Documentation/devicetree/bindings/eeprom/at25.txt

   1 EEPROMs (SPI) compatible with Atmel at25.
   2
   3 Required properties:
   4 - compatible : "atmel,at25".
   5 - reg : chip select number
   6 - spi-max-frequency : max spi frequency to use
   7 - pagesize : size of the eeprom page
   8 - size : total eeprom size in bytes
   9 - address-width : number of address bits (one of 8, 16, or 24)
  10
  11 Optional properties:
  12 - spi-cpha : SPI shifted clock phase, as per spi-bus bindings.
  13 - spi-cpol : SPI inverse clock polarity, as per spi-bus bindings.
  14 - read-only : this parameter-less property disables writes to the eeprom
  15
  16 Obsolete legacy properties are can be used in place of "size", "pagesize",
  17 "address-width", and "read-only":
  18 - at25,byte-len : total eeprom size in bytes
  19 - at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h
  20 - at25,page-size : size of the eeprom page
  21
  22 Additional compatible properties are also allowed.
  23
  24 Example:
  25         at25@0 {
  26                 compatible = "atmel,at25", "st,m95256";
  27                 reg = <0>
  28                 spi-max-frequency = <5000000>;
  29                 spi-cpha;
  30                 spi-cpol;
  31
  32                 pagesize = <64>;
  33                 size = <32768>;
  34                 address-width = <16>;
  35         };