drivers: Flash: Add SPI NAND Flash driver support

Add SPI NAND Flash driver support

Signed-off-by: Daniel Zhang <[email protected]>

drivers/flash/CMakeLists.txt

@@ -63,6 +63,8 @@ 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)
+zephyr_library_sources_ifdef(CONFIG_SPI_NAND spi_nand.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_NOR spi_nor.c)
 # zephyr-keep-sorted-stop
 

drivers/flash/Kconfig

@@ -180,6 +180,7 @@ 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.nios2_qspi"
 source "drivers/flash/Kconfig.nor"
 source "drivers/flash/Kconfig.nordic_qspi_nor"

drivers/flash/Kconfig.nand

@@ -0,0 +1,38 @@
+# Copyright (c) 2022 Macronix International Co., Ltd.
+# 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