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

   1 * Texas Instruments Davinci/Keystone I2C
   2
   3 This file provides information, what the device node for the
   4 davinci/keystone i2c interface contains.
   5
   6 Required properties:
   7 - compatible: "ti,davinci-i2c" or "ti,keystone-i2c";
   8 - reg : Offset and length of the register set for the device
   9 - clocks: I2C functional clock phandle.
  10           For 66AK2G this property should be set per binding,
  11           Documentation/devicetree/bindings/clock/ti,sci-clk.txt
  12
  13 SoC-specific Required Properties:
  14
  15 The following are mandatory properties for Keystone 2 66AK2G SoCs only:
  16
  17 - power-domains:        Should contain a phandle to a PM domain provider node
  18                         and an args specifier containing the I2C device id
  19                         value. This property is as per the binding,
  20                         Documentation/devicetree/bindings/soc/ti/sci-pm-domain.txt
  21
  22 Recommended properties :
  23 - interrupts : standard interrupt property.
  24 - clock-frequency : desired I2C bus clock frequency in Hz.
  25 - ti,has-pfunc: boolean; if defined, it indicates that SoC supports PFUNC
  26         registers. PFUNC registers allow to switch I2C pins to function as
  27         GPIOs, so they can be toggled manually.
  28
  29 Example (enbw_cmc board):
  30         i2c@1c22000 {
  31                 compatible = "ti,davinci-i2c";
  32                 reg = <0x22000 0x1000>;
  33                 clock-frequency = <100000>;
  34                 interrupts = <15>;
  35                 interrupt-parent = <&intc>;
  36                 #address-cells = <1>;
  37                 #size-cells = <0>;
  38
  39                 dtt@48 {
  40                         compatible = "national,lm75";
  41                         reg = <0x48>;
  42                 };
  43         };