diff options
| author | Courtney Cavin <courtney.cavin@sonymobile.com> | 2015-03-12 08:47:07 -0700 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2015-03-30 11:55:49 -0700 |
| commit | cbbd896f25316e823af228432c690c35992d60f4 (patch) | |
| tree | 2c75ceb4a6eba1a7179075de38240b51e7e960ad /Documentation | |
| parent | a44b0f5edfc63dc06af9bb0ae473f7852d8d2cb6 (diff) | |
| download | linux-stable-cbbd896f25316e823af228432c690c35992d60f4.tar.gz linux-stable-cbbd896f25316e823af228432c690c35992d60f4.tar.bz2 linux-stable-cbbd896f25316e823af228432c690c35992d60f4.zip | |
leds: add DT binding for Qualcomm PM8941 WLED block
This adds device tree binding documentation for the WLED ('White' LED)
block on Qualcomm's PM8941 PMICs.
Signed-off-by: Courtney Cavin <courtney.cavin@sonymobile.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt new file mode 100644 index 000000000000..a85a964d61f5 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-pm8941-wled.txt @@ -0,0 +1,43 @@ +Binding for Qualcomm PM8941 WLED driver + +Required properties: +- compatible: should be "qcom,pm8941-wled" +- reg: slave address + +Optional properties: +- label: The label for this led + See Documentation/devicetree/bindings/leds/common.txt +- linux,default-trigger: Default trigger assigned to the LED + See Documentation/devicetree/bindings/leds/common.txt +- qcom,cs-out: bool; enable current sink output +- qcom,cabc: bool; enable content adaptive backlight control +- qcom,ext-gen: bool; use externally generated modulator signal to dim +- qcom,current-limit: mA; per-string current limit; value from 0 to 25 + default: 20mA +- qcom,current-boost-limit: mA; boost current limit; one of: + 105, 385, 525, 805, 980, 1260, 1400, 1680 + default: 805mA +- qcom,switching-freq: kHz; switching frequency; one of: + 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371, + 1600, 1920, 2400, 3200, 4800, 9600, + default: 1600kHz +- qcom,ovp: V; Over-voltage protection limit; one of: + 27, 29, 32, 35 + default: 29V +- qcom,num-strings: #; number of led strings attached; value from 1 to 3 + default: 2 + +Example: + +pm8941-wled@d800 { + compatible = "qcom,pm8941-wled"; + reg = <0xd800>; + label = "backlight"; + + qcom,cs-out; + qcom,current-limit = <20>; + qcom,current-boost-limit = <805>; + qcom,switching-freq = <1600>; + qcom,ovp = <29>; + qcom,num-strings = <2>; +}; |