1ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 25195e509SWolfram Sangmenu "EEPROM support" 35195e509SWolfram Sang 4dd7f8dbeSJean Delvareconfig EEPROM_AT24 581e34f91SLars Poeschel tristate "I2C EEPROMs / RAMs / ROMs from most vendors" 6781b8a2aSWolfram Sang depends on I2C && SYSFS 757d15550SAndrew Lunn select NVMEM 8*1b562183SArseny Solokha select NVMEM_SYSFS 95c015258SHeiner Kallweit select REGMAP_I2C 105195e509SWolfram Sang help 1181e34f91SLars Poeschel Enable this driver to get read/write support to most I2C EEPROMs 1281e34f91SLars Poeschel and compatible devices like FRAMs, SRAMs, ROMs etc. After you 1381e34f91SLars Poeschel configure the driver to know about each chip on your target 1481e34f91SLars Poeschel board. Use these generic chip names, instead of vendor-specific 1581e34f91SLars Poeschel ones like at24c64, 24lc02 or fm24c04: 165195e509SWolfram Sang 175195e509SWolfram Sang 24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08, 1837cf28d3SAdrian Bunk 24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048 195195e509SWolfram Sang 205195e509SWolfram Sang Unless you like data loss puzzles, always be sure that any chip 215195e509SWolfram Sang you configure as a 24c32 (32 kbit) or larger is NOT really a 225195e509SWolfram Sang 24c16 (16 kbit) or smaller, and vice versa. Marking the chip 235195e509SWolfram Sang as read-only won't help recover from this. Also, if your chip 245195e509SWolfram Sang has any software write-protect mechanism you may want to review the 255195e509SWolfram Sang code to make sure this driver won't turn it on by accident. 265195e509SWolfram Sang 275195e509SWolfram Sang If you use this with an SMBus adapter instead of an I2C adapter, 285195e509SWolfram Sang full functionality is not available. Only smaller devices are 295195e509SWolfram Sang supported (24c16 and below, max 4 kByte). 305195e509SWolfram Sang 315195e509SWolfram Sang This driver can also be built as a module. If so, the module 325195e509SWolfram Sang will be called at24. 335195e509SWolfram Sang 34dd7f8dbeSJean Delvareconfig EEPROM_AT25 35e51d565fSWolfram Sang tristate "SPI EEPROMs from most vendors" 36e51d565fSWolfram Sang depends on SPI && SYSFS 375a99f570SAndrew Lunn select NVMEM 38*1b562183SArseny Solokha select NVMEM_SYSFS 39e51d565fSWolfram Sang help 40e51d565fSWolfram Sang Enable this driver to get read/write support to most SPI EEPROMs, 41e51d565fSWolfram Sang after you configure the board init code to know about each eeprom 42e51d565fSWolfram Sang on your target board. 43e51d565fSWolfram Sang 44e51d565fSWolfram Sang This driver can also be built as a module. If so, the module 45e51d565fSWolfram Sang will be called at25. 46e51d565fSWolfram Sang 47dd7f8dbeSJean Delvareconfig EEPROM_LEGACY 482e157888SWolfram Sang tristate "Old I2C EEPROM reader" 49dd7f8dbeSJean Delvare depends on I2C && SYSFS 502e157888SWolfram Sang help 512e157888SWolfram Sang If you say yes here you get read-only access to the EEPROM data 522e157888SWolfram Sang available on modern memory DIMMs and Sony Vaio laptops via I2C. Such 532e157888SWolfram Sang EEPROMs could theoretically be available on other devices as well. 542e157888SWolfram Sang 552e157888SWolfram Sang This driver can also be built as a module. If so, the module 562e157888SWolfram Sang will be called eeprom. 572e157888SWolfram Sang 584b364f23SWolfram Sangconfig EEPROM_MAX6875 594b364f23SWolfram Sang tristate "Maxim MAX6874/5 power supply supervisor" 6065929215SGreg Kroah-Hartman depends on I2C 614b364f23SWolfram Sang help 624b364f23SWolfram Sang If you say yes here you get read-only support for the user EEPROM of 634b364f23SWolfram Sang the Maxim MAX6874/5 EEPROM-programmable, quad power-supply 644b364f23SWolfram Sang sequencer/supervisor. 