Documentation/devicetree/bindings/input/rmi4/rmi_i2c.txt

   1 Synaptics RMI4 I2C Device Binding
   2
   3 The Synaptics RMI4 core is able to support RMI4 devices using different
   4 transports and different functions. This file describes the device tree
   5 bindings for devices using the I2C transport driver. Complete documentation
   6 for other transports and functions can be found in
   7 Documentation/devicetree/bindings/input/rmi4.
   8
   9 Required Properties:
  10 - compatible: syna,rmi4-i2c
  11 - reg: I2C address
  12 - #address-cells: Set to 1 to indicate that the function child nodes
  13                     consist of only on uint32 value.
  14 - #size-cells: Set to 0 to indicate that the function child nodes do not
  15                 have a size property.
  16
  17 Optional Properties:
  18 - interrupts: interrupt which the rmi device is connected to.
  19 - interrupt-parent: The interrupt controller.
  20 See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
  21
  22 - syna,reset-delay-ms: The number of milliseconds to wait after resetting the
  23                         device.
  24
  25 - syna,startup-delay-ms: The number of milliseconds to wait after powering on
  26                          the device.
  27
  28 - vdd-supply: VDD power supply.
  29 See ../regulator/regulator.txt
  30
  31 - vio-supply: VIO power supply
  32 See ../regulator/regulator.txt
  33
  34 Function Parameters:
  35 Parameters specific to RMI functions are contained in child nodes of the rmi device
  36  node. Documentation for the parameters of each function can be found in:
  37 Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt.
  38
  39
  40
  41 Example:
  42         &i2c1 {
  43                 rmi4-i2c-dev@2c {
  44                         compatible = "syna,rmi4-i2c";
  45                         reg = <0x2c>;
  46                         #address-cells = <1>;
  47                         #size-cells = <0>;
  48                         interrupt-parent = <&gpio>;
  49                         interrupts = <4 2>;
  50
  51                         rmi4-f01@1 {
  52                                 reg = <0x1>;
  53                                 syna,nosleep-mode = <1>;
  54                         };
  55
  56                         rmi4-f11@11 {
  57                                 reg = <0x11>;
  58                                 touchscreen-inverted-y;
  59                                 syna,sensor-type = <2>;
  60                         };
  61                 };
  62         };