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_MAX6875 50 tristate "Maxim MAX6874/5 power supply supervisor" 51 depends on I2C 52 help 53 If you say yes here you get read-only support for the user EEPROM of 54 the Maxim MAX6874/5 EEPROM-programmable, quad power-supply 55 sequencer/supervisor. 56 57 All other features of this chip should be accessed via i2c-dev. 58 59 This driver can also be built as a module. If so, the module 60 will be called max6875. 61 62 63config EEPROM_93CX6 64 tristate "EEPROM 93CX6 support" 65 help 66 This is a driver for the EEPROM chipsets 93c46 and 93c66. 67 The driver supports both read as well as write commands. 68 69 If unsure, say N. 70 71config EEPROM_93XX46 72 tristate "Microwire EEPROM 93XX46 support" 73 depends on SPI && SYSFS 74 select REGMAP 75 select NVMEM 76 select NVMEM_SYSFS 77 help 78 Driver for the microwire EEPROM chipsets 93xx46x. The driver 79 supports both read and write commands and also the command to 80 erase the whole EEPROM. 81 82 This driver can also be built as a module. If so, the module 83 will be called eeprom_93xx46. 84 85 If unsure, say N. 86 87config EEPROM_DIGSY_MTC_CFG 88 bool "DigsyMTC display configuration EEPROMs device" 89 depends on GPIO_MPC5200 && SPI_GPIO 90 help 91 This option enables access to display configuration EEPROMs 92 on digsy_mtc board. You have to additionally select Microwire 93 EEPROM 93XX46 driver. sysfs entries will be created for that 94 EEPROM allowing to read/write the configuration data or to 95 erase the whole EEPROM. 96 97 If unsure, say N. 98 99config EEPROM_IDT_89HPESX 100 tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support" 101 depends on I2C && SYSFS 102 help 103 Enable this driver to get read/write access to EEPROM / CSRs 104 over IDT PCIe-swtich i2c-slave interface. 105 106 This driver can also be built as a module. If so, the module 107 will be called idt_89hpesx. 108 109config EEPROM_EE1004 110 tristate "SPD EEPROMs on DDR4 memory modules" 111 depends on I2C && SYSFS 112 help 113 Enable this driver to get read support to SPD EEPROMs following 114 the JEDEC EE1004 standard. These are typically found on DDR4 115 SDRAM memory modules. 116 117 This driver can also be built as a module. If so, the module 118 will be called ee1004. 119 120endmenu 121