43 lines
1.2 KiB
Plaintext
43 lines
1.2 KiB
Plaintext
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Binding for Qualcomm PM8941 WLED driver
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Required properties:
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- compatible: should be "qcom,pm8941-wled"
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- reg: slave address
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Optional properties:
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- default-brightness: brightness value on boot, value from: 0-4095
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default: 2048
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- label: The name of the backlight device
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- qcom,cs-out: bool; enable current sink output
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- qcom,cabc: bool; enable content adaptive backlight control
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- qcom,ext-gen: bool; use externally generated modulator signal to dim
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- qcom,current-limit: mA; per-string current limit; value from 0 to 25
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default: 20mA
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- qcom,current-boost-limit: mA; boost current limit; one of:
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105, 385, 525, 805, 980, 1260, 1400, 1680
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default: 805mA
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- qcom,switching-freq: kHz; switching frequency; one of:
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600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371,
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1600, 1920, 2400, 3200, 4800, 9600,
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default: 1600kHz
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- qcom,ovp: V; Over-voltage protection limit; one of:
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27, 29, 32, 35
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default: 29V
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- qcom,num-strings: #; number of led strings attached; value from 1 to 3
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default: 2
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Example:
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pm8941-wled@d800 {
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compatible = "qcom,pm8941-wled";
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reg = <0xd800>;
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label = "backlight";
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qcom,cs-out;
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qcom,current-limit = <20>;
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qcom,current-boost-limit = <805>;
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qcom,switching-freq = <1600>;
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qcom,ovp = <29>;
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qcom,num-strings = <2>;
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};
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