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   LM3532       Backlight
   8   LM3631       Backlight and regulator
   9   LM3632       Backlight and regulator
  10   LM3633       Backlight, LED and fault monitor
  11   LM3695       Backlight
  12   LM3697       Backlight and fault monitor
  13
  14 Required properties:
  15   - compatible: Should be one of:
  16                 "ti,lm3532"
  17                 "ti,lm3631"
  18                 "ti,lm3632"
  19                 "ti,lm3633"
  20                 "ti,lm3695"
  21                 "ti,lm3697"
  22   - reg: I2C slave address.
  23          0x11 for LM3632
  24          0x29 for LM3631
  25          0x36 for LM3633, LM3697
  26          0x38 for LM3532
  27          0x63 for LM3695
  28
  29 Optional property:
  30   - enable-gpios: A GPIO specifier for hardware enable pin.
  31
  32 Required node:
  33   - backlight: All LMU devices have backlight child nodes.
  34                For the properties, please refer to [1].
  35
  36 Optional nodes:
  37   - fault-monitor: Hardware fault monitoring driver for LM3633 and LM3697.
  38     Required properties:
  39       - compatible: Should be one of:
  40                     "ti,lm3633-fault-monitor"
  41                     "ti,lm3697-fault-monitor"
  42   - leds: LED properties for LM3633. Please refer to [2].
  43   - regulators: Regulator properties for LM3631 and LM3632.
  44                 Please refer to [3].
  45
  46 [1] ../leds/backlight/ti-lmu-backlight.txt
  47 [2] ../leds/leds-lm3633.txt
  48 [3] ../regulator/lm363x-regulator.txt
  49
  50 lm3532@38 {
  51         compatible = "ti,lm3532";
  52         reg = <0x38>;
  53
  54         enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
  55
  56         backlight {
  57                 compatible = "ti,lm3532-backlight";
  58
  59                 lcd {
  60                         led-sources = <0 1 2>;
  61                         ramp-up-msec = <30>;
  62                         ramp-down-msec = <0>;
  63                 };
  64         };
  65 };
  66
  67 lm3631@29 {
  68         compatible = "ti,lm3631";
  69         reg = <0x29>;
  70
  71         regulators {
  72                 compatible = "ti,lm363x-regulator";
  73
  74                 vboost {
  75                         regulator-name = "lcd_boost";
  76                         regulator-min-microvolt = <4500000>;
  77                         regulator-max-microvolt = <6350000>;
  78                         regulator-always-on;
  79                 };
  80
  81                 vcont {
  82                         regulator-name = "lcd_vcont";
  83                         regulator-min-microvolt = <1800000>;
  84                         regulator-max-microvolt = <3300000>;
  85                 };
  86
  87                 voref {
  88                         regulator-name = "lcd_voref";
  89                         regulator-min-microvolt = <4000000>;
  90                         regulator-max-microvolt = <6000000>;
  91                 };
  92
  93                 vpos {
  94                         regulator-name = "lcd_vpos";
  95                         regulator-min-microvolt = <4000000>;
  96                         regulator-max-microvolt = <6000000>;
  97                         regulator-boot-on;
  98                 };
  99
 100                 vneg {
 101                         regulator-name = "lcd_vneg";
 102                         regulator-min-microvolt = <4000000>;
 103                         regulator-max-microvolt = <6000000>;
 104                         regulator-boot-on;
 105                 };
 106         };
 107
 108         backlight {
 109                 compatible = "ti,lm3631-backlight";
 110
 111                 lcd_bl {
 112                         led-sources = <0 1>;
 113                         ramp-up-msec = <300>;
 114                 };
 115         };
 116 };
 117
 118 lm3632@11 {
 119         compatible = "ti,lm3632";
 120         reg = <0x11>;
 121
 122         enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>; /* PC2 */
 123
 124         regulators {
 125                 compatible = "ti,lm363x-regulator";
 126
 127                 ti,lcm-en1-gpio = <&pioC 0 GPIO_ACTIVE_HIGH>; /* PC0 */
 128                 ti,lcm-en2-gpio = <&pioC 1 GPIO_ACTIVE_HIGH>; /* PC1 */
 129
 130                 vboost {
 131                         regulator-name = "lcd_boost";
 132                         regulator-min-microvolt = <4500000>;
 133                         regulator-max-microvolt = <6400000>;
 134                         regulator-always-on;
 135                 };
 136
 137                 vpos {
 138                         regulator-name = "lcd_vpos";
 139                         regulator-min-microvolt = <4000000>;
 140                         regulator-max-microvolt = <6000000>;
 141                 };
 142
 143                 vneg {
 144                         regulator-name = "lcd_vneg";
 145                         regulator-min-microvolt = <4000000>;
 146                         regulator-max-microvolt = <6000000>;
 147                 };
 148         };
 149
 150         backlight {
 151                 compatible = "ti,lm3632-backlight";
 152
 153                 pwms = <&pwm0 0 10000 0>; /* pwm number, period, polarity */
 154                 pwm-names = "lmu-backlight";
 155
 156                 lcd {
 157                         led-sources = <0 1>;
 158                         pwm-period = <10000>;
 159                 };
 160         };
 161 };
 162
 163 lm3633@36 {
 164         compatible = "ti,lm3633";
 165         reg = <0x36>;
 166
 167         enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
 168
 169         backlight {
 170                 compatible = "ti,lm3633-backlight";
 171
 172                 main {
 173                         label = "main_lcd";
 174                         led-sources = <1 2>;
 175                         ramp-up-msec = <500>;
 176                         ramp-down-msec = <500>;
 177                 };
 178
 179                 front {
 180                         label = "front_lcd";
 181                         led-sources = <0>;
 182                         ramp-up-msec = <1000>;
 183                         ramp-down-msec = <0>;
 184                 };
 185         };
 186
 187         leds {
 188                 compatible = "ti,lm3633-leds";
 189
 190                 chan1 {
 191                         label = "status";
 192                         led-sources = <1>;
 193                         led-max-microamp = <6000>;
 194                 };
 195
 196                 chan345 {
 197                         label = "rgb";
 198                         led-sources = <3 4 5>;
 199                         led-max-microamp = <10000>;
 200                 };
 201         };
 202
 203         fault-monitor {
 204                 compatible = "ti,lm3633-fault-monitor";
 205         };
 206 };
 207
 208 lm3695@63 {
 209         compatible = "ti,lm3695";
 210         reg = <0x63>;
 211
 212         enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
 213
 214         backlight {
 215                 compatible = "ti,lm3695-backlight";
 216
 217                 lcd {
 218                         label = "bl";
 219                         led-sources = <0 1>;
 220                 };
 221         };
 222 };
 223
 224 lm3697@36 {
 225         compatible = "ti,lm3697";
 226         reg = <0x36>;
 227
 228         enable-gpios = <&pioC 2 GPIO_ACTIVE_HIGH>;
 229
 230         backlight {
 231                 compatible = "ti,lm3697-backlight";
 232
 233                 lcd {
 234                         led-sources = <0 1 2>;
 235                         ramp-up-msec = <200>;
 236                         ramp-down-msec = <200>;
 237                 };
 238         };
 239
 240         fault-monitor {
 241                 compatible = "ti,lm3697-fault-monitor";
 242         };
 243 };