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mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver

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Add support for the NAND flash controller found on NVIDIA
Tegra 2 SoCs. This implementation does not make use of the
command queue feature. Regular operations using ->exec_op()
use PIO mode for data transfers. Raw, ECC and OOB read/writes
make use of the DMA mode for data transfer.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Stefan Agner 2018-06-24 23:27:25 +02:00 committed by Miquel Raynal
parent f8a53187a2
commit d7d9f8ec77
4 changed files with 1248 additions and 0 deletions
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7
MAINTAINERS
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@ -14054,6 +14054,13 @@ M: Laxman Dewangan <ldewangan@nvidia.com>
S: Supported
F: drivers/input/keyboard/tegra-kbc.c
TEGRA NAND DRIVER
M: Stefan Agner <stefan@agner.ch>
M: Lucas Stach <dev@lynxeye.de>
S: Maintained
F: Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
F: drivers/mtd/nand/raw/tegra_nand.c
TEGRA PWM DRIVER
M: Thierry Reding <thierry.reding@gmail.com>
S: Supported

10
drivers/mtd/nand/raw/Kconfig
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@ -530,4 +530,14 @@ config MTD_NAND_MTK
Enables support for NAND controller on MTK SoCs.
This controller is found on mt27xx, mt81xx, mt65xx SoCs.
config MTD_NAND_TEGRA
tristate "Support for NAND controller on NVIDIA Tegra"
depends on ARCH_TEGRA || COMPILE_TEST
help
Enables support for NAND flash controller on NVIDIA Tegra SoC.
The driver has been developed and tested on a Tegra 2 SoC. DMA
support, raw read/write page as well as HW ECC read/write page
is supported. Extra OOB bytes when using HW ECC are currently
not supported.
endif # MTD_NAND

1
drivers/mtd/nand/raw/Makefile
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@ -56,6 +56,7 @@ obj-$(CONFIG_MTD_NAND_HISI504) += hisi504_nand.o
obj-$(CONFIG_MTD_NAND_BRCMNAND) += brcmnand/
obj-$(CONFIG_MTD_NAND_QCOM) += qcom_nandc.o
obj-$(CONFIG_MTD_NAND_MTK) += mtk_ecc.o mtk_nand.o
obj-$(CONFIG_MTD_NAND_TEGRA) += tegra_nand.o
nand-objs := nand_base.o nand_bbt.o nand_timings.o nand_ids.o
nand-objs += nand_amd.o

1230
drivers/mtd/nand/raw/tegra_nand.c Normal file
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