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