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add SPI NAND Flash driver #43915

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add SPI NAND Flash driver #43915

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45877b4
add for SPI NAND
rogeryou Oct 20, 2021
ddad2b7
add spi nand driver
rogeryou Mar 17, 2022
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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 @@ -4,6 +4,8 @@ zephyr_library()

zephyr_library_sources_ifdef(CONFIG_SOC_FLASH_TELINK_B91 soc_flash_b91.c)
zephyr_library_sources_ifdef(CONFIG_SPI_NOR spi_nor.c)
zephyr_library_sources_ifdef(CONFIG_SPI_NAND spi_nand.c)
zephyr_library_sources_ifdef(CONFIG_SPI_NAND bch.c)
zephyr_library_sources_ifdef(CONFIG_NORDIC_QSPI_NOR nrf_qspi_nor.c)
zephyr_library_sources_ifdef(CONFIG_FLASH_SIMULATOR flash_simulator.c)
zephyr_library_sources_ifdef(CONFIG_SPI_FLASH_AT45 spi_flash_at45.c)
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2 changes: 2 additions & 0 deletions drivers/flash/Kconfig
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Expand Up @@ -78,6 +78,8 @@ source "drivers/flash/Kconfig.gecko"

source "drivers/flash/Kconfig.nor"

source "drivers/flash/Kconfig.nand"

source "drivers/flash/Kconfig.stm32"

source "drivers/flash/Kconfig.stm32_qspi"
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38 changes: 38 additions & 0 deletions drivers/flash/Kconfig.nand
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@@ -0,0 +1,38 @@
# Copyright (c) 2018 Savoir-Faire Linux.
# SPDX-License-Identifier: Apache-2.0

menuconfig SPI_NAND
bool "SPI NAND Flash"
select FLASH_HAS_DRIVER_ENABLED
select FLASH_HAS_PAGE_LAYOUT
depends on 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_CS_WAIT_DELAY
int "Delay time in us"
default 0
help
This is the wait delay (in us) to allow for CS switching to take effect

config SPI_NAND_IDLE_IN_DPD
bool "Use Deep Power-Down mode when flash is not being accessed."
help
Where supported deep power-down mode can reduce current draw
to as little as 0.1% of standby current. However it takes
some milliseconds to enter and exit from this mode.

Select this option for applications where device power
management is not enabled, the flash remains inactive for
long periods, and when used the impact of waiting for mode
enter and exit delays is acceptable.

endif # SPI_NAND
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