linux/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt
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   1Broadcom BCM2835 I2C controller
   2
   3Required properties:
   4- compatible : Should be "brcm,bcm2835-i2c".
   5- reg: Should contain register location and length.
   6- interrupts: Should contain interrupt.
   7- clocks : The clock feeding the I2C controller.
   8
   9Recommended properties:
  10- clock-frequency : desired I2C bus clock frequency in Hz.
  11
  12Example:
  13
  14i2c@20205000 {
  15        compatible = "brcm,bcm2835-i2c";
  16        reg = <0x7e205000 0x1000>;
  17        interrupts = <2 21>;
  18        clocks = <&clk_i2c>;
  19        clock-frequency = <100000>;
  20};
  21