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/leds/ti.lm3 4 $id: http://devicetree.org/schemas/leds/ti.lm36922.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Texas Instruments - LM3692x Highly Effi 7 title: Texas Instruments - LM3692x Highly Efficient White LED Driver
8 8
9 maintainers: 9 maintainers:
10 - Dan Murphy <dmurphy@ti.com> 10 - Dan Murphy <dmurphy@ti.com>
11 11
12 description: | 12 description: |
13 The LM3692x is an ultra-compact, highly effi 13 The LM3692x is an ultra-compact, highly efficient,
14 white-LED driver designed for LCD display ba 14 white-LED driver designed for LCD display backlighting.
15 15
16 The main difference between the LM36922 and 16 The main difference between the LM36922 and LM36923 is the number of
17 LED strings it supports. The LM36922 support 17 LED strings it supports. The LM36922 supports two strings while the LM36923
18 supports three strings. 18 supports three strings.
19 19
20 For more product information please see the 20 For more product information please see the link below:
21 https://www.ti.com/lit/ds/snvsa29/snvsa29.pd 21 https://www.ti.com/lit/ds/snvsa29/snvsa29.pdf
22 22
23 properties: 23 properties:
24 compatible: 24 compatible:
25 enum: 25 enum:
26 - ti,lm36922 26 - ti,lm36922
27 - ti,lm36923 27 - ti,lm36923
28 28
29 reg: 29 reg:
30 maxItems: 1 30 maxItems: 1
31 31
32 "#address-cells": 32 "#address-cells":
33 const: 1 33 const: 1
34 34
35 "#size-cells": 35 "#size-cells":
36 const: 0 36 const: 0
37 37
38 enable-gpios: 38 enable-gpios:
39 description: gpio pin to enable/disable th 39 description: gpio pin to enable/disable the device.
40 40
41 vled-supply: 41 vled-supply:
42 description: LED supply 42 description: LED supply
43 43
44 ti,ovp-microvolt: 44 ti,ovp-microvolt:
45 description: Overvoltage protection. 45 description: Overvoltage protection.
46 default: 29000000 46 default: 29000000
47 enum: [17000000, 21000000, 25000000, 29000 47 enum: [17000000, 21000000, 25000000, 29000000]
48 48
49 patternProperties: 49 patternProperties:
50 '^led@[0-3]$': 50 '^led@[0-3]$':
51 type: object 51 type: object
52 $ref: common.yaml 52 $ref: common.yaml
53 properties: 53 properties:
54 reg: 54 reg:
55 enum: [0, 1, 2, 3] 55 enum: [0, 1, 2, 3]
56 description: | 56 description: |
57 0 - Will enable all LED sync paths 57 0 - Will enable all LED sync paths
58 1 - Will enable the LED1 sync 58 1 - Will enable the LED1 sync
59 2 - Will enable the LED2 sync 59 2 - Will enable the LED2 sync
60 3 - Will enable the LED3 sync (LM369 60 3 - Will enable the LED3 sync (LM36923 only)
61 61
62 unevaluatedProperties: false 62 unevaluatedProperties: false
63 63
64 required: 64 required:
65 - compatible 65 - compatible
66 - reg 66 - reg
67 - "#address-cells" 67 - "#address-cells"
68 - "#size-cells" 68 - "#size-cells"
69 69
70 allOf: 70 allOf:
71 - if: 71 - if:
72 properties: 72 properties:
73 compatible: 73 compatible:
74 contains: 74 contains:
75 const: ti,lm36922 75 const: ti,lm36922
76 then: 76 then:
77 properties: 77 properties:
78 led@3: false 78 led@3: false
79 79
80 additionalProperties: false 80 additionalProperties: false
81 81
82 examples: 82 examples:
83 - | 83 - |
84 #include <dt-bindings/gpio/gpio.h> 84 #include <dt-bindings/gpio/gpio.h>
85 #include <dt-bindings/leds/common.h> 85 #include <dt-bindings/leds/common.h>
86 86
87 i2c { 87 i2c {
88 #address-cells = <1>; 88 #address-cells = <1>;
89 #size-cells = <0>; 89 #size-cells = <0>;
90 90
91 led-controller@36 { 91 led-controller@36 {
92 compatible = "ti,lm36922"; 92 compatible = "ti,lm36922";
93 reg = <0x36>; 93 reg = <0x36>;
94 #address-cells = <1>; 94 #address-cells = <1>;
95 #size-cells = <0>; 95 #size-cells = <0>;
96 96
97 enable-gpios = <&gpio1 28 GPIO_ACT 97 enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
98 vled-supply = <&vbatt>; 98 vled-supply = <&vbatt>;
99 ti,ovp-microvolt = <29000000>; 99 ti,ovp-microvolt = <29000000>;
100 100
101 led@0 { 101 led@0 {
102 reg = <0>; 102 reg = <0>;
103 function = LED_FUNCTION_BACKLI 103 function = LED_FUNCTION_BACKLIGHT;
104 color = <LED_COLOR_ID_WHITE>; 104 color = <LED_COLOR_ID_WHITE>;
105 linux,default-trigger = "backl 105 linux,default-trigger = "backlight";
106 led-max-microamp = <20000>; 106 led-max-microamp = <20000>;
107 }; 107 };
108 }; 108 };
109 }; 109 };
110 110
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