Documentation/devicetree/bindings/leds/leds-pm8058.txt

   1 Qualcomm PM8058 LED driver
   2
   3 The Qualcomm PM8058 is a multi-functional device which contains
   4 an LED driver block for up to six LEDs: three normal LEDs, two
   5 "flash" LEDs and one "keypad backlight" LED. The names are
   6 quoted because sometimes these LED drivers are used for wildly
   7 different things than flash or keypad backlight: their names
   8 are more of a suggestion than a hard-wired usecase.
   9
  10 Hardware-wise the different LEDs support slightly different
  11 output currents. The "flash" LEDs do not need to charge nor
  12 do they support external triggers. They are just powerful LED
  13 drivers.
  14
  15 The LEDs appear as children to the PM8058 device, with the
  16 proper compatible string. For the PM8058 bindings see:
  17 mfd/qcom-pm8xxx.txt.
  18
  19 Each LED is represented as a sub-node of the syscon device. Each
  20 node's name represents the name of the corresponding LED.
  21
  22 LED sub-node properties:
  23
  24 Required properties:
  25 - compatible: one of
  26   "qcom,pm8058-led" (for the normal LEDs at 0x131, 0x132 and 0x133)
  27   "qcom,pm8058-keypad-led" (for the "keypad" LED at 0x48)
  28   "qcom,pm8058-flash-led" (for the "flash" LEDs at 0x49 and 0xFB)
  29
  30 Optional properties:
  31 - label: see Documentation/devicetree/bindings/leds/common.txt
  32 - default-state: see Documentation/devicetree/bindings/leds/common.txt
  33 - linux,default-trigger: see Documentation/devicetree/bindings/leds/common.txt
  34
  35 Example:
  36
  37 qcom,ssbi@500000 {
  38         pmicintc: pmic@0 {
  39                 compatible = "qcom,pm8058";
  40                 led@48 {
  41                         compatible = "qcom,pm8058-keypad-led";
  42                         reg = <0x48>;
  43                         label = "pm8050:white:keypad";
  44                         default-state = "off";
  45                 };
  46                 led@131 {
  47                         compatible = "qcom,pm8058-led";
  48                         reg = <0x131>;
  49                         label = "pm8058:red";
  50                         default-state = "off";
  51                 };
  52                 led@132 {
  53                         compatible = "qcom,pm8058-led";
  54                         reg = <0x132>;
  55                         label = "pm8058:yellow";
  56                         default-state = "off";
  57                         linux,default-trigger = "mmc0";
  58                 };
  59                 led@133 {
  60                         compatible = "qcom,pm8058-led";
  61                         reg = <0x133>;
  62                         label = "pm8058:green";
  63                         default-state = "on";
  64                         linux,default-trigger = "heartbeat";
  65                 };
  66         };
  67 };