xref: /linux/Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml (revision 184e56e77c06a7eef68a021e9d4b11a11a8ab096) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/leds/backlight/apple,dwi-bl.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Apple DWI 2-Wire Interface Backlight Controller
8
9maintainers:
10  - Nick Chan <towinchenmi@gmail.com>
11
12description:
13  Apple SoCs contain a 2-wire interface called DWI. On some Apple iPhones,
14  iPads and iPod touches with a LCD display, 1-2 backlight controllers
15  are connected via DWI. Interfacing with DWI controls all backlight
16  controllers at the same time. As such, the backlight controllers are
17  treated as a single controller regardless of the underlying
18  configuration.
19
20allOf:
21  - $ref: common.yaml#
22
23properties:
24  compatible:
25    items:
26      - enum:
27          - apple,s5l8960x-dwi-bl
28          - apple,t7000-dwi-bl
29          - apple,s8000-dwi-bl
30          - apple,t8010-dwi-bl
31          - apple,t8015-dwi-bl
32      - const: apple,dwi-bl
33
34  reg:
35    maxItems: 1
36
37  power-domains:
38    maxItems: 1
39
40required:
41  - compatible
42  - reg
43
44unevaluatedProperties: false
45
46examples:
47  - |
48    soc {
49      #address-cells = <2>;
50      #size-cells = <2>;
51
52      dwi_bl: backlight@20e200010 {
53        compatible = "apple,s5l8960x-dwi-bl", "apple,dwi-bl";
54        reg = <0x2 0x0e200010 0x0 0x8>;
55        power-domains = <&ps_dwi>;
56      };
57    };
58