Documentation/devicetree/bindings/mfd/ti-lmu.txt

   1 TI LMU (Lighting Management Unit) device tree bindings
   2
   3 TI 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
  13 Required 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
  26 Optional property:
  27   - enable-gpios: A GPIO specifier for hardware enable pin.
  28
  29 Required node:
  30   - backlight: All LMU devices have backlight child nodes.
  31                For the properties, please refer to [1].
  32
  33 Optional 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
  47 lm3631@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
  98 lm3632@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                 ti,lcm-en1-gpio = <&pioC 0 GPIO_ACTIVE_HIGH>; /* PC0 */
 108                 ti,lcm-en2-gpio = <&pioC 1 GPIO_ACTIVE_HIGH>; /* PC1 */
 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
 143 lm3633@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
 188 lm3695@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
 204 lm3697@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 };