0001 Synaptics RMI4 I2C Device Binding
0002
0003 The Synaptics RMI4 core is able to support RMI4 devices using different
0004 transports and different functions. This file describes the device tree
0005 bindings for devices using the I2C transport driver. Complete documentation
0006 for other transports and functions can be found in
0007 Documentation/devicetree/bindings/input/rmi4.
0008
0009 Required Properties:
0010 - compatible: syna,rmi4-i2c
0011 - reg: I2C address
0012 - #address-cells: Set to 1 to indicate that the function child nodes
0013 consist of only on uint32 value.
0014 - #size-cells: Set to 0 to indicate that the function child nodes do not
0015 have a size property.
0016
0017 Optional Properties:
0018 - interrupts: interrupt which the rmi device is connected to.
0019 See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
0020
0021 - syna,reset-delay-ms: The number of milliseconds to wait after resetting the
0022 device.
0023
0024 - syna,startup-delay-ms: The number of milliseconds to wait after powering on
0025 the device.
0026
0027 - vdd-supply: VDD power supply.
0028 See ../regulator/regulator.txt
0029
0030 - vio-supply: VIO power supply
0031 See ../regulator/regulator.txt
0032
0033 Function Parameters:
0034 Parameters specific to RMI functions are contained in child nodes of the rmi device
0035 node. Documentation for the parameters of each function can be found in:
0036 Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt.
0037
0038
0039
0040 Example:
0041 &i2c1 {
0042 rmi4-i2c-dev@2c {
0043 compatible = "syna,rmi4-i2c";
0044 reg = <0x2c>;
0045 #address-cells = <1>;
0046 #size-cells = <0>;
0047 interrupt-parent = <&gpio>;
0048 interrupts = <4 2>;
0049
0050 rmi4-f01@1 {
0051 reg = <0x1>;
0052 syna,nosleep-mode = <1>;
0053 };
0054
0055 rmi4-f11@11 {
0056 reg = <0x11>;
0057 touchscreen-inverted-y;
0058 syna,sensor-type = <2>;
0059 };
0060 };
0061 };
