xref: /openbmc/linux/drivers/misc/eeprom/Kconfig (revision 7f3c782b)
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
135