki <ja...@openedev.com> > Thanks! > Can you rebase on master and send the needed patches or whole? Look > like some changes been added in drivers/mtd/nand/Kconfig I'll wait a bit for Stefan review also and I think I missed something in mtdparts: old partitions are not freed when creating new ones. Kind regards, Miquèl _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot