1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/counter/int
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Interrupt counter
8
9 maintainers:
10 - Oleksij Rempel <o.rempel@pengutronix.de>
11
12 description: |
13 A generic interrupt counter to measure inter
14 and used for agricultural devices to measure
15 other tools. Since the direction of rotation
16 signal line is needed.
17 Interrupts or gpios are required. If both ar
18 take precedence for counting interrupts.
19
20 properties:
21 compatible:
22 const: interrupt-counter
23
24 interrupts:
25 maxItems: 1
26
27 gpios:
28 maxItems: 1
29
30 required:
31 - compatible
32
33 anyOf:
34 - required: [ interrupts-extended ]
35 - required: [ interrupts ]
36 - required: [ gpios ]
37
38 additionalProperties: false
39
40 examples:
41 - |
42
43 #include <dt-bindings/interrupt-controller
44 #include <dt-bindings/gpio/gpio.h>
45
46 counter-0 {
47 compatible = "interrupt-counter";
48 interrupts-extended = <&gpio 0 IRQ_TYP
49 };
50
51 counter-1 {
52 compatible = "interrupt-counter";
53 gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
54 };
55
56 counter-2 {
57 compatible = "interrupt-counter";
58 interrupts-extended = <&gpio 2 IRQ_TYP
59 gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
60 };
61
62 ...
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