# SPDX-License-Identifier: GPL-2.0-only menu "EEPROM support" config EEPROM_AT24 tristate "I2C EEPROMs / RAMs / ROMs from most vendors" depends on I2C && SYSFS select NVMEM select NVMEM_SYSFS select REGMAP select REGMAP_I2C help Enable this driver to get read/write support to most I2C EEPROMs and compatible devices like FRAMs, SRAMs, ROMs etc. After you configure the driver to know about each chip on your target board. Use these generic chip names, instead of vendor-specific ones like at24c64, 24lc02 or fm24c04: 24c00, 24c01, 24c02, spd (readonly 24c02), 24c04, 24c08, 24c16, 24c32, 24c64, 24c128, 24c256, 24c512, 24c1024, 24c2048 Unless you like data loss puzzles, always be sure that any chip you configure as a 24c32 (32 kbit) or larger is NOT really a 24c16 (16 kbit) or smaller, and vice versa. Marking the chip as read-only won't help recover from this. Also, if your chip has any software write-protect mechanism you may want to review the code to make sure this driver won't turn it on by accident. If you use this with an SMBus adapter instead of an I2C adapter, full functionality is not available. Only smaller devices are supported (24c16 and below, max 4 kByte). This driver can also be built as a module. If so, the module will be called at24. config EEPROM_AT25 tristate "SPI EEPROMs (FRAMs) from most vendors" depends on SPI && SYSFS select NVMEM select NVMEM_SYSFS help Enable this driver to get read/write support to most SPI EEPROMs and Cypress FRAMs, after you configure the board init code to know about each eeprom on your target board. This driver can also be built as a module. If so, the module will be called at25. config EEPROM_MAX6875 tristate "Maxim MAX6874/5 power supply supervisor" depends on I2C help If you say yes here you get read-only support for the user EEPROM of the Maxim MAX6874/5 EEPROM-programmable, quad power-supply sequencer/supervisor. All other features of this chip should be accessed via i2c-dev. This driver can also be built as a module. If so, the module will be called max6875. config EEPROM_93CX6 tristate "EEPROM 93CX6 support" help This is a driver for the EEPROM chipsets 93c46 and 93c66. The driver supports both read as well as write commands. If unsure, say N. config EEPROM_93XX46 tristate "Microwire EEPROM 93XX46 support" depends on SPI && SYSFS select REGMAP select NVMEM select NVMEM_SYSFS help Driver for the microwire EEPROM chipsets 93xx46x. The driver supports both read and write commands and also the command to erase the whole EEPROM. This driver can also be built as a module. If so, the module will be called eeprom_93xx46. If unsure, say N. config EEPROM_DIGSY_MTC_CFG bool "DigsyMTC display configuration EEPROMs device" depends on GPIO_MPC5200 && SPI_GPIO help This option enables access to display configuration EEPROMs on digsy_mtc board. You have to additionally select Microwire EEPROM 93XX46 driver. sysfs entries will be created for that EEPROM allowing to read/write the configuration data or to erase the whole EEPROM. If unsure, say N. config EEPROM_IDT_89HPESX tristate "IDT 89HPESx PCIe-swtiches EEPROM / CSR support" depends on I2C && SYSFS help Enable this driver to get read/write access to EEPROM / CSRs over IDT PCIe-swtich i2c-slave interface. This driver can also be built as a module. If so, the module will be called idt_89hpesx. config EEPROM_EE1004 tristate "SPD EEPROMs on DDR4 memory modules" depends on I2C && SYSFS select NVMEM select NVMEM_SYSFS help Enable this driver to get read support to SPD EEPROMs following the JEDEC EE1004 standard. These are typically found on DDR4 SDRAM memory modules. This driver can also be built as a module. If so, the module will be called ee1004. endmenu