LXR linux/drivers/mtd/nand/onenand/Kconfig

   1# SPDX-License-Identifier: GPL-2.0-only
   2menuconfig MTD_ONENAND
   3        tristate "OneNAND Device Support"
   4        depends on HAS_IOMEM
   5        help
   6          This enables support for accessing all type of OneNAND flash
   7          devices.
   8
   9if MTD_ONENAND
  10
  11config MTD_ONENAND_VERIFY_WRITE
  12        bool "Verify OneNAND page writes"
  13        help
  14          This adds an extra check when data is written to the flash. The
  15          OneNAND flash device internally checks only bits transitioning
  16          from 1 to 0. There is a rare possibility that even though the
  17          device thinks the write was successful, a bit could have been
  18          flipped accidentally due to device wear or something else.
  19
  20config MTD_ONENAND_GENERIC
  21        tristate "OneNAND Flash device via platform device driver"
  22        help
  23          Support for OneNAND flash via platform device driver.
  24
  25config MTD_ONENAND_OMAP2
  26        tristate "OneNAND on OMAP2/OMAP3 support"
  27        depends on ARCH_OMAP2 || ARCH_OMAP3 || (COMPILE_TEST && ARM)
  28        depends on OF || COMPILE_TEST
  29        help
  30          Support for a OneNAND flash device connected to an OMAP2/OMAP3 SoC
  31          via the GPMC memory controller.
  32          Enable dmaengine and gpiolib for better performance.
  33
  34config MTD_ONENAND_SAMSUNG
  35        tristate "OneNAND on Samsung SOC controller support"
  36        depends on ARCH_S3C64XX || ARCH_S5PV210 || ARCH_EXYNOS4 || COMPILE_TEST
  37        help
  38          Support for a OneNAND flash device connected to an Samsung SOC.
  39          S3C64XX uses command mapping method.
  40          S5PC110/S5PC210 use generic OneNAND method.
  41
  42config MTD_ONENAND_OTP
  43        bool "OneNAND OTP Support"
  44        help
  45          One Block of the NAND Flash Array memory is reserved as
  46          a One-Time Programmable Block memory area.
  47          Also, 1st Block of NAND Flash Array can be used as OTP.
  48
  49          The OTP block can be read, programmed and locked using the same
  50          operations as any other NAND Flash Array memory block.
  51          OTP block cannot be erased.
  52
  53          OTP block is fully-guaranteed to be a valid block.
  54
  55config MTD_ONENAND_2X_PROGRAM
  56        bool "OneNAND 2X program support"
  57        help
  58          The 2X Program is an extension of Program Operation.
  59          Since the device is equipped with two DataRAMs, and two-plane NAND
  60          Flash memory array, these two component enables simultaneous program
  61          of 4KiB. Plane1 has only even blocks such as block0, block2, block4
  62          while Plane2 has only odd blocks such as block1, block3, block5.
  63          So MTD regards it as 4KiB page size and 256KiB block size
  64
  65          Now the following chips support it. (KFXXX16Q2M)
  66            Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
  67            Mux:   KFM2G16Q2M, KFN4G16Q2M,
  68
  69          And more recent chips
  70
  71endif # MTD_ONENAND
  72