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1# SPDX-License-Identifier: GPL-2.0-only
2menu "EEPROM support"
3
4config EEPROM_AT24
5 tristate "I2C EEPROMs / RAMs / ROMs from most vendors"
6 depends on I2C && SYSFS
7 select NVMEM
8 select NVMEM_SYSFS
9 select REGMAP
10 select REGMAP_I2C
11 help
12 Enable this driver to get read/write support to most I2C EEPROMs
13 and compatible devices like FRAMs, SRAMs, ROMs etc. After you
14 configure the driver to know about each chip on your target
15 board. Use these generic chip names, instead of vendor-specific
16 ones like at24c64, 24lc02 or fm24c04:
17
18 24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08,
19 24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048
20
21 Unless you like data loss puzzles, always be sure that any chip
22 you configure as a 24c32 (32 kbit) or larger is NOT really a
23 24c16 (16 kbit) or smaller, and vice versa. Marking the chip
24 as read-only won't help recover from this. Also, if your chip
25 has any software write-protect mechanism you may want to review the
26 code to make sure this driver won't turn it on by accident.
27
28 If you use this with an SMBus adapter instead of an I2C adapter,
29 full functionality is not available. Only smaller devices are
30 supported (24c16 and below, max 4 kByte).
31
32 This driver can also be built as a module. If so, the module
33 will be called at24.
34
35config EEPROM_AT25
36 tristate "SPI EEPROMs (FRAMs) from most vendors"
37 depends on SPI && SYSFS
38 select NVMEM
39 select NVMEM_SYSFS
40 select SPI_MEM
41 help
42 Enable this driver to get read/write support to most SPI EEPROMs
43 and Cypress FRAMs,
44 after you configure the board init code to know about each eeprom
45 on your target board.
46
47 This driver can also be built as a module. If so, the module
48 will be called at25.
49
50config EEPROM_MAX6875
51 tristate "Maxim MAX6874/5 power supply supervisor"
52 depends on I2C
53 help
54 If you say yes here you get read-only support for the user EEPROM of
55 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply
56 sequencer/supervisor.
57
58 All other features of this chip should be accessed via i2c-dev.
59
60 This driver can also be built as a module. If so, the module
61 will be called max6875.
62
63
64config EEPROM_93CX6
65 tristate "EEPROM 93CX6 support"
66 help
67 This is a driver for the EEPROM chipsets 93c46 and 93c66.
68 The driver supports both read as well as write commands.
69
70 If unsure, say N.
71
72config EEPROM_93XX46
73 tristate "Microwire EEPROM 93XX46 support"
74 depends on SPI && SYSFS
75 select REGMAP
76 select NVMEM
77 select NVMEM_SYSFS
78 help
79 Driver for the microwire EEPROM chipsets 93xx46x. The driver
80 supports both read and write commands and also the command to
81 erase the whole EEPROM.
82
83 This driver can also be built as a module. If so, the module
84 will be called eeprom_93xx46.
85
86 If unsure, say N.
87
88config EEPROM_DIGSY_MTC_CFG
89 bool "DigsyMTC display configuration EEPROMs device"
90 depends on GPIO_MPC5200 && SPI_GPIO
91 help
92 This option enables access to display configuration EEPROMs
93 on digsy_mtc board. You have to additionally select Microwire
94 EEPROM 93XX46 driver. sysfs entries will be created for that
95 EEPROM allowing to read/write the configuration data or to
96 erase the whole EEPROM.
97
98 If unsure, say N.
99
100config EEPROM_IDT_89HPESX
101 tristate "IDT 89HPESx PCIe-switches EEPROM / CSR support"
102 depends on I2C && SYSFS
103 help
104 Enable this driver to get read/write access to EEPROM / CSRs
105 over IDT PCIe-switch i2c-slave interface.
106
107 This driver can also be built as a module. If so, the module
108 will be called idt_89hpesx.
109
110config EEPROM_EE1004
111 tristate "SPD EEPROMs on DDR4 memory modules"
112 depends on I2C && SYSFS
113 select NVMEM
114 select NVMEM_SYSFS
115 help
116 Enable this driver to get read support to SPD EEPROMs following
117 the JEDEC EE1004 standard. These are typically found on DDR4
118 SDRAM memory modules.
119
120 This driver can also be built as a module. If so, the module
121 will be called ee1004.
122
123config EEPROM_M24LR
124 tristate "STMicroelectronics M24LR RFID/NFC EEPROM support"
125 depends on I2C && SYSFS
126 select REGMAP_I2C
127 select NVMEM
128 select NVMEM_SYSFS
129 help
130 This enables support for STMicroelectronics M24LR RFID/NFC EEPROM
131 chips. These dual-interface devices expose two I2C addresses:
132 one for EEPROM memory access and another for control and system
133 configuration (e.g. UID, password handling).
134
135 This driver provides a sysfs interface for control functions and
136 integrates with the nvmem subsystem for EEPROM access.
137
138 To compile this driver as a module, choose M here: the
139 module will be called m24lr.
140
141endmenu