Documentation/devicetree/bindings/i2c/i2c-exynos5.txt

   1 * Samsung's High Speed I2C controller
   2
   3 The Samsung's High Speed I2C controller is used to interface with I2C devices
   4 at various speeds ranging from 100khz to 3.4Mhz.
   5
   6 Required properties:
   7   - compatible: value should be.
   8       -> "samsung,exynos5-hsi2c", for i2c compatible with exynos5 hsi2c.
   9   - reg: physical base address of the controller and length of memory mapped
  10     region.
  11   - interrupts: interrupt number to the cpu.
  12   - #address-cells: always 1 (for i2c addresses)
  13   - #size-cells: always 0
  14
  15   - Pinctrl:
  16     - pinctrl-0: Pin control group to be used for this controller.
  17     - pinctrl-names: Should contain only one value - "default".
  18
  19 Optional properties:
  20   - clock-frequency: Desired operating frequency in Hz of the bus.
  21     -> If not specified, the bus operates in fast-speed mode at
  22        at 100khz.
  23     -> If specified, the bus operates in high-speed mode only if the
  24        clock-frequency is >= 1Mhz.
  25
  26 Example:
  27
  28 hsi2c@12ca0000 {
  29         compatible = "samsung,exynos5-hsi2c";
  30         reg = <0x12ca0000 0x100>;
  31         interrupts = <56>;
  32         clock-frequency = <100000>;
  33
  34         pinctrl-0 = <&i2c4_bus>;
  35         pinctrl-names = "default";
  36
  37         #address-cells = <1>;
  38         #size-cells = <0>;
  39
  40         s2mps11_pmic@66 {
  41                 compatible = "samsung,s2mps11-pmic";
  42                 reg = <0x66>;
  43         };
  44 };