| .. | .. |
|---|
| 1 | | -EEPROMs (I2C) |
|---|
| 2 | | - |
|---|
| 3 | | -Required properties: |
|---|
| 4 | | - |
|---|
| 5 | | - - compatible: Must be a "<manufacturer>,<model>" pair. The following <model> |
|---|
| 6 | | - values are supported (assuming "atmel" as manufacturer): |
|---|
| 7 | | - |
|---|
| 8 | | - "atmel,24c00", |
|---|
| 9 | | - "atmel,24c01", |
|---|
| 10 | | - "atmel,24cs01", |
|---|
| 11 | | - "atmel,24c02", |
|---|
| 12 | | - "atmel,24cs02", |
|---|
| 13 | | - "atmel,24mac402", |
|---|
| 14 | | - "atmel,24mac602", |
|---|
| 15 | | - "atmel,spd", |
|---|
| 16 | | - "atmel,24c04", |
|---|
| 17 | | - "atmel,24cs04", |
|---|
| 18 | | - "atmel,24c08", |
|---|
| 19 | | - "atmel,24cs08", |
|---|
| 20 | | - "atmel,24c16", |
|---|
| 21 | | - "atmel,24cs16", |
|---|
| 22 | | - "atmel,24c32", |
|---|
| 23 | | - "atmel,24cs32", |
|---|
| 24 | | - "atmel,24c64", |
|---|
| 25 | | - "atmel,24cs64", |
|---|
| 26 | | - "atmel,24c128", |
|---|
| 27 | | - "atmel,24c256", |
|---|
| 28 | | - "atmel,24c512", |
|---|
| 29 | | - "atmel,24c1024", |
|---|
| 30 | | - "atmel,24c2048", |
|---|
| 31 | | - |
|---|
| 32 | | - If <manufacturer> is not "atmel", then a fallback must be used |
|---|
| 33 | | - with the same <model> and "atmel" as manufacturer. |
|---|
| 34 | | - |
|---|
| 35 | | - Example: |
|---|
| 36 | | - compatible = "microchip,24c128", "atmel,24c128"; |
|---|
| 37 | | - |
|---|
| 38 | | - Supported manufacturers are: |
|---|
| 39 | | - |
|---|
| 40 | | - "catalyst", |
|---|
| 41 | | - "microchip", |
|---|
| 42 | | - "nxp", |
|---|
| 43 | | - "ramtron", |
|---|
| 44 | | - "renesas", |
|---|
| 45 | | - "rohm", |
|---|
| 46 | | - "st", |
|---|
| 47 | | - |
|---|
| 48 | | - Some vendors use different model names for chips which are just |
|---|
| 49 | | - variants of the above. Known such exceptions are listed below: |
|---|
| 50 | | - |
|---|
| 51 | | - "nxp,se97b" - the fallback is "atmel,24c02", |
|---|
| 52 | | - "renesas,r1ex24002" - the fallback is "atmel,24c02" |
|---|
| 53 | | - "renesas,r1ex24128" - the fallback is "atmel,24c128" |
|---|
| 54 | | - "rohm,br24t01" - the fallback is "atmel,24c01" |
|---|
| 55 | | - |
|---|
| 56 | | - - reg: The I2C address of the EEPROM. |
|---|
| 57 | | - |
|---|
| 58 | | -Optional properties: |
|---|
| 59 | | - |
|---|
| 60 | | - - pagesize: The length of the pagesize for writing. Please consult the |
|---|
| 61 | | - manual of your device, that value varies a lot. A wrong value |
|---|
| 62 | | - may result in data loss! If not specified, a safety value of |
|---|
| 63 | | - '1' is used which will be very slow. |
|---|
| 64 | | - |
|---|
| 65 | | - - read-only: This parameterless property disables writes to the eeprom. |
|---|
| 66 | | - |
|---|
| 67 | | - - size: Total eeprom size in bytes. |
|---|
| 68 | | - |
|---|
| 69 | | - - no-read-rollover: This parameterless property indicates that the |
|---|
| 70 | | - multi-address eeprom does not automatically roll over |
|---|
| 71 | | - reads to the next slave address. Please consult the |
|---|
| 72 | | - manual of your device. |
|---|
| 73 | | - |
|---|
| 74 | | - - wp-gpios: GPIO to which the write-protect pin of the chip is connected. |
|---|
| 75 | | - |
|---|
| 76 | | - - address-width: number of address bits (one of 8, 16). |
|---|
| 77 | | - |
|---|
| 78 | | -Example: |
|---|
| 79 | | - |
|---|
| 80 | | -eeprom@52 { |
|---|
| 81 | | - compatible = "atmel,24c32"; |
|---|
| 82 | | - reg = <0x52>; |
|---|
| 83 | | - pagesize = <32>; |
|---|
| 84 | | - wp-gpios = <&gpio1 3 0>; |
|---|
| 85 | | -}; |
|---|
| 1 | +This file has been moved to at24.yaml. |
|---|