1EEPROMs (I2C)
2
3Required 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
31                If <manufacturer> is not "atmel", then a fallback must be used
32                with the same <model> and "atmel" as manufacturer.
33
34                Example:
35                        compatible = "microchip,24c128", "atmel,24c128";
36
37                Supported manufacturers are:
38
39                "catalyst",
40                "microchip",
41                "nxp",
42                "ramtron",
43                "renesas",
44                "rohm",
45                "st",
46
47                Some vendors use different model names for chips which are just
48                variants of the above. Known such exceptions are listed below:
49
50                "nxp,se97b" - the fallback is "atmel,24c02",
51                "renesas,r1ex24002" - the fallback is "atmel,24c02"
52                "renesas,r1ex24128" - the fallback is "atmel,24c128"
53                "rohm,br24t01" - the fallback is "atmel,24c01"
54
55  - reg: The I2C address of the EEPROM.
56
57Optional properties:
58
59  - pagesize: The length of the pagesize for writing. Please consult the
60              manual of your device, that value varies a lot. A wrong value
61              may result in data loss! If not specified, a safety value of
62              '1' is used which will be very slow.
63
64  - read-only: This parameterless property disables writes to the eeprom.
65
66  - size: Total eeprom size in bytes.
67
68  - no-read-rollover: This parameterless property indicates that the
69                      multi-address eeprom does not automatically roll over
70                      reads to the next slave address. Please consult the
71                      manual of your device.
72
73  - wp-gpios: GPIO to which the write-protect pin of the chip is connected.
74
75  - address-width: number of address bits (one of 8, 16).
76
77Example:
78
79eeprom@52 {
80	compatible = "atmel,24c32";
81	reg = <0x52>;
82	pagesize = <32>;
83	wp-gpios = <&gpio1 3 0>;
84};
85