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