1 Rotary encoder DT bindings
4 - gpios: a spec for at least two GPIOs to be used, most significant first
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,steps-per-period: Number of steps (stable states) per period.
18 The values have the following meaning:
19 1: Full-period mode (default)
21 4: Quarter-period mode
22 - wakeup-source: Boolean, rotary encoder can wake up the system.
24 Deprecated properties:
25 - rotary-encoder,half-period: Makes the driver work on half-period mode.
26 This property is deprecated. Instead, a 'steps-per-period ' value should
27 be used, such as "rotary-encoder,steps-per-period = <2>".
29 See Documentation/input/rotary-encoder.txt for more information.
34 compatible = "rotary-encoder";
35 gpios = <&gpio 19 1>, <&gpio 20 0>; /* GPIO19 is inverted */
36 linux,axis = <0>; /* REL_X */
37 rotary-encoder,relative-axis;
41 compatible = "rotary-encoder";
42 gpios = <&gpio 21 0>, <&gpio 22 0>;
43 linux,axis = <1>; /* ABS_Y */
44 rotary-encoder,steps = <24>;
45 rotary-encoder,rollover;