| 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", |
| |
| 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>; |
| }; |
