1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/input/cirrus,ep9307-keypad.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cirrus ep93xx keypad
8
9 maintainers:
10 - Alexander Sverdlin <alexander.sverdlin@gmail.com>
11
12 allOf:
13 - $ref: /schemas/input/matrix-keymap.yaml#
14
15 description:
16 The KPP is designed to interface with a keypad matrix with 2-point contact
17 or 3-point contact keys. The KPP is designed to simplify the software task
18 of scanning a keypad matrix. The KPP is capable of detecting, debouncing,
19 and decoding one or multiple keys pressed simultaneously on a keypad.
20
21 properties:
22 compatible:
23 oneOf:
24 - const: cirrus,ep9307-keypad
25 - items:
26 - enum:
27 - cirrus,ep9312-keypad
28 - cirrus,ep9315-keypad
29 - const: cirrus,ep9307-keypad
30
31 reg:
32 maxItems: 1
33
34 interrupts:
35 maxItems: 1
36
37 clocks:
38 maxItems: 1
39
40 debounce-delay-ms:
41 description: |
42 Time in microseconds that key must be pressed or
43 released for state change interrupt to trigger.
44
45 cirrus,prescale:
46 description: row/column counter pre-scaler load value
47 $ref: /schemas/types.yaml#/definitions/uint16
48 maximum: 1023
49
50 required:
51 - compatible
52 - reg
53 - interrupts
54 - clocks
55 - linux,keymap
56
57 unevaluatedProperties: false
58
59 examples:
60 - |
61 #include <dt-bindings/input/input.h>
62 #include <dt-bindings/clock/cirrus,ep9301-syscon.h>
63 keypad@800f0000 {
64 compatible = "cirrus,ep9307-keypad";
65 reg = <0x800f0000 0x0c>;
66 interrupt-parent = <&vic0>;
67 interrupts = <29>;
68 clocks = <&eclk EP93XX_CLK_KEYPAD>;
69 pinctrl-names = "default";
70 pinctrl-0 = <&keypad_default_pins>;
71 linux,keymap = <KEY_UP>,
72 <KEY_DOWN>,
73 <KEY_VOLUMEDOWN>,
74 <KEY_HOME>,
75 <KEY_RIGHT>,
76 <KEY_LEFT>,
77 <KEY_ENTER>,
78 <KEY_VOLUMEUP>,
79 <KEY_F6>,
80 <KEY_F8>,
81 <KEY_F9>,
82 <KEY_F10>,
83 <KEY_F1>,
84 <KEY_F2>,
85 <KEY_F3>,
86 <KEY_POWER>;
87 };
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