[U-Boot] [PATCH v5 00/27] SPI-NAND support

[Jagan Teki]

On Mon, Jul 30, 2018 at 9:16 PM, Miquel Raynal
<miquel.raynal at 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 v4:
> -----------------
> * Added Jagan's Acked-by tags to every patch related to the
>   SPI-mem/SPI-NAND addition.
> * Rebased on top of master.
>
> 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

Applied to u-boot-spi/master