1 I2C for Atmel platforms
4 - compatible : Must be "atmel,at91rm9200-i2c", "atmel,at91sam9261-i2c",
5 "atmel,at91sam9260-i2c", "atmel,at91sam9g20-i2c", "atmel,at91sam9g10-i2c"
6 or "atmel,at91sam9x5-i2c"
7 - reg: physical base address of the controller and length of memory mapped
9 - interrupts: interrupt number to the cpu.
10 - #address-cells = <1>;
12 - clocks: phandles to input clocks.
15 - Child nodes conforming to i2c bus binding
20 compatible = "atmel,at91sam9g20-i2c";
21 reg = <0xfff84000 0x100>;
22 interrupts = <12 4 6>;
28 compatible = "24c512";