[U-Boot] [PATCH v3 0/8] sf: improve support of (Q)SPI flash memories

[Wenyou Yang <wenyou.yang@microchip.com>]

This series of patches are based and have been tested on the 'master'
branch of the u-boot.git tree.

Tests were passed with a sama5d2 xplained board which embeds both SPI and
QSPI controllers.

The following tests have been passed:

- QSPI0 + Macronix MX25L25673G:
  + probe: OK
  + Fast Read 1-1-4 at offset 0x10000 (u-boot env): OK
  + Page Program 1-1-4 at offset 0x10000: OK
    The Macronix datasheet tells that only Page Program 1-4-4 is
    supported, not Page Program 1-1-4, however it worked, I don't know
    why...

- QSPI0 + Microchip SST26
  + probe: OK
  + Fast Read 1-1-4 at offset 0x10000 (u-boot env): OK
  + Page Program 1-1-1 at offset 0x10000: OK
    SST26 memories support Page Program 1-4-4 but with the op code of
    Page Program 1-1-4, which is not standard so I don't use it.

- QSPI0 + Adesto AT25DF321A
  + probe: OK
  + Fast Read 1-1-1 at offset 0x10000 (u-boot env): OK
  + Page Program 1-1-1 at offset 0x10000: OK

- SPI0 + Adesto AT25DF321A
  + probe: OK
  + Fast Read 1-1-1 at offset 0x6000 (u-boot env): OK
  + Page Program 1-1-1 at offest 0x6000: OK

- SPI1 + Atmel AT45
  + probe: OK
  + Read at offset 0 and other than 0: OK
  + Write at offset 0 and other than 0: OK

During my tests, I used:
  - setenv/saveenv, reboot, printenv
  or
  - sf probe, sf read, sf write, sf erase and sf update.

Changes in v3:
 - Add the include <spi.h> to fix build error for corvus_defconfig.

Changes in v2:
 - Rebase on the latest u-boot/master(2710d54f5).

Cyrille Pitchen (8):
  spi: add support of SPI flash commands
  sf: describe all SPI flash commands with 'struct spi_flash_command'
  sf: select the relevant SPI flash protocol for read and write commands
  sf: differentiate Page Program 1-1-4 and 1-4-4
  sf: add 'addr_len' member to 'struct spi_flash'
  sf: add new option to support SPI flash above 16MiB
  sf: add support to Microchip SST26 QSPI memories
  sf: add driver for Atmel QSPI controller

 drivers/mtd/spi/Kconfig         |  16 +-
 drivers/mtd/spi/sf.c            |  78 ++++++--
 drivers/mtd/spi/sf_dataflash.c  | 119 ++++++------
 drivers/mtd/spi/sf_internal.h   |  48 +++--
 drivers/mtd/spi/spi_flash.c     | 341 +++++++++++++++++++++++----------
 drivers/mtd/spi/spi_flash_ids.c |   5 +
 drivers/spi/Kconfig             |   7 +
 drivers/spi/Makefile            |   1 +
 drivers/spi/atmel_qspi.c        | 404 ++++++++++++++++++++++++++++++++++++++++
 drivers/spi/atmel_qspi.h        | 169 +++++++++++++++++
 drivers/spi/spi-uclass.c        |  40 ++++
 drivers/spi/spi.c               |  13 ++
 include/spi.h                   | 168 +++++++++++++++++
 include/spi_flash.h             |   7 +
 14 files changed, 1226 insertions(+), 190 deletions(-)
 create mode 100644 drivers/spi/atmel_qspi.c
 create mode 100644 drivers/spi/atmel_qspi.h

-- 
2.13.0