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