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mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver

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The driver adds the support for the STMicroelectronics FMC2 NAND
Controller found on STM32MP SOCs.

This patch adds the polling mode, a basic mode that do not need
any DMA channels.

Only NAND_ECC_HW mode is actually supported.
The driver supports a maximum 8k page size.
The following ECC strength and step size are currently supported:
 - nand-ecc-strength = <8>, nand-ecc-step-size = <512> (BCH8)
 - nand-ecc-strength = <4>, nand-ecc-step-size = <512> (BCH4)
 - nand-ecc-strength = <1>, nand-ecc-step-size = <512> (Extended ECC
   based on Hamming)

This patch has been tested on Micron MT29F8G08ABACAH4.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
This commit is contained in:
Christophe Kerello 2019-04-05 11:41:50 +02:00 committed by Patrick Delaunay
parent 6899385f41
commit 7bb75023a7
3 changed files with 1104 additions and 0 deletions
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11
drivers/mtd/nand/raw/Kconfig
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@ -256,6 +256,17 @@ config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
This flag prevent U-boot reconfigure NAND flash controller and reuse This flag prevent U-boot reconfigure NAND flash controller and reuse
the NAND timing from 1st stage bootloader. the NAND timing from 1st stage bootloader.
config NAND_STM32_FMC2
bool "Support for NAND controller on STM32MP SoCs"
depends on ARCH_STM32MP
select SYS_NAND_SELF_INIT
imply CMD_NAND
help
Enables support for NAND Flash chips on SoCs containing the FMC2
NAND controller. This controller is found on STM32MP SoCs.
The controller supports a maximum 8k page size and supports
a maximum 8-bit correction error per sector of 512 bytes.
comment "Generic NAND options" comment "Generic NAND options"
config SYS_NAND_BLOCK_SIZE config SYS_NAND_BLOCK_SIZE

1
drivers/mtd/nand/raw/Makefile
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@ -65,6 +65,7 @@ obj-$(CONFIG_NAND_OMAP_ELM) += omap_elm.o
obj-$(CONFIG_NAND_PLAT) += nand_plat.o obj-$(CONFIG_NAND_PLAT) += nand_plat.o
obj-$(CONFIG_NAND_SUNXI) += sunxi_nand.o obj-$(CONFIG_NAND_SUNXI) += sunxi_nand.o
obj-$(CONFIG_NAND_ZYNQ) += zynq_nand.o obj-$(CONFIG_NAND_ZYNQ) += zynq_nand.o
obj-$(CONFIG_NAND_STM32_FMC2) += stm32_fmc2_nand.o
else # minimal SPL drivers else # minimal SPL drivers

1092
drivers/mtd/nand/raw/stm32_fmc2_nand.c Normal file
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