Documentation/devicetree/bindings/video/backlight/pm8941-wled.txt

   1 Binding for Qualcomm PM8941 WLED driver
   2
   3 Required properties:
   4 - compatible: should be "qcom,pm8941-wled"
   5 - reg: slave address
   6
   7 Optional properties:
   8 - label: The name of the backlight device
   9 - qcom,cs-out: bool; enable current sink output
  10 - qcom,cabc: bool; enable content adaptive backlight control
  11 - qcom,ext-gen: bool; use externally generated modulator signal to dim
  12 - qcom,current-limit: mA; per-string current limit; value from 0 to 25
  13         default: 20mA
  14 - qcom,current-boost-limit: mA; boost current limit; one of:
  15         105, 385, 525, 805, 980, 1260, 1400, 1680
  16         default: 805mA
  17 - qcom,switching-freq: kHz; switching frequency; one of:
  18         600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371,
  19         1600, 1920, 2400, 3200, 4800, 9600,
  20         default: 1600kHz
  21 - qcom,ovp: V; Over-voltage protection limit; one of:
  22         27, 29, 32, 35
  23         default: 29V
  24 - qcom,num-strings: #; number of led strings attached; value from 1 to 3
  25         default: 2
  26
  27 Example:
  28
  29 pm8941-wled@d800 {
  30         compatible = "qcom,pm8941-wled";
  31         reg = <0xd800>;
  32         label = "backlight";
  33
  34         qcom,cs-out;
  35         qcom,current-limit = <20>;
  36         qcom,current-boost-limit = <805>;
  37         qcom,switching-freq = <1600>;
  38         qcom,ovp = <29>;
  39         qcom,num-strings = <2>;
  40 };