1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/regulator/richtek,rtmv20-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Richtek RTMV20 laser diode regulator
8
9 maintainers:
10 - ChiYuan Huang <cy_huang@richtek.com>
11
12 description: |
13 Richtek RTMV20 is a load switch current regulator that can supply up to 6A.
14 It is used to drive laser diode. There're two signals for chip controls
15 (Enable/Fail), Enable pin to turn chip on, and Fail pin as fault indication.
16 There're still four pins for camera control, two inputs (strobe and vsync),
17 the others for outputs (fsin1 and fsin2). Strobe input to start the current
18 supply, vsync input from IR camera, and fsin1/fsin2 output for the optional.
19
20 properties:
21 compatible:
22 const: richtek,rtmv20
23
24 reg:
25 maxItems: 1
26
27 wakeup-source: true
28
29 interrupts:
30 maxItems: 1
31
32 enable-gpios:
33 description: A connection of the 'enable' gpio line.
34 maxItems: 1
35
36 richtek,ld-pulse-delay-us:
37 description: |
38 load current pulse delay in microsecond after strobe pin pulse high.
39 minimum: 0
40 maximum: 100000
41 default: 0
42
43 richtek,ld-pulse-width-us:
44 description: |
45 Load current pulse width in microsecond after strobe pin pulse high.
46 minimum: 0
47 maximum: 10000
48 default: 1200
49
50 richtek,fsin1-delay-us:
51 description: |
52 Fsin1 pulse high delay in microsecond after vsync signal pulse high.
53 minimum: 0
54 maximum: 100000
55 default: 23000
56
57 richtek,fsin1-width-us:
58 description: |
59 Fsin1 pulse high width in microsecond after vsync signal pulse high.
60 minimum: 40
61 maximum: 10000
62 default: 160
63
64 richtek,fsin2-delay-us:
65 description: |
66 Fsin2 pulse high delay in microsecond after vsync signal pulse high.
67 minimum: 0
68 maximum: 100000
69 default: 23000
70
71 richtek,fsin2-width-us:
72 description: |
73 Fsin2 pulse high width in microsecond after vsync signal pulse high.
74 minimum: 40
75 maximum: 10000
76 default: 160
77
78 richtek,es-pulse-width-us:
79 description: Eye safety function pulse width limit in microsecond.
80 minimum: 0
81 maximum: 10000
82 default: 1200
83
84 richtek,es-ld-current-microamp:
85 description: Eye safety function load current limit in microamp.
86 minimum: 0
87 maximum: 6000000
88 default: 3000000
89
90 richtek,lbp-level-microvolt:
91 description: Low battery protection level in microvolt.
92 minimum: 2400000
93 maximum: 3700000
94 default: 2700000
95
96 richtek,lbp-enable:
97 description: Low battery protection function enable control.
98 type: boolean
99
100 richtek,strobe-polarity-high:
101 description: Strobe pin active polarity control.
102 type: boolean
103
104 richtek,vsync-polarity-high:
105 description: Vsync pin active polarity control.
106 type: boolean
107
108 richtek,fsin-enable:
109 description: Fsin function enable control.
110 type: boolean
111
112 richtek,fsin-output:
113 description: Fsin function output control.
114 type: boolean
115
116 richtek,es-enable:
117 description: Eye safety function enable control.
118 type: boolean
119
120 lsw:
121 description: load switch current regulator description.
122 type: object
123 $ref: regulator.yaml#
124 unevaluatedProperties: false
125
126 required:
127 - compatible
128 - reg
129 - wakeup-source
130 - interrupts
131 - enable-gpios
132 - lsw
133
134 additionalProperties: false
135
136 examples:
137 - |
138 #include <dt-bindings/interrupt-controller/irq.h>
139 i2c {
140 #address-cells = <1>;
141 #size-cells = <0>;
142
143 rtmv20@34 {
144 compatible = "richtek,rtmv20";
145 reg = <0x34>;
146 wakeup-source;
147 interrupts-extended = <&gpio26 2 IRQ_TYPE_LEVEL_LOW>;
148 enable-gpios = <&gpio26 3 0>;
149
150 richtek,strobe-polarity-high;
151 richtek,vsync-polarity-high;
152
153 lsw {
154 regulator-name = "rtmv20,lsw";
155 regulator-min-microamp = <0>;
156 regulator-max-microamp = <6000000>;
157 };
158 };
159 };
160 ...
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