linux/Documentation/devicetree/bindings/i2c/i2c-designware.txt
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   1* Synopsys DesignWare I2C
   2
   3Required properties :
   4
   5 - compatible : should be "snps,designware-i2c"
   6 - reg : Offset and length of the register set for the device
   7 - interrupts : <IRQ> where IRQ is the interrupt number.
   8
   9Recommended properties :
  10
  11 - clock-frequency : desired I2C bus clock frequency in Hz.
  12
  13Example :
  14
  15        i2c@f0000 {
  16                #address-cells = <1>;
  17                #size-cells = <0>;
  18                compatible = "snps,designware-i2c";
  19                reg = <0xf0000 0x1000>;
  20                interrupts = <11>;
  21                clock-frequency = <400000>;
  22        };
  23