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| EEPROMs (I2C)
|
| Required properties:
|
| - compatible: Must be a "<manufacturer>,<model>" pair. The following <model>
| values are supported (assuming "atmel" as manufacturer):
|
| "atmel,24c00",
| "atmel,24c01",
| "atmel,24cs01",
| "atmel,24c02",
| "atmel,24cs02",
| "atmel,24mac402",
| "atmel,24mac602",
| "atmel,spd",
| "atmel,24c04",
| "atmel,24cs04",
| "atmel,24c08",
| "atmel,24cs08",
| "atmel,24c16",
| "atmel,24cs16",
| "atmel,24c32",
| "atmel,24cs32",
| "atmel,24c64",
| "atmel,24cs64",
| "atmel,24c128",
| "atmel,24c256",
| "atmel,24c512",
| "atmel,24c1024",
| "atmel,24c2048",
|
| If <manufacturer> is not "atmel", then a fallback must be used
| with the same <model> and "atmel" as manufacturer.
|
| Example:
| compatible = "microchip,24c128", "atmel,24c128";
|
| Supported manufacturers are:
|
| "catalyst",
| "microchip",
| "nxp",
| "ramtron",
| "renesas",
| "rohm",
| "st",
|
| Some vendors use different model names for chips which are just
| variants of the above. Known such exceptions are listed below:
|
| "nxp,se97b" - the fallback is "atmel,24c02",
| "renesas,r1ex24002" - the fallback is "atmel,24c02"
| "renesas,r1ex24128" - the fallback is "atmel,24c128"
| "rohm,br24t01" - the fallback is "atmel,24c01"
|
| - reg: The I2C address of the EEPROM.
|
| Optional properties:
|
| - pagesize: The length of the pagesize for writing. Please consult the
| manual of your device, that value varies a lot. A wrong value
| may result in data loss! If not specified, a safety value of
| '1' is used which will be very slow.
|
| - read-only: This parameterless property disables writes to the eeprom.
|
| - size: Total eeprom size in bytes.
|
| - no-read-rollover: This parameterless property indicates that the
| multi-address eeprom does not automatically roll over
| reads to the next slave address. Please consult the
| manual of your device.
|
| - wp-gpios: GPIO to which the write-protect pin of the chip is connected.
|
| - address-width: number of address bits (one of 8, 16).
|
| Example:
|
| eeprom@52 {
| compatible = "atmel,24c32";
| reg = <0x52>;
| pagesize = <32>;
| wp-gpios = <&gpio1 3 0>;
| };
|
|
