xref: /freebsd/sys/contrib/device-tree/Bindings/auxdisplay/holtek,ht16k33.yaml (revision 924226fba12cc9a228c73b956e1b7fa24c60b055) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/auxdisplay/holtek,ht16k33.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Holtek HT16K33 RAM mapping 16*8 LED controller with keyscan
8
9maintainers:
10  - Robin van der Gracht <robin@protonic.nl>
11
12allOf:
13  - $ref: "/schemas/input/matrix-keymap.yaml#"
14
15properties:
16  compatible:
17    const: holtek,ht16k33
18
19  reg:
20    maxItems: 1
21
22  refresh-rate-hz:
23    maxItems: 1
24    description: Display update interval in Hertz
25
26  interrupts:
27    maxItems: 1
28
29  debounce-delay-ms:
30    maxItems: 1
31    description: Debouncing interval time in milliseconds
32
33  linux,keymap: true
34
35  linux,no-autorepeat:
36    description: Disable keyrepeat
37
38  default-brightness-level:
39    minimum: 1
40    maximum: 16
41    default: 16
42    description: Initial brightness level
43
44required:
45  - compatible
46  - reg
47  - refresh-rate-hz
48
49additionalProperties: false
50
51examples:
52  - |
53    #include <dt-bindings/interrupt-controller/irq.h>
54    #include <dt-bindings/input/input.h>
55    i2c1 {
56            #address-cells = <1>;
57            #size-cells = <0>;
58
59            ht16k33: ht16k33@70 {
60                    compatible = "holtek,ht16k33";
61                    reg = <0x70>;
62                    refresh-rate-hz = <20>;
63                    interrupt-parent = <&gpio4>;
64                    interrupts = <5 (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING)>;
65                    debounce-delay-ms = <50>;
66                    linux,keymap = <MATRIX_KEY(2, 0, KEY_F6)>,
67                                   <MATRIX_KEY(3, 0, KEY_F8)>,
68                                   <MATRIX_KEY(4, 0, KEY_F10)>,
69                                   <MATRIX_KEY(5, 0, KEY_F4)>,
70                                   <MATRIX_KEY(6, 0, KEY_F2)>,
71                                   <MATRIX_KEY(2, 1, KEY_F5)>,
72                                   <MATRIX_KEY(3, 1, KEY_F7)>,
73                                   <MATRIX_KEY(4, 1, KEY_F9)>,
74                                   <MATRIX_KEY(5, 1, KEY_F3)>,
75                                   <MATRIX_KEY(6, 1, KEY_F1)>;
76            };
77      };
78