xref: /linux/Documentation/devicetree/bindings/leds/cznic,turris-omnia-leds.yaml (revision 69bfec7548f4c1595bac0e3ddfc0458a5af31f4c) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/leds/cznic,turris-omnia-leds.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: CZ.NIC's Turris Omnia LEDs driver
8
9maintainers:
10  - Marek Behún <kabel@kernel.org>
11
12description:
13  This module adds support for the RGB LEDs found on the front panel of the
14  Turris Omnia router. There are 12 RGB LEDs that are controlled by a
15  microcontroller that communicates via the I2C bus. Each LED is described
16  as a subnode of this I2C device.
17
18properties:
19  compatible:
20    const: cznic,turris-omnia-leds
21
22  reg:
23    description: I2C slave address of the microcontroller.
24    maxItems: 1
25
26  "#address-cells":
27    const: 1
28
29  "#size-cells":
30    const: 0
31
32patternProperties:
33  "^multi-led@[0-9a-b]$":
34    type: object
35    $ref: leds-class-multicolor.yaml#
36    unevaluatedProperties: false
37
38    description:
39      This node represents one of the RGB LED devices on Turris Omnia.
40      No subnodes need to be added for subchannels since this controller only
41      supports RGB LEDs.
42
43    properties:
44      reg:
45        minimum: 0
46        maximum: 11
47        description:
48          This property identifies one of the LEDs on the front panel of the
49          Turris Omnia router.
50
51    required:
52      - reg
53
54additionalProperties: false
55
56examples:
57  - |
58
59    #include <dt-bindings/leds/common.h>
60
61    i2c0 {
62        #address-cells = <1>;
63        #size-cells = <0>;
64
65        led-controller@2b {
66            compatible = "cznic,turris-omnia-leds";
67            reg = <0x2b>;
68            #address-cells = <1>;
69            #size-cells = <0>;
70
71            multi-led@0 {
72                /*
73                 * No subnodes are needed, this controller only supports RGB
74                 * LEDs.
75                 */
76                reg = <0>;
77                color = <LED_COLOR_ID_MULTI>;
78                function = LED_FUNCTION_POWER;
79                linux,default-trigger = "heartbeat";
80            };
81
82            multi-led@a {
83                reg = <0xa>;
84                color = <LED_COLOR_ID_MULTI>;
85                function = LED_FUNCTION_INDICATOR;
86                function-enumerator = <1>;
87            };
88        };
89    };
90
91...
92