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