tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#
2# linux/drivers/mtd/onenand/Kconfig
3#
4
5menuconfig MTD_ONENAND
6 tristate "OneNAND Device Support"
7 depends on MTD
8 help
9 This enables support for accessing all type of OneNAND flash
10 devices. For further information see
11 <http://www.samsung.com/Products/Semiconductor/OneNAND/index.htm>
12
13if MTD_ONENAND
14
15config MTD_ONENAND_VERIFY_WRITE
16 bool "Verify OneNAND page writes"
17 help
18 This adds an extra check when data is written to the flash. The
19 OneNAND flash device internally checks only bits transitioning
20 from 1 to 0. There is a rare possibility that even though the
21 device thinks the write was successful, a bit could have been
22 flipped accidentally due to device wear or something else.
23
24config MTD_ONENAND_GENERIC
25 tristate "OneNAND Flash device via platform device driver"
26 depends on ARM
27 help
28 Support for OneNAND flash via platform device driver.
29
30config MTD_ONENAND_OTP
31 bool "OneNAND OTP Support"
32 help
33 One Block of the NAND Flash Array memory is reserved as
34 a One-Time Programmable Block memory area.
35 Also, 1st Block of NAND Flash Array can be used as OTP.
36
37 The OTP block can be read, programmed and locked using the same
38 operations as any other NAND Flash Array memory block.
39 OTP block cannot be erased.
40
41 OTP block is fully-guaranteed to be a valid block.
42
43config MTD_ONENAND_2X_PROGRAM
44 bool "OneNAND 2X program support"
45 help
46 The 2X Program is an extension of Program Operation.
47 Since the device is equipped with two DataRAMs, and two-plane NAND
48 Flash memory array, these two component enables simultaneous program
49 of 4KiB. Plane1 has only even blocks such as block0, block2, block4
50 while Plane2 has only odd blocks such as block1, block3, block5.
51 So MTD regards it as 4KiB page size and 256KiB block size
52
53 Now the following chips support it. (KFXXX16Q2M)
54 Demux: KFG2G16Q2M, KFH4G16Q2M, KFW8G16Q2M,
55 Mux: KFM2G16Q2M, KFN4G16Q2M,
56
57 And more recent chips
58
59config MTD_ONENAND_SIM
60 tristate "OneNAND simulator support"
61 depends on MTD_PARTITIONS
62 help
63 The simulator may simulate various OneNAND flash chips for the
64 OneNAND MTD layer.
65
66endif # MTD_ONENAND