diff options
Diffstat (limited to 'Documentation/devicetree/bindings/leds/leds-pm8058.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/leds-pm8058.txt | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-pm8058.txt b/Documentation/devicetree/bindings/leds/leds-pm8058.txt new file mode 100644 index 000000000..89584c49a --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-pm8058.txt @@ -0,0 +1,67 @@ +Qualcomm PM8058 LED driver + +The Qualcomm PM8058 is a multi-functional device which contains +an LED driver block for up to six LEDs: three normal LEDs, two +"flash" LEDs and one "keypad backlight" LED. The names are +quoted because sometimes these LED drivers are used for wildly +different things than flash or keypad backlight: their names +are more of a suggestion than a hard-wired usecase. + +Hardware-wise the different LEDs support slightly different +output currents. The "flash" LEDs do not need to charge nor +do they support external triggers. They are just powerful LED +drivers. + +The LEDs appear as children to the PM8058 device, with the +proper compatible string. For the PM8058 bindings see: +mfd/qcom-pm8xxx.txt. + +Each LED is represented as a sub-node of the syscon device. Each +node's name represents the name of the corresponding LED. + +LED sub-node properties: + +Required properties: +- compatible: one of + "qcom,pm8058-led" (for the normal LEDs at 0x131, 0x132 and 0x133) + "qcom,pm8058-keypad-led" (for the "keypad" LED at 0x48) + "qcom,pm8058-flash-led" (for the "flash" LEDs at 0x49 and 0xFB) + +Optional properties: +- label: see Documentation/devicetree/bindings/leds/common.txt +- default-state: see Documentation/devicetree/bindings/leds/common.txt +- linux,default-trigger: see Documentation/devicetree/bindings/leds/common.txt + +Example: + +qcom,ssbi@500000 { + pmicintc: pmic@0 { + compatible = "qcom,pm8058"; + led@48 { + compatible = "qcom,pm8058-keypad-led"; + reg = <0x48>; + label = "pm8050:white:keypad"; + default-state = "off"; + }; + led@131 { + compatible = "qcom,pm8058-led"; + reg = <0x131>; + label = "pm8058:red"; + default-state = "off"; + }; + led@132 { + compatible = "qcom,pm8058-led"; + reg = <0x132>; + label = "pm8058:yellow"; + default-state = "off"; + linux,default-trigger = "mmc0"; + }; + led@133 { + compatible = "qcom,pm8058-led"; + reg = <0x133>; + label = "pm8058:green"; + default-state = "on"; + linux,default-trigger = "heartbeat"; + }; + }; +}; |