Merge tag 'backlight-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/lee...
[platform/kernel/linux-rpi.git] / Documentation / devicetree / bindings / leds / backlight / kinetic,ktz8866.yaml
1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/kinetic,ktz8866.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Kinetic Technologies KTZ8866 backlight
8
9 maintainers:
10   - Jianhua Lu <lujianhua000@gmail.com>
11
12 description: |
13   The Kinetic Technologies KTZ8866 is a high efficiency 6-channels-current-sinks
14   led backlight with dual lcd bias power.
15   https://www.kinet-ic.com/ktz8866/
16
17 allOf:
18   - $ref: common.yaml#
19
20 properties:
21   compatible:
22     const: kinetic,ktz8866
23
24   reg:
25     maxItems: 1
26
27   vddpos-supply:
28     description: positive boost supply regulator.
29
30   vddneg-supply:
31     description: negative boost supply regulator.
32
33   enable-gpios:
34     description: GPIO to use to enable/disable the backlight (HWEN pin).
35     maxItems: 1
36
37   current-num-sinks:
38     description: number of the LED current sinks' channels.
39     $ref: /schemas/types.yaml#/definitions/uint32
40     enum: [1, 2, 3, 4, 5, 6]
41
42   kinetic,current-ramp-delay-ms:
43     description: |
44       LED current ramping delay time in milliseconds, note that the
45       case 1 will be mapped to 1μs.
46     enum: [1, 2, 4, 8, 16, 32, 64, 128, 192, 256, 320, 384, 448, 512, 576, 640]
47
48   kinetic,led-enable-ramp-delay-ms:
49     description: |
50       LED on/off ramping delay time in milliseconds, note that the case 0 will be
51       mapped to 512μs because ktz8866 can't ramp faster than it.
52     enum: [0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384]
53
54   kinetic,enable-lcd-bias:
55     description: Set if we want to output bias power supply for LCD.
56     type: boolean
57
58 required:
59   - compatible
60   - reg
61   - vddpos-supply
62   - vddneg-supply
63   - enable-gpios
64
65 unevaluatedProperties: false
66
67 examples:
68   - |
69     #include <dt-bindings/gpio/gpio.h>
70
71     i2c {
72         #address-cells = <1>;
73         #size-cells = <0>;
74
75         backlight@11 {
76             compatible = "kinetic,ktz8866";
77             reg = <0x11>;
78             vddpos-supply = <&bl_vddpos_5p5>;
79             vddneg-supply = <&bl_vddneg_5p5>;
80             enable-gpios = <&tlmm 139 GPIO_ACTIVE_HIGH>;
81             current-num-sinks = <5>;
82             kinetic,current-ramp-delay-ms = <128>;
83             kinetic,led-enable-ramp-delay-ms = <1>;
84             kinetic,enable-lcd-bias;
85         };
86     };