1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/auxdisplay/gpio-7-segment.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: GPIO based LED segment display
8
9 maintainers:
10 - Chris Packham <chris.packham@alliedtelesis.co.nz>
11
12 properties:
13 compatible:
14 const: gpio-7-segment
15
16 segment-gpios:
17 description: |
18 An array of GPIOs one per segment. The first GPIO corresponds to the A
19 segment, the seventh GPIO corresponds to the G segment. Some LED blocks
20 also have a decimal point which can be specified as an optional eighth
21 segment.
22
23 -a-
24 | |
25 f b
26 | |
27 -g-
28 | |
29 e c
30 | |
31 -d- dp
32
33 minItems: 7
34 maxItems: 8
35
36 required:
37 - segment-gpios
38
39 additionalProperties: false
40
41 examples:
42 - |
43
44 #include <dt-bindings/gpio/gpio.h>
45
46 led-7seg {
47 compatible = "gpio-7-segment";
48 segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW>,
49 <&gpio 1 GPIO_ACTIVE_LOW>,
50 <&gpio 2 GPIO_ACTIVE_LOW>,
51 <&gpio 3 GPIO_ACTIVE_LOW>,
52 <&gpio 4 GPIO_ACTIVE_LOW>,
53 <&gpio 5 GPIO_ACTIVE_LOW>,
54 <&gpio 6 GPIO_ACTIVE_LOW>;
55 };
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