1U-Boot I2C
2----------
3
4U-Boot's I2C model has the concept of an offset within a chip (I2C target
5device). The offset can be up to 4 bytes long, but is normally 1 byte,
6meaning that offsets from 0 to 255 are supported by the chip. This often
7corresponds to register numbers.
8
9Apart from the controller-specific I2C bindings, U-Boot supports a special
10property which allows the chip offset length to be selected.
11
12Optional properties:
13- u-boot,i2c-offset-len - length of chip offset in bytes. If omitted the
14    default value of 1 is used.
15
16
17Example
18-------
19
20i2c4: i2c@12ca0000 {
21	cros-ec@1e {
22		reg = <0x1e>;
23		compatible = "google,cros-ec";
24		i2c-max-frequency = <100000>;
25		u-boot,i2c-offset-len = <0>;
26		ec-interrupt = <&gpx1 6 GPIO_ACTIVE_LOW>;
27	};
28};
29