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