tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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 help
41 Enable this driver to get read/write support to most SPI EEPROMs
42 and Cypress FRAMs,
43 after you configure the board init code to know about each eeprom
44 on your target board.
45
46 This driver can also be built as a module. If so, the module
47 will be called at25.
48
49config EEPROM_LEGACY
50 tristate "Old I2C EEPROM reader (DEPRECATED)"
51 depends on I2C && SYSFS
52 help
53 If you say yes here you get read-only access to the EEPROM data
54 available on modern memory DIMMs and Sony Vaio laptops via I2C. Such
55 EEPROMs could theoretically be available on other devices as well.
56
57 This driver is deprecated and will be removed soon, please use the
58 better at24 driver instead.
59
60 This driver can also be built as a module. If so, the module
61 will be called eeprom.
62
63config EEPROM_MAX6875
64 tristate "Maxim MAX6874/5 power supply supervisor"
65 depends on I2C
66 help
67 If you say yes here you get read-only support for the user EEPROM of
68 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply
69 sequencer/supervisor.
70
71 All other features of this chip should be accessed via i2c-dev.
72
73 This driver can also be built as a module. If so, the module
74 will be called max6875.
75
76
77config EEPROM_93CX6
78 tristate "EEPROM 93CX6 support"
79 help
80 This is a driver for the EEPROM chipsets 93c46 and 93c66.
81 The driver supports both read as well as write commands.
82
83 If unsure, say N.
84
85config EEPROM_93XX46
86 tristate "Microwire EEPROM 93XX46 support"
87 depends on SPI && SYSFS
88 select REGMAP
89 select NVMEM
90 select NVMEM_SYSFS
91 help
92 Driver for the microwire EEPROM chipsets 93xx46x. The driver
93 supports both read and write commands and also the command to
94 erase the whole EEPROM.
95
96 This driver can also be built as a module. If so, the module
97 will be called eeprom_93xx46.
98
99 If unsure, say N.
100
101config EEPROM_DIGSY_MTC_CFG
102 bool "DigsyMTC display configuration EEPROMs device"
103 depends on GPIO_MPC5200 && SPI_GPIO
104 help
105 This option enables access to display configuration EEPROMs
106 on digsy_mtc board. You have to additionally select Microwire
107 EEPROM 93XX46 driver. sysfs entries will be created for that
108 EEPROM allowing to read/write the configuration data or to
109 erase the whole EEPROM.
110
111 If unsure, say N.
112
113config EEPROM_IDT_89HPESX
114 tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support"
115 depends on I2C && SYSFS
116 help
117 Enable this driver to get read/write access to EEPROM / CSRs
118 over IDT PCIe-swtich i2c-slave interface.
119
120 This driver can also be built as a module. If so, the module
121 will be called idt_89hpesx.
122
123config EEPROM_EE1004
124 tristate "SPD EEPROMs on DDR4 memory modules"
125 depends on I2C && SYSFS
126 help
127 Enable this driver to get read support to SPD EEPROMs following
128 the JEDEC EE1004 standard. These are typically found on DDR4
129 SDRAM memory modules.
130
131 This driver can also be built as a module. If so, the module
132 will be called ee1004.
133
134endmenu