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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / e70cc438311c753edc1f19214ffc090061e60880 / . / drivers / mtd / spi / Kconfig
blob: 3f7433cbc214b76a7120886f858047d64b51744c [file] [log] [blame]
Jagan Teki810fd692015-06-27 22:39:36 +0530[diff] [blame]1menu "SPI Flash Support"
2
Simon Glassf94a1be2015-02-05 21:41:35 -0700[diff] [blame]3config DM_SPI_FLASH
4 bool "Enable Driver Model for SPI flash"
Masahiro Yamadab3d023b2015-03-31 12:47:52 +0900[diff] [blame]5 depends on DM && DM_SPI
Simon Glassf94a1be2015-02-05 21:41:35 -0700[diff] [blame]6 help
7 Enable driver model for SPI flash. This SPI flash interface
8 (spi_flash_probe(), spi_flash_write(), etc.) is then
9 implemented by the SPI flash uclass. There is one standard
10 SPI flash driver which knows how to probe most chips
11 supported by U-Boot. The uclass interface is defined in
12 include/spi_flash.h, but is currently fully compatible
13 with the old interface to avoid confusion and duplication
14 during the transition parent. SPI and SPI flash must be
15 enabled together (it is not possible to use driver model
16 for one and not the other).
Simon Glass949dd812015-03-06 13:19:06 -0700[diff] [blame]17
18config SPI_FLASH_SANDBOX
19 bool "Support sandbox SPI flash device"
20 depends on SANDBOX && DM_SPI_FLASH
21 help
22 Since sandbox cannot access real devices, an emulation mechanism is
23 provided instead. Drivers can be connected up to the sandbox SPI
24 bus (see CONFIG_SANDBOX_SPI) and SPI traffic will be routed to this
25 device. Typically the contents of the emulated SPI flash device is
26 stored in a file on the host filesystem.
Jagan Teki810fd692015-06-27 22:39:36 +0530[diff] [blame]27
Jagan Teki2ce7e2b2015-06-29 00:59:36 +0530[diff] [blame]28config SPI_FLASH
29 bool "Legacy SPI Flash Interface support"
30 help
31 Enable the legacy SPI flash support. This will include basic
32 standard support for things like probing, read / write, and
33 erasing through cmd_sf interface.
34
35 If unsure, say N
36
Jagan Teki84d31b32015-06-29 23:32:17 +0530[diff] [blame]37config SPI_FLASH_BAR
38 bool "SPI flash Bank/Extended address register support"
39 depends on SPI_FLASH
40 help
41 Enable the SPI flash Bank/Extended address register support.
42 Bank/Extended address registers are used to access the flash
43 which has size > 16MiB in 3-byte addressing.
44
Nikita Kiryanovd5af9232015-07-23 17:19:38 +0300[diff] [blame]45if SPI_FLASH
46
47config SPI_FLASH_ATMEL
48 bool "Atmel SPI flash support"
49 help
50 Add support for various Atmel SPI flash chips (AT45xxx and AT25xxx)
51
52config SPI_FLASH_EON
53 bool "EON SPI flash support"
54 help
55 Add support for various EON SPI flash chips (EN25xxx)
56
57config SPI_FLASH_GIGADEVICE
58 bool "GigaDevice SPI flash support"
59 help
60 Add support for various GigaDevice SPI flash chips (GD25xxx)
61
62config SPI_FLASH_MACRONIX
63 bool "Macronix SPI flash support"
64 help
65 Add support for various Macronix SPI flash chips (MX25Lxxx)
66
67config SPI_FLASH_SPANSION
68 bool "Spansion SPI flash support"
69 help
70 Add support for various Spansion SPI flash chips (S25FLxxx)
71
72config SPI_FLASH_STMICRO
73 bool "STMicro SPI flash support"
74 help
75 Add support for various STMicro SPI flash chips (M25Pxxx and N25Qxxx)
76
77config SPI_FLASH_SST
78 bool "SST SPI flash support"
79 help
80 Add support for various SST SPI flash chips (SST25xxx)
81
82config SPI_FLASH_WINBOND
83 bool "Winbond SPI flash support"
84 help
85 Add support for various Winbond SPI flash chips (W25xxx)
86
87endif
88
Marek Vasut0a026552015-08-03 01:28:56 +0200[diff] [blame]89config SPI_FLASH_USE_4K_SECTORS
90 bool "Use small 4096 B erase sectors"
91 depends on SPI_FLASH
92 default y
93 help
94 Many flash memories support erasing small (4096 B) sectors. Depending
95 on the usage this feature may provide performance gain in comparison
96 to erasing whole blocks (32/64 KiB).
97 Changing a small part of the flash's contents is usually faster with
98 small sectors. On the other hand erasing should be faster when using
99 64 KiB block instead of 16 × 4 KiB sectors.
100
101 Please note that some tools/drivers/filesystems may not work with
102 4096 B erase size (e.g. UBIFS requires 15 KiB as a minimum).
103
Jagan Tekicd9accd2015-07-01 21:22:19 +0530[diff] [blame]104config SPI_FLASH_DATAFLASH
105 bool "AT45xxx DataFlash support"
106 depends on SPI_FLASH && DM_SPI_FLASH
107 help
108 Enable the access for SPI-flash-based AT45xxx DataFlash chips.
109 DataFlash is a kind of SPI flash. Most AT45 chips have two buffers
110 in each chip, which may be used for double buffered I/O; but this
111 driver doesn't (yet) use these for any kind of i/o overlap or prefetching.
112
113 Sometimes DataFlash is packaged in MMC-format cards, although the
114 MMC stack can't (yet?) distinguish between MMC and DataFlash
115 protocols during enumeration.
116
117 If unsure, say N
118
Jagan Teki7678dd92015-06-27 22:42:35 +0530[diff] [blame]119config SPI_FLASH_MTD
120 bool "SPI Flash MTD support"
121 depends on SPI_FLASH
122 help
123 Enable the MTD support for spi flash layer, this adapter is for
124 translating mtd_read/mtd_write commands into spi_flash_read/write
125 commands. It is not intended to use it within sf_cmd or the SPI
126 flash subsystem. Such an adapter is needed for subsystems like
127 UBI which can only operate on top of the MTD layer.
128
129 If unsure, say N
130
Jagan Teki810fd692015-06-27 22:39:36 +0530[diff] [blame]131endmenu # menu "SPI Flash Support"