From 7bb75023a720432a32840c6df543aae92653b23d Mon Sep 17 00:00:00 2001 From: Christophe Kerello Date: Fri, 5 Apr 2019 11:41:50 +0200 Subject: mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver 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 --- drivers/mtd/nand/raw/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/mtd/nand/raw/Kconfig') diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index 7f76e5ecef..dc087ab641 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -256,6 +256,17 @@ config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS This flag prevent U-boot reconfigure NAND flash controller and reuse 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" config SYS_NAND_BLOCK_SIZE -- cgit