Based on kernel version 4.3. Page generated on 2015-11-02 12:47 EST.
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 };