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 select SPI_MEM 41 help 42 Enable this driver to get read/write support to most SPI EEPROMs 43 and Cypress FRAMs, 44 after you configure the board init code to know about each eeprom 45 on your target board. 46 47 This driver can also be built as a module. If so, the module 48 will be called at25. 49 50config EEPROM_MAX6875 51 tristate "Maxim MAX6874/5 power supply supervisor" 52 depends on I2C 53 help 54 If you say yes here you get read-only support for the user EEPROM of 55 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply 56 sequencer/supervisor. 57 58 All other features of this chip should be accessed via i2c-dev. 59 60 This driver can also be built as a module. If so, the module 61 will be called max6875. 62 63 64config EEPROM_93CX6 65 tristate "EEPROM 93CX6 support" 66 help 67 This is a driver for the EEPROM chipsets 93c46 and 93c66. 68 The driver supports both read as well as write commands. 69 70 If unsure, say N. 71 72config EEPROM_93XX46 73 tristate "Microwire EEPROM 93XX46 support" 74 depends on SPI && SYSFS 75 select REGMAP 76 select NVMEM 77 select NVMEM_SYSFS 78 help 79 Driver for the microwire EEPROM chipsets 93xx46x. The driver 80 supports both read and write commands and also the command to 81 erase the whole EEPROM. 82 83 This driver can also be built as a module. If so, the module 84 will be called eeprom_93xx46. 85 86 If unsure, say N. 87 88config EEPROM_DIGSY_MTC_CFG 89 bool "DigsyMTC display configuration EEPROMs device" 90 depends on GPIO_MPC5200 && SPI_GPIO 91 help 92 This option enables access to display configuration EEPROMs 93 on digsy_mtc board. You have to additionally select Microwire 94 EEPROM 93XX46 driver. sysfs entries will be created for that 95 EEPROM allowing to read/write the configuration data or to 96 erase the whole EEPROM. 97 98 If unsure, say N. 99 100config EEPROM_IDT_89HPESX 101 tristate "IDT 89HPESx PCIe-switches EEPROM / CSR support" 102 depends on I2C && SYSFS 103 help 104 Enable this driver to get read/write access to EEPROM / CSRs 105 over IDT PCIe-switch i2c-slave interface. 106 107 This driver can also be built as a module. If so, the module 108 will be called idt_89hpesx. 109 110config EEPROM_EE1004 111 tristate "SPD EEPROMs on DDR4 memory modules" 112 depends on I2C && SYSFS 113 select NVMEM 114 select NVMEM_SYSFS 115 help 116 Enable this driver to get read support to SPD EEPROMs following 117 the JEDEC EE1004 standard. These are typically found on DDR4 118 SDRAM memory modules. 119 120 This driver can also be built as a module. If so, the module 121 will be called ee1004. 122 123endmenu 124