[U-Boot] [PATCH v9 00/21] dm: Generic MTD Subsystem/SPI-NOR

[Jagan Teki]

The previous series [1] [2] are added SPI-NOR on top of
mtd/spi where it bypassing DM_SPI_FLASH and use the existing
mtd core (which is non-dm), I feel this is moving in a reverse
direction where adding new feature with the help of non-dm mtd
core support and also few of the spi drivers are not fully dm-driven.

Previous design series[3]: keep the mtd/spi as it is and start adding
spi-nor features separately. The idea here is to add the dm features
to MTD first and then add UCLASS_MTD spi-nor drivers so-that the commands
are interfacing to spi-nor through dm-driven MTD core to spi-nor.

This series adding a new command 'mtd.c' which is common for all MTD devices
SPI-NOR, SPI-NOR(master) and Parallel NOR with dm-driven. 

SPI-NOR and Parallel NOR:
------------------------

------------------------------------
              mtd.c
------------------------------------
            mtd-uclass
------------------------------------
       SPI-NOR Core        CFI FLASH
------------------------------------
m25p80.c        zynq_qspi
-----------------------------------
spi-uclass      SPI NOR chip
-----------------------------------
spi drivers
-----------------------------------
SPI NOR chip
-----------------------------------

drivers/mtd/spi-nor/

- Add dm mtd operations
- spi-nor.c:   Add basic SPI-NOR core like erase/read/write ops and lock's will add later
- m25p80.c:    spi-nor to spi divers interface layer drivers/spi-nor
- zynq_qspi.c: zynq qspi spi-nor controller driver.

Current Status:
--------------
- SPI-NOR Controller design flow working, see Log

TODO:
----
- SPI-NOR with SPI bus
- Parallel NOR.

Log:
----
Zynq> mtd
mtd - MTD Sub-system

Usage:
mtd list                        - show list of MTD devices
mtd info                        - show current MTD device info
mtd probe devnum                - probe the 'devnum' MTD device
mtd erase offset len            - erase 'len' bytes from 'offset'
mtd write addr to len           - write 'len' bytes to 'to' from 'addr'
mtd read addr from len          - read 'len' bytes from 'from' to 'addr'
Zynq> mtd list
MTD 1:  spi-nor at e000d000
Zynq>
MTD 1:  spi-nor at e000d000
Zynq> mtd list
MTD 1:  spi-nor at e000d000
Zynq> mtd probe 0
failing to set MTD device 0
Zynq> mtd probe 1
SPI-NOR: detected s25fl128s_64k with page size 256 Bytes, erase size 64 KiB, total 16 MiB
Zynq> mtd info  
MTD Device 1: s25fl128s_64k
 Page size:     256 B
 Erase size:    64 KiB
 Size:          16 MiB
Zynq> mtd list
MTD 1:  spi-nor at e000d000  (active 1)
Zynq> mtd erase 0xE00000 0x100000
MTD: 1048576 bytes @ 0xe00000 Erased: OK
Zynq> mw.b 0x100 0xaa 0x100000
Zynq> mtd write 0x100 0xE00000 0x100000
device 0 offset 0xe00000, size 0x100000
MTD: 1048576 bytes @ 0xe00000 Written: OK
Zynq> mtd read 0x3000000 0xE00000 0x100000
device 0 offset 0xe00000, size 0x100000
MTD: 1048576 bytes @ 0xe00000 Read: OK
Zynq> cmp.b 0x3000000 0x100 0x100000
Total of 1048576 byte(s) were the same

Testing:
-------
$ git clone git://git.denx.de/u-boot-spi.git
$ cd u-boot-spi
$ git checkout -b mtd origin/mtd-working

[1] http://lists.denx.de/pipermail/u-boot/2016-March/249286.html
[2] http://lists.denx.de/pipermail/u-boot/2016-February/245418.html
[3] [PATCH RFC v8 00/16]  SPI-NOR/MTD addition

Jagan Teki (21):
  dm: mtd: Add dm mtd core ops
  mtd: Add SPI-NOR core support
  mtd: spi-nor: Kconfig: Add MTD_SPI_NOR entry
  mtd: spi-nor: Kconfig: Add MTD_SPI_NOR_USE_4K_SECTORS
  mtd: spi-nor: Kconfig: Add SPI_NOR_MISC entry
  mtd: spi-nor: Kconfig: Add SPI_NOR_MACRONIX entry
  mtd: spi-nor: Kconfig: Add SPI_NOR_SPANSION entry
  mtd: spi-nor: Kconfig: Add SPI_NOR_STMICRO entry
  mtd: spi-nor: Kconfig: Add SPI_NOR_SST entry
  mtd: spi-nor: Kconfig: Add SPI_NOR_WINBOND entry
  spi: Add spi_write_then_read
  mtd: spi-nor: Add m25p80 driver
  mtd: spi-nor: Kconfig: Add MTD_M25P80 entry
  mtd: spi-nor: Add zynq qspinor driver
  mtd: spi-nor: zynq_qspi: Kconfig: Add MTD_ZYNQ
  mtd: spi-nor: Add 4-byte addresswidth support
  dm: mtd: Add uclass_driver.flags
  dm: mtd: Add post_bind
  cmd: Add mtd command support
  arm: dts: zynq: Add zynq-qspinor node
  dm: zynq: microzed: Enable MTD/SPI-NOR

 Makefile                           |   1 +
 arch/arm/dts/zynq-7000.dtsi        |  12 +
 arch/arm/dts/zynq-microzed.dts     |   6 +
 cmd/Kconfig                        |   6 +
 cmd/Makefile                       |   1 +
 cmd/mtd.c                          | 285 ++++++++++++++++
 configs/zynq_microzed_defconfig    |  14 +-
 drivers/mtd/Kconfig                |   2 +
 drivers/mtd/Makefile               |   2 +-
 drivers/mtd/mtd-uclass.c           |  93 +++++
 drivers/mtd/spi-nor/Kconfig        |  89 +++++
 drivers/mtd/spi-nor/Makefile       |  15 +
 drivers/mtd/spi-nor/m25p80.c       | 218 ++++++++++++
 drivers/mtd/spi-nor/spi-nor-ids.c  | 176 ++++++++++
 drivers/mtd/spi-nor/spi-nor.c      | 684 +++++++++++++++++++++++++++++++++++++
 drivers/mtd/spi-nor/zynq_qspinor.c | 641 ++++++++++++++++++++++++++++++++++
 drivers/spi/spi-uclass.c           |  24 ++
 include/linux/err.h                |   5 +
 include/linux/mtd/spi-nor.h        | 211 ++++++++++++
 include/mtd.h                      |  63 ++++
 include/spi.h                      |  20 ++
 21 files changed, 2562 insertions(+), 6 deletions(-)
 create mode 100644 cmd/mtd.c
 create mode 100644 drivers/mtd/spi-nor/Kconfig
 create mode 100644 drivers/mtd/spi-nor/Makefile
 create mode 100644 drivers/mtd/spi-nor/m25p80.c
 create mode 100644 drivers/mtd/spi-nor/spi-nor-ids.c
 create mode 100644 drivers/mtd/spi-nor/spi-nor.c
 create mode 100644 drivers/mtd/spi-nor/zynq_qspinor.c
 create mode 100644 include/linux/mtd/spi-nor.h

-- 
2.7.4