654b364f23SWolfram Sang 664b364f23SWolfram Sang All other features of this chip should be accessed via i2c-dev. 674b364f23SWolfram Sang 684b364f23SWolfram Sang This driver can also be built as a module. If so, the module 694b364f23SWolfram Sang will be called max6875. 704b364f23SWolfram Sang 714b364f23SWolfram Sang 720eb6da20SWolfram Sangconfig EEPROM_93CX6 730eb6da20SWolfram Sang tristate "EEPROM 93CX6 support" 740eb6da20SWolfram Sang help 750eb6da20SWolfram Sang This is a driver for the EEPROM chipsets 93c46 and 93c66. 760eb6da20SWolfram Sang The driver supports both read as well as write commands. 770eb6da20SWolfram Sang 780eb6da20SWolfram Sang If unsure, say N. 790eb6da20SWolfram Sang 8006b4501eSAnatolij Gustschinconfig EEPROM_93XX46 8106b4501eSAnatolij Gustschin tristate "Microwire EEPROM 93XX46 support" 8206b4501eSAnatolij Gustschin depends on SPI && SYSFS 831c4b6e2cSAndrew Lunn select REGMAP 841c4b6e2cSAndrew Lunn select NVMEM 85*1b562183SArseny Solokha select NVMEM_SYSFS 8606b4501eSAnatolij Gustschin help 8706b4501eSAnatolij Gustschin Driver for the microwire EEPROM chipsets 93xx46x. The driver 8806b4501eSAnatolij Gustschin supports both read and write commands and also the command to 8906b4501eSAnatolij Gustschin erase the whole EEPROM. 9006b4501eSAnatolij Gustschin 9106b4501eSAnatolij Gustschin This driver can also be built as a module. If so, the module 9206b4501eSAnatolij Gustschin will be called eeprom_93xx46. 9306b4501eSAnatolij Gustschin 9406b4501eSAnatolij Gustschin If unsure, say N. 9506b4501eSAnatolij Gustschin 96469dded1SAnatolij Gustschinconfig EEPROM_DIGSY_MTC_CFG 97469dded1SAnatolij Gustschin bool "DigsyMTC display configuration EEPROMs device" 98001ef5e4SPaul Bolle depends on GPIO_MPC5200 && SPI_GPIO 99469dded1SAnatolij Gustschin help 100469dded1SAnatolij Gustschin This option enables access to display configuration EEPROMs 101469dded1SAnatolij Gustschin on digsy_mtc board. You have to additionally select Microwire 102469dded1SAnatolij Gustschin EEPROM 93XX46 driver. sysfs entries will be created for that 103469dded1SAnatolij Gustschin EEPROM allowing to read/write the configuration data or to 104469dded1SAnatolij Gustschin erase the whole EEPROM. 105469dded1SAnatolij Gustschin 106469dded1SAnatolij Gustschin If unsure, say N. 107469dded1SAnatolij Gustschin 108cfad6425SSerge Seminconfig EEPROM_IDT_89HPESX 109cfad6425SSerge Semin tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support" 110cfad6425SSerge Semin depends on I2C && SYSFS 111cfad6425SSerge Semin help 112cfad6425SSerge Semin Enable this driver to get read/write access to EEPROM / CSRs 113cfad6425SSerge Semin over IDT PCIe-swtich i2c-slave interface. 114cfad6425SSerge Semin 115cfad6425SSerge Semin This driver can also be built as a module. If so, the module 116cfad6425SSerge Semin will be called idt_89hpesx. 117cfad6425SSerge Semin 1183b7584a2SJean Delvareconfig EEPROM_EE1004 1193b7584a2SJean Delvare tristate "SPD EEPROMs on DDR4 memory modules" 1203b7584a2SJean Delvare depends on I2C && SYSFS 1213b7584a2SJean Delvare help 1223b7584a2SJean Delvare Enable this driver to get read support to SPD EEPROMs following 1233b7584a2SJean Delvare the JEDEC EE1004 standard. These are typically found on DDR4 1243b7584a2SJean Delvare SDRAM memory modules. 1253b7584a2SJean Delvare 1263b7584a2SJean Delvare This driver can also be built as a module. If so, the module 1273b7584a2SJean Delvare will be called ee1004. 1283b7584a2SJean Delvare 1295195e509SWolfram Sangendmenu 130