Documentation/devicetree/bindings/i2c/i2c-sunxi-p2wi.txt

   1
   2 * Allwinner P2WI (Push/Pull 2 Wire Interface) controller
   3
   4 Required properties :
   5
   6  - reg             : Offset and length of the register set for the device.
   7  - compatible      : Should one of the following:
   8                      - "allwinner,sun6i-a31-p2wi"
   9  - interrupts      : The interrupt line connected to the P2WI peripheral.
  10  - clocks          : The gate clk connected to the P2WI peripheral.
  11  - resets          : The reset line connected to the P2WI peripheral.
  12
  13 Optional properties :
  14
  15  - clock-frequency : Desired P2WI bus clock frequency in Hz. If not set the
  16 default frequency is 100kHz
  17
  18 A P2WI may contain one child node encoding a P2WI slave device.
  19
  20 Slave device properties:
  21   Required properties:
  22    - reg           : the I2C slave address used during the initialization
  23                      process to switch from I2C to P2WI mode
  24
  25 Example:
  26
  27         p2wi@01f03400 {
  28                 compatible = "allwinner,sun6i-a31-p2wi";
  29                 reg = <0x01f03400 0x400>;
  30                 interrupts = <0 39 4>;
  31                 clocks = <&apb0_gates 3>;
  32                 clock-frequency = <6000000>;
  33                 resets = <&apb0_rst 3>;
  34
  35                 axp221: pmic@68 {
  36                         compatible = "x-powers,axp221";
  37                         reg = <0x68>;
  38
  39                         /* ... */
  40                 };
  41         };