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linux
1TI LMU (Lighting Management Unit) device tree bindings
2
3TI LMU driver supports lighting devices below.
4
5 Name Child nodes
6 ------ ---------------------------------
7 LM3631 Backlight and regulator
8 LM3632 Backlight and regulator
9 LM3633 Backlight, LED and fault monitor
10 LM3695 Backlight
11 LM3697 Backlight and fault monitor
12
13Required properties:
14 - compatible: Should be one of:
15 "ti,lm3631"
16 "ti,lm3632"
17 "ti,lm3633"
18 "ti,lm3695"
19 "ti,lm3697"
20 - reg: I2C slave address.
21 0x11 for LM3632
22 0x29 for LM3631
23 0x36 for LM3633, LM3697
24 0x63 for LM3695
25
26Optional property:
27 - enable-gpios: A GPIO specifier for hardware enable pin.
28
29Required node:
30 - backlight: All LMU devices have backlight child nodes.
31 For the properties, please refer to [1].
32
33Optional nodes:
34 - fault-monitor: Hardware fault monitoring driver for LM3633 and LM3697.
35 Required properties:
36 - compatible: Should be one of:
37 "ti,lm3633-fault-monitor"
38 "ti,lm3697-fault-monitor"
39 - leds: LED properties for LM3633. Please refer to [2].
40 - regulators: Regulator properties for LM3631 and LM3632.
41 Please refer to [3].
42
43[1] ../leds/backlight/ti-lmu-backlight.txt
44[2] ../leds/leds-lm3633.txt
45[3] ../regulator/lm363x-regulator.txt
46
47lm3631@29 {
48 compatible = "ti,lm3631";
49 reg = <0x29>;
50
51 regulators {
52 compatible = "ti,lm363x-regulator";
53
54 vboost {
55 regulator-name = "lcd_boost";
56 regulator-min-microvolt = <4500000>;
57 regulator-max-microvolt = <6350000>;
58 regulator-always-on;
59 };
60
61 vcont {
62 regulator-name = "lcd_vcont";
63 regulator-min-microvolt = <1800000>;
64 regulator-max-microvolt = <3300000>;
65 };
66
67 voref {
68 regulator-name = "lcd_voref";
69 regulator-min-microvolt = <4000000>;
70 regulator-max-microvolt = <6000000>;
71 };
72
73 vpos {
74 regulator-name = "lcd_vpos";
75 regulator-min-microvolt = <4000000>;
76 regulator-max-microvolt = <6000000>;
77 regulator-boot-on;
78 };
79
80 vneg {
81 regulator-name = "lcd_vneg";
82 regulator-min-microvolt = <4000000>;
83 regulator-max-microvolt = <6000000>;
84 regulator-boot-on;
85 };
86 };
87
88 backlight {
89 compatible = "ti,lm3631-backlight";
90
91 lcd_bl {
92 led-sources = <0 1>;
93 ramp-up-msec = <300>;
94 };
95 };
96};
97
98lm3632@11 {
99 compatible = "ti,lm3632";
100 reg = <0x11>;
101
102 enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; /* PC2 */
103
104 regulators {
105 compatible = "ti,lm363x-regulator";
106
107 enable-gpios = <&pioC 0 GPIO_ACTIVE_HIGH>,
108 <&pioC 1 GPIO_ACTIVE_HIGH>;
109
110 vboost {
111 regulator-name = "lcd_boost";
112 regulator-min-microvolt = <4500000>;
113 regulator-max-microvolt = <6400000>;
114 regulator-always-on;
115 };
116
117 vpos {
118 regulator-name = "lcd_vpos";
119 regulator-min-microvolt = <4000000>;
120 regulator-max-microvolt = <6000000>;
121 };
122
123 vneg {
124 regulator-name = "lcd_vneg";
125 regulator-min-microvolt = <4000000>;
126 regulator-max-microvolt = <6000000>;
127 };
128 };
129
130 backlight {
131 compatible = "ti,lm3632-backlight";
132
133 pwms = <&pwm0 0 10000 0>; /* pwm number, period, polarity */
134 pwm-names = "lmu-backlight";
135
136 lcd {
137 led-sources = <0 1>;
138 pwm-period = <10000>;
139 };
140 };
141};
142
143lm3633@36 {
144 compatible = "ti,lm3633";
145 reg = <0x36>;
146
147 enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
148
149 backlight {
150 compatible = "ti,lm3633-backlight";
151
152 main {
153 label = "main_lcd";
154 led-sources = <1 2>;
155 ramp-up-msec = <500>;
156 ramp-down-msec = <500>;
157 };
158
159 front {
160 label = "front_lcd";
161 led-sources = <0>;
162 ramp-up-msec = <1000>;
163 ramp-down-msec = <0>;
164 };
165 };
166
167 leds {
168 compatible = "ti,lm3633-leds";
169
170 chan1 {
171 label = "status";
172 led-sources = <1>;
173 led-max-microamp = <6000>;
174 };
175
176 chan345 {
177 label = "rgb";
178 led-sources = <3 4 5>;
179 led-max-microamp = <10000>;
180 };
181 };
182
183 fault-monitor {
184 compatible = "ti,lm3633-fault-monitor";
185 };
186};
187
188lm3695@63 {
189 compatible = "ti,lm3695";
190 reg = <0x63>;
191
192 enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
193
194 backlight {
195 compatible = "ti,lm3695-backlight";
196
197 lcd {
198 label = "bl";
199 led-sources = <0 1>;
200 };
201 };
202};
203
204lm3697@36 {
205 compatible = "ti,lm3697";
206 reg = <0x36>;
207
208 enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
209
210 backlight {
211 compatible = "ti,lm3697-backlight";
212
213 lcd {
214 led-sources = <0 1 2>;
215 ramp-up-msec = <200>;
216 ramp-down-msec = <200>;
217 };
218 };
219
220 fault-monitor {
221 compatible = "ti,lm3697-fault-monitor";
222 };
223};