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_I2C 10 help 11 Enable this driver to get read/write support to most I2C EEPROMs 12 and compatible devices like FRAMs, SRAMs, ROMs etc. After you 13 configure the driver to know about each chip on your target 14 board. Use these generic chip names, instead of vendor-specific 15 ones like at24c64, 24lc02 or fm24c04: 16 17 24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08, 18 24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048 19 20 Unless you like data loss puzzles, always be sure that any chip 21 you configure as a 24c32 (32 kbit) or larger is NOT really a 22 24c16 (16 kbit) or smaller, and vice versa. Marking the chip 23 as read-only won't help recover from this. Also, if your chip 24 has any software write-protect mechanism you may want to review the 25 code to make sure this driver won't turn it on by accident. 26 27 If you use this with an SMBus adapter instead of an I2C adapter, 28 full functionality is not available. Only smaller devices are 29 supported (24c16 and below, max 4 kByte). 30 31 This driver can also be built as a module. If so, the module 32 will be called at24. 33 34config EEPROM_AT25 35 tristate "SPI EEPROMs from most vendors" 36 depends on SPI && SYSFS 37 select NVMEM 38 select NVMEM_SYSFS 39 help 40 Enable this driver to get read/write support to most SPI EEPROMs, 41 after you configure the board init code to know about each eeprom 42 on your target board. 43 44 This driver can also be built as a module. If so, the module 45 will be called at25. 46 47config EEPROM_LEGACY 48 tristate "Old I2C EEPROM reader" 49 depends on I2C && SYSFS 50 help 51 If you say yes here you get read-only access to the EEPROM data 52 available on modern memory DIMMs and Sony Vaio laptops via I2C. Such 53 EEPROMs could theoretically be available on other devices as well. 54 55 This driver can also be built as a module. If so, the module 56 will be called eeprom. 57 58config EEPROM_MAX6875 59 tristate "Maxim MAX6874/5 power supply supervisor" 60 depends on I2C 61 help 62 If you say yes here you get read-only support for the user EEPROM of 63 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply 64 sequencer/supervisor. 65 66 All other features of this chip should be accessed via i2c-dev. 67 68 This driver can also be built as a module. If so, the module 69 will be called max6875. 70 71 72config EEPROM_93CX6 73 tristate "EEPROM 93CX6 support" 74 help 75 This is a driver for the EEPROM chipsets 93c46 and 93c66. 76 The driver supports both read as well as write commands. 77 78 If unsure, say N. 79 80config EEPROM_93XX46 81 tristate "Microwire EEPROM 93XX46 support" 82 depends on SPI && SYSFS 83 select REGMAP 84 select NVMEM 85 select NVMEM_SYSFS 86 help 87 Driver for the microwire EEPROM chipsets 93xx46x. The driver 88 supports both read and write commands and also the command to 89 erase the whole EEPROM. 90 91 This driver can also be built as a module. If so, the module 92 will be called eeprom_93xx46. 93 94 If unsure, say N. 95 96config EEPROM_DIGSY_MTC_CFG 97 bool "DigsyMTC display configuration EEPROMs device" 98 depends on GPIO_MPC5200 && SPI_GPIO 99 help 100 This option enables access to display configuration EEPROMs 101 on digsy_mtc board. You have to additionally select Microwire 102 EEPROM 93XX46 driver. sysfs entries will be created for that 103 EEPROM allowing to read/write the configuration data or to 104 erase the whole EEPROM. 105 106 If unsure, say N. 107 108config EEPROM_IDT_89HPESX 109 tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support" 110 depends on I2C && SYSFS 111 help 112 Enable this driver to get read/write access to EEPROM / CSRs 113 over IDT PCIe-swtich i2c-slave interface. 114 115 This driver can also be built as a module. If so, the module 116 will be called idt_89hpesx. 117 118config EEPROM_EE1004 119 tristate "SPD EEPROMs on DDR4 memory modules" 120 depends on I2C && SYSFS 121 help 122 Enable this driver to get read support to SPD EEPROMs following 123 the JEDEC EE1004 standard. These are typically found on DDR4 124 SDRAM memory modules. 125 126 This driver can also be built as a module. If so, the module 127 will be called ee1004. 128 129endmenu 130