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