[U-Boot] [PATCH v3 0/4] sunxi: nand: Basic NAND driver for SPL

[Piotr Zierhoffer]

This is a basic driver for the sunxi NAND controller for Allwinner A20.
It supports only SPL.

The driver uses DMA for data transfers. It does not support writing.

Changes in v3:
- moved pinmux and clock to board level
- code cleanup with significant size reduction
- renamed the driver file
- renamed constants to match Kconfig convention
- moved defines from .h to .c, and renamed them to be consistent with
  each other
- removed more magic values
- changed ecc_errors from static to local variable
- other minor changes
- added new options in Kconfig to support different chips
- changed descriptions to comply with patman rules

Changes in v2:
- removed traces of non-SPL-specific code
- moved the driver from boards/sunxi to drivers/mtd/nand
- moved magic values to defines (whenever possible)
- removed unnecesary late initialisation code
- code style changes as suggested for the first patch set:
  - changed visibility of some symbols
  - renamed unclear variables
  - renamed header protector
  - changed types of pointer variables
  - other minor changes
- removed traces of non-SPL specific code
- renamed defines to be more relevant
- moved Kconfig entry for the driver to drivers/mtd/nand
- reworded Kconfig entry help

Karol Gugala (1):
  sunxi: nand: Add pinmux and clock settings for NAND support

Piotr Zierhoffer (3):
  sunxi: nand: Add basic sunxi NAND driver for SPL with DMA support
  sunxi: nand: Add board configuration options
  sunxi: nand: Add information to sunxi that it was run from NAND in SPL

 arch/arm/cpu/armv7/sunxi/board.c              |   4 +
 arch/arm/include/asm/arch-sunxi/clock_sun4i.h |   2 +
 arch/arm/include/asm/arch-sunxi/gpio.h        |   1 +
 board/sunxi/board.c                           |  27 ++
 drivers/mtd/nand/Kconfig                      |  40 +++
 drivers/mtd/nand/Makefile                     |   1 +
 drivers/mtd/nand/sunxi_nand_spl.c             | 353 ++++++++++++++++++++++++++
 include/configs/sunxi-common.h                |  10 +
 8 files changed, 438 insertions(+)
 create mode 100644 drivers/mtd/nand/sunxi_nand_spl.c

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2.3.6