[PATCH v4 0/5] mtd: Qualcomm NAND controller driver

[Archit Taneja]

Add support for the NAND controller driver for SoC's that contain EBI2.
For now, the only SoC upstream that has EBI2 is IPQ806x.

The original version was posted a while back. The main comments were
about the driver not being able to use nand_bbt. This was because the
controller could read factory bad block markers only in RAW mode. This
forced us to implement our own versions of chip->block_bad and
chip->blobk_markbad, and also we had to skip creating a BBT.

Discussions with Kevin Cernekee concluded that having a new BBT flag
that incorporates this controller's special requirement is a possible
option.

The new version makes use of this flag and now uses nand_bbt, at the
cost of implement read_oob_raw and write_oob_raw ops.

The patchset requires the v6 ADM dmaengine patches posted by Andy:

https://lkml.org/lkml/2015/3/17/19

v4:
- Some more fixes. Mentioned in patch's changelog.

v3:
- Various fixes and clean ups suggested by Stephen Boyd.

v2:
- Added a new BBT flag that allows us to read BBM in raw mode
- reduce memcpy-s in the driver
- some refactor and clean ups because of above changes

v1:
- original series:
  https://lkml.org/lkml/2015/1/16/317

Archit Taneja (5):
  mtd: nand: Create a BBT flag to access bad block markers in raw mode
  mtd: nand: Qualcomm NAND controller driver
  dt/bindings: qcom_nandc: Add DT bindings
  arm: qcom: dts: Add NAND controller node for ipq806x
  arm: qcom: dts: Enable NAND node on IPQ8064 AP148 platform

 .../devicetree/bindings/mtd/qcom_nandc.txt         |   49 +
 arch/arm/boot/dts/qcom-ipq8064-ap148.dts           |   40 +
 arch/arm/boot/dts/qcom-ipq8064.dtsi                |   15 +
 drivers/mtd/nand/Kconfig                           |    7 +
 drivers/mtd/nand/Makefile                          |    1 +
 drivers/mtd/nand/nand_base.c                       |    6 +-
 drivers/mtd/nand/nand_bbt.c                        |    6 +-
 drivers/mtd/nand/qcom_nandc.c                      | 1910 ++++++++++++++++++++
 include/linux/mtd/bbm.h                            |    7 +
 9 files changed, 2039 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mtd/qcom_nandc.txt
 create mode 100644 drivers/mtd/nand/qcom_nandc.c

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