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