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

   1 Device-Tree bindings for i2c gpio driver
   2
   3 Required properties:
   4         - compatible = "i2c-gpio";
   5         - gpios: sda and scl gpio
   6
   7
   8 Optional properties:
   9         - i2c-gpio,sda-open-drain: sda as open drain
  10         - i2c-gpio,scl-open-drain: scl as open drain
  11         - i2c-gpio,scl-output-only: scl as output only
  12         - i2c-gpio,delay-us: delay between GPIO operations (may depend on each platform)
  13         - i2c-gpio,timeout-ms: timeout to get data
  14
  15 Example nodes:
  16
  17 i2c@0 {
  18         compatible = "i2c-gpio";
  19         gpios = <&pioA 23 0 /* sda */
  20                  &pioA 24 0 /* scl */
  21                 >;
  22         i2c-gpio,sda-open-drain;
  23         i2c-gpio,scl-open-drain;
  24         i2c-gpio,delay-us = <2>;        /* ~100 kHz */
  25         #address-cells = <1>;
  26         #size-cells = <0>;
  27
  28         rv3029c2@56 {
  29                 compatible = "rv3029c2";
  30                 reg = <0x56>;
  31         };
  32 };