1Rotary encoder DT bindings
2
3Required properties:
4- gpios: a spec for two GPIOs to be used
5
6Optional properties:
7- linux,axis: the input subsystem axis to map to this rotary encoder.
8  Defaults to 0 (ABS_X / REL_X)
9- rotary-encoder,steps: Number of steps in a full turnaround of the
10  encoder. Only relevant for absolute axis. Defaults to 24 which is a
11  typical value for such devices.
12- rotary-encoder,relative-axis: register a relative axis rather than an
13  absolute one. Relative axis will only generate +1/-1 events on the input
14  device, hence no steps need to be passed.
15- rotary-encoder,rollover: Automatic rollove when the rotary value becomes
16  greater than the specified steps or smaller than 0. For absolute axis only.
17- rotary-encoder,half-period: Makes the driver work on half-period mode.
18
19See Documentation/input/rotary-encoder.txt for more information.
20
21Example:
22
23		rotary@0 {
24			compatible = "rotary-encoder";
25			gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
26			linux,axis = <0>; /* REL_X */
27			rotary-encoder,relative-axis;
28		};
29
30		rotary@1 {
31			compatible = "rotary-encoder";
32			gpios = <&gpio 21 0>, <&gpio 22 0>;
33			linux,axis = <1>; /* ABS_Y */
34			rotary-encoder,steps = <24>;
35			rotary-encoder,rollover;
36		};
37