Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/input/cirrus,ep9307-keypad.yaml
26308 views
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
    };

88


89