EEPROMs (SPI) compatible with Atmel at25. Required properties: - compatible : Should be ",", and generic value "atmel,at25". Example "," values: "microchip,25lc040" "st,m95m02" "st,m95256" - reg : chip select number - spi-max-frequency : max spi frequency to use - pagesize : size of the eeprom page - size : total eeprom size in bytes - address-width : number of address bits (one of 8, 9, 16, or 24). For 9 bits, the MSB of the address is sent as bit 3 of the instruction byte, before the address byte. Optional properties: - spi-cpha : SPI shifted clock phase, as per spi-bus bindings. - spi-cpol : SPI inverse clock polarity, as per spi-bus bindings. - read-only : this parameter-less property disables writes to the eeprom Obsolete legacy properties can be used in place of "size", "pagesize", "address-width", and "read-only": - at25,byte-len : total eeprom size in bytes - at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h - at25,page-size : size of the eeprom page Additional compatible properties are also allowed. Example: eeprom@0 { compatible = "st,m95256", "atmel,at25"; reg = <0> spi-max-frequency = <5000000>; spi-cpha; spi-cpol; pagesize = <64>; size = <32768>; address-width = <16>; };