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[thirdparty/linux.git] / drivers / misc / eeprom / Kconfig
1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "EEPROM support"
3
4 config EEPROM_AT24
5 tristate "I2C EEPROMs / RAMs / ROMs from most vendors"
6 depends on I2C && SYSFS
7 select NVMEM
8 select REGMAP_I2C
9 help
10 Enable this driver to get read/write support to most I2C EEPROMs
11 and compatible devices like FRAMs, SRAMs, ROMs etc. After you
12 configure the driver to know about each chip on your target
13 board. Use these generic chip names, instead of vendor-specific
14 ones like at24c64, 24lc02 or fm24c04:
15
16 24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08,
17 24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048
18
19 Unless you like data loss puzzles, always be sure that any chip
20 you configure as a 24c32 (32 kbit) or larger is NOT really a
21 24c16 (16 kbit) or smaller, and vice versa. Marking the chip
22 as read-only won't help recover from this. Also, if your chip
23 has any software write-protect mechanism you may want to review the
24 code to make sure this driver won't turn it on by accident.
25
26 If you use this with an SMBus adapter instead of an I2C adapter,
27 full functionality is not available. Only smaller devices are
28 supported (24c16 and below, max 4 kByte).
29
30 This driver can also be built as a module. If so, the module
31 will be called at24.
32
33 config EEPROM_AT25
34 tristate "SPI EEPROMs from most vendors"
35 depends on SPI && SYSFS
36 select NVMEM
37 help
38 Enable this driver to get read/write support to most SPI EEPROMs,
39 after you configure the board init code to know about each eeprom
40 on your target board.
41
42 This driver can also be built as a module. If so, the module
43 will be called at25.
44
45 config EEPROM_LEGACY
46 tristate "Old I2C EEPROM reader"
47 depends on I2C && SYSFS
48 help
49 If you say yes here you get read-only access to the EEPROM data
50 available on modern memory DIMMs and Sony Vaio laptops via I2C. Such
51 EEPROMs could theoretically be available on other devices as well.
52
53 This driver can also be built as a module. If so, the module
54 will be called eeprom.
55
56 config EEPROM_MAX6875
57 tristate "Maxim MAX6874/5 power supply supervisor"
58 depends on I2C
59 help
60 If you say yes here you get read-only support for the user EEPROM of
61 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply
62 sequencer/supervisor.
63
64 All other features of this chip should be accessed via i2c-dev.
65
66 This driver can also be built as a module. If so, the module
67 will be called max6875.
68
69
70 config EEPROM_93CX6
71 tristate "EEPROM 93CX6 support"
72 help
73 This is a driver for the EEPROM chipsets 93c46 and 93c66.
74 The driver supports both read as well as write commands.
75
76 If unsure, say N.
77
78 config EEPROM_93XX46
79 tristate "Microwire EEPROM 93XX46 support"
80 depends on SPI && SYSFS
81 select REGMAP
82 select NVMEM
83 help
84 Driver for the microwire EEPROM chipsets 93xx46x. The driver
85 supports both read and write commands and also the command to
86 erase the whole EEPROM.
87
88 This driver can also be built as a module. If so, the module
89 will be called eeprom_93xx46.
90
91 If unsure, say N.
92
93 config EEPROM_DIGSY_MTC_CFG
94 bool "DigsyMTC display configuration EEPROMs device"
95 depends on GPIO_MPC5200 && SPI_GPIO
96 help
97 This option enables access to display configuration EEPROMs
98 on digsy_mtc board. You have to additionally select Microwire
99 EEPROM 93XX46 driver. sysfs entries will be created for that
100 EEPROM allowing to read/write the configuration data or to
101 erase the whole EEPROM.
102
103 If unsure, say N.
104
105 config EEPROM_IDT_89HPESX
106 tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support"
107 depends on I2C && SYSFS
108 help
109 Enable this driver to get read/write access to EEPROM / CSRs
110 over IDT PCIe-swtich i2c-slave interface.
111
112 This driver can also be built as a module. If so, the module
113 will be called idt_89hpesx.
114
115 config EEPROM_EE1004
116 tristate "SPD EEPROMs on DDR4 memory modules"
117 depends on I2C && SYSFS
118 help
119 Enable this driver to get read support to SPD EEPROMs following
120 the JEDEC EE1004 standard. These are typically found on DDR4
121 SDRAM memory modules.
122
123 This driver can also be built as a module. If so, the module
124 will be called ee1004.
125
126 endmenu