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 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: CZ.NIC's Turris Omnia LEDs driver
8
9 maintainers:
10 - Marek Behún <kabel@kernel.org>
11
12 description:
13 This module adds support for the RGB LEDs found on the front panel of the
14 Turris Omnia router. There are 12 RGB LEDs that are controlled by a
15 microcontroller that communicates via the I2C bus. Each LED is described
16 as a subnode of this I2C device.
17
18 properties:
19 compatible:
20 const: cznic,turris-omnia-leds
21
22 reg:
23 description: I2C slave address of the microcontroller.
24 maxItems: 1
25
26 "#address-cells":
27 const: 1
28
29 "#size-cells":
30 const: 0
31
32 patternProperties:
33 "^multi-led@[0-9a-b]$":
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
54 additionalProperties: false
55
56 examples:
57 - |
58
59 #include <dt-bindings/leds/common.h>
60
61 i2c {
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 ...
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