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add spi nand driver #50690

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add spi nand driver #50690

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2 changes: 2 additions & 0 deletions drivers/flash/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -67,6 +67,8 @@ zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_SMARTBOND flash_smartbond.c)
zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_TELINK_B91 soc_flash_b91.c)
zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_XMC4XXX soc_flash_xmc4xxx.c)
zephyr_library_sources_ifdef(CONFIG_SPI_FLASH_AT45 spi_flash_at45.c)
zephyr_library_sources_ifdef(CONFIG_SPI_NAND bch.c)
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Not to be fixed with this PR, but just want to mention that I will propose enhancement where bch implementation gets moved to CRC subsystem.

zephyr_library_sources_ifdef(CONFIG_SPI_NAND spi_nand.c)
zephyr_library_sources_ifdef(CONFIG_SPI_NOR spi_nor.c)
# zephyr-keep-sorted-stop

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1 change: 1 addition & 0 deletions drivers/flash/Kconfig
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Expand Up @@ -181,6 +181,7 @@ source "drivers/flash/Kconfig.lpc"
source "drivers/flash/Kconfig.max32"
source "drivers/flash/Kconfig.mcux"
source "drivers/flash/Kconfig.mspi"
source "drivers/flash/Kconfig.nand"
source "drivers/flash/Kconfig.nor"
source "drivers/flash/Kconfig.nordic_qspi_nor"
source "drivers/flash/Kconfig.npcx_fiu"
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48 changes: 48 additions & 0 deletions drivers/flash/Kconfig.nand
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Original file line number Diff line number Diff line change
@@ -0,0 +1,48 @@
# Copyright (c) 2022-2025 Macronix International Co., Ltd.
# SPDX-License-Identifier: Apache-2.0

menuconfig SPI_NAND
bool "SPI NAND Flash"
default y
depends on DT_HAS_JEDEC_SPI_NAND_ENABLED
select FLASH_HAS_DRIVER_ENABLED
select FLASH_HAS_EXPLICIT_ERASE
select FLASH_HAS_PAGE_LAYOUT
select SPI

if SPI_NAND

config SPI_NAND_INIT_PRIORITY
int
default 80
help
Device driver initialization priority.
Device is connected to SPI bus, it has to
be initialized after SPI driver.

config SPI_NAND_SOFTWARE_ECC
bool
default n
help
Enable this option to use software-based ECC (Error Correction Code)
when accessing SPI NAND flash devices. This is useful for platforms
that do not support hardware ECC, or when additional software control
over ECC handling is required.

config SPI_NAND_ECC_STEP_SIZE
int
default 512
depends on SPI_NAND_SOFTWARE_ECC
help
Specifies the ECC (Error Correction Code) step size in bytes for SPI NAND
flash operations. This value determines how many bytes of data are protected
by one ECC block.

config SPI_NAND_BCH_HEAP_SIZE
int
default 51200
help
Specify the heap size (in bytes) reserved for BCH (Bose-Chaudhuri-Hocquenghem)
error correction in SPI NAND flash operations.

endif # SPI_NAND
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