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 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 33config 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 45config 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 56config 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 70config 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 78config 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 93config 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 105config 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 115config 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 126endmenu 127