Documentation/devicetree/bindings/i2c/i2c-arb.txt

   1 Common i2c arbitration bus properties.
   2
   3 - i2c-arb child node
   4
   5 Required properties for the i2c-arb child node:
   6 - #address-cells = <1>;
   7 - #size-cells = <0>;
   8
   9 Optional properties for i2c-arb child node:
  10 - Child nodes conforming to i2c bus binding
  11
  12
  13 Example :
  14
  15         /*
  16            An NXP pca9541 I2C bus master selector at address 0x74
  17            with a NXP pca8574 GPIO expander attached.
  18          */
  19
  20         arb@74 {
  21                 compatible = "nxp,pca9541";
  22                 reg = <0x74>;
  23
  24                 i2c-arb {
  25                         #address-cells = <1>;
  26                         #size-cells = <0>;
  27
  28                         gpio@38 {
  29                                 compatible = "nxp,pca8574";
  30                                 reg = <0x38>;
  31                                 #gpio-cells = <2>;
  32                                 gpio-controller;
  33                         };
  34                 };
  35         };