[PATCH v4 0/5] mtd: Qualcomm NAND controller driver
From: Archit Taneja
Date: Wed Aug 19 2015 - 00:49:28 EST
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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