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1Synaptics RMI4 I2C Device Binding
2
3The Synaptics RMI4 core is able to support RMI4 devices using different
4transports and different functions. This file describes the device tree
5bindings for devices using the I2C transport driver. Complete documentation
6for other transports and functions can be found in
7Documentation/devicetree/bindings/input/rmi4.
8
9Required 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
17Optional Properties:
18- interrupts: interrupt which the rmi device is connected to.
19See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
20
21- syna,reset-delay-ms: The number of milliseconds to wait after resetting the
22 device.
23
24- syna,startup-delay-ms: The number of milliseconds to wait after powering on
25 the device.
26
27- vdd-supply: VDD power supply.
28See ../regulator/regulator.txt
29
30- vio-supply: VIO power supply
31See ../regulator/regulator.txt
32
33Function Parameters:
34Parameters specific to RMI functions are contained in child nodes of the rmi device
35 node. Documentation for the parameters of each function can be found in:
36Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt.
37
38
39
40Example:
41 &i2c1 {
42 rmi4-i2c-dev@2c {
43 compatible = "syna,rmi4-i2c";
44 reg = <0x2c>;
45 #address-cells = <1>;
46 #size-cells = <0>;
47 interrupt-parent = <&gpio>;
48 interrupts = <4 2>;
49
50 rmi4-f01@1 {
51 reg = <0x1>;
52 syna,nosleep-mode = <1>;
53 };
54
55 rmi4-f11@11 {
56 reg = <0x11>;
57 touchscreen-inverted-y;
58 syna,sensor-type = <2>;
59 };
60 };
61 };