0001 Qualcomm PM8058 LED driver
0002
0003 The Qualcomm PM8058 is a multi-functional device which contains
0004 an LED driver block for up to six LEDs: three normal LEDs, two
0005 "flash" LEDs and one "keypad backlight" LED. The names are
0006 quoted because sometimes these LED drivers are used for wildly
0007 different things than flash or keypad backlight: their names
0008 are more of a suggestion than a hard-wired usecase.
0009
0010 Hardware-wise the different LEDs support slightly different
0011 output currents. The "flash" LEDs do not need to charge nor
0012 do they support external triggers. They are just powerful LED
0013 drivers.
0014
0015 The LEDs appear as children to the PM8058 device, with the
0016 proper compatible string. For the PM8058 bindings see:
0017 mfd/qcom-pm8xxx.txt.
0018
0019 Each LED is represented as a sub-node of the syscon device. Each
0020 node's name represents the name of the corresponding LED.
0021
0022 LED sub-node properties:
0023
0024 Required properties:
0025 - compatible: one of
0026 "qcom,pm8058-led" (for the normal LEDs at 0x131, 0x132 and 0x133)
0027 "qcom,pm8058-keypad-led" (for the "keypad" LED at 0x48)
0028 "qcom,pm8058-flash-led" (for the "flash" LEDs at 0x49 and 0xFB)
0029
0030 Optional properties:
0031 - label: see Documentation/devicetree/bindings/leds/common.txt
0032 - default-state: see Documentation/devicetree/bindings/leds/common.txt
0033 - linux,default-trigger: see Documentation/devicetree/bindings/leds/common.txt
0034
0035 Example:
0036
0037 qcom,ssbi@500000 {
0038 pmicintc: pmic@0 {
0039 compatible = "qcom,pm8058";
0040 led@48 {
0041 compatible = "qcom,pm8058-keypad-led";
0042 reg = <0x48>;
0043 label = "pm8050:white:keypad";
0044 default-state = "off";
0045 };
0046 led@131 {
0047 compatible = "qcom,pm8058-led";
0048 reg = <0x131>;
0049 label = "pm8058:red";
0050 default-state = "off";
0051 };
0052 led@132 {
0053 compatible = "qcom,pm8058-led";
0054 reg = <0x132>;
0055 label = "pm8058:yellow";
0056 default-state = "off";
0057 linux,default-trigger = "mmc0";
0058 };
0059 led@133 {
0060 compatible = "qcom,pm8058-led";
0061 reg = <0x133>;
0062 label = "pm8058:green";
0063 default-state = "on";
0064 linux,default-trigger = "heartbeat";
0065 };
0066 };
0067 };
