xref: /openbmc/linux/drivers/mtd/nand/onenand/Kconfig (revision 6c33a6f4)
1# SPDX-License-Identifier: GPL-2.0-only
2menuconfig MTD_ONENAND
3	tristate "OneNAND Device Support"
4	depends on MTD
5	depends on HAS_IOMEM
6	help
7	  This enables support for accessing all type of OneNAND flash
8	  devices.
9
10if MTD_ONENAND
11
12config MTD_ONENAND_VERIFY_WRITE
13	bool "Verify OneNAND page writes"
14	help
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.
20
21config MTD_ONENAND_GENERIC
22	tristate "OneNAND Flash device via platform device driver"
23	help
24	  Support for OneNAND flash via platform device driver.
25
26config MTD_ONENAND_OMAP2
27	tristate "OneNAND on OMAP2/OMAP3 support"
28	depends on ARCH_OMAP2 || ARCH_OMAP3 || (COMPILE_TEST && ARM)
29	depends on OF || COMPILE_TEST
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 || ARCH_EXYNOS4 || COMPILE_TEST
38	help
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.
42
43config MTD_ONENAND_OTP
44	bool "OneNAND OTP Support"
45	help
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.
49
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.
53
54	  OTP block is fully-guaranteed to be a valid block.
55
56config MTD_ONENAND_2X_PROGRAM
57	bool "OneNAND 2X program support"
58	help
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
65
66	  Now the following chips support it. (KFXXX16Q2M)
67	    Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
68	    Mux:   KFM2G16Q2M, KFN4G16Q2M,
69
70	  And more recent chips
71
72endif # MTD_ONENAND
73