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	depends on OMAP_GPMC
30	help
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.
34
35config MTD_ONENAND_SAMSUNG
36	tristate "OneNAND on Samsung SOC controller support"
37	depends on ARCH_S3C64XX || ARCH_S5PV210 || COMPILE_TEST
38	help
39	  Support for a OneNAND flash device connected to Samsung S3C64XX
40	  (using command mapping method) and S5PC110/S5PC210 (using generic
41	  OneNAND method) SoCs.
42	  Choose Y here only if you build for such Samsung SoC.
43
44config MTD_ONENAND_OTP
45	bool "OneNAND OTP Support"
46	help
47	  One Block of the NAND Flash Array memory is reserved as
48	  a One-Time Programmable Block memory area.
49	  Also, 1st Block of NAND Flash Array can be used as OTP.
50
51	  The OTP block can be read, programmed and locked using the same
52	  operations as any other NAND Flash Array memory block.
53	  OTP block cannot be erased.
54
55	  OTP block is fully-guaranteed to be a valid block.
56
57config MTD_ONENAND_2X_PROGRAM
58	bool "OneNAND 2X program support"
59	help
60	  The 2X Program is an extension of Program Operation.
61	  Since the device is equipped with two DataRAMs, and two-plane NAND
62	  Flash memory array, these two component enables simultaneous program
63	  of 4KiB. Plane1 has only even blocks such as block0, block2, block4
64	  while Plane2 has only odd blocks such as block1, block3, block5.
65	  So MTD regards it as 4KiB page size and 256KiB block size
66
67	  Now the following chips support it. (KFXXX16Q2M)
68	    Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
69	    Mux:   KFM2G16Q2M, KFN4G16Q2M,
70
71	  And more recent chips
72
73endif # MTD_ONENAND
74