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
7title: GPIO based LED segment display
8
9maintainers:
10  - Chris Packham <chris.packham@alliedtelesis.co.nz>
11
12properties:
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
36required:
37  - segment-gpios
38
39additionalProperties: false
40
41examples:
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    };
56