Add the binding for the Texas Instruments LM3533 lighting power solution. Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx> --- Documentation/devicetree/bindings/mfd/lm3533.txt | 183 +++++++++++++++++++++++ 1 file changed, 183 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/lm3533.txt diff --git a/Documentation/devicetree/bindings/mfd/lm3533.txt b/Documentation/devicetree/bindings/mfd/lm3533.txt new file mode 100644 index 000000000000..3cc41695a544 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/lm3533.txt @@ -0,0 +1,183 @@ +Texas Instruments LM3533 binding + +This binding describes the Texas Instruments LM3533, a lighting power solution +for smartphone handsets. The common properties are described directly in the +node, while each individual component are described in an optional subnode. + +- compatible: + Usage: required + Value type: <stringlist> + Definition: must be: + "ti,lm3533" + +- reg: + Usage: required + Value type: <u32> + Definition: i2c address of the LM3533 chip + +- ti,hwen-gpios: + Usage: required + Value type: <prop-encoded-array> + Definition: reference to gpio pin connected to the HWEN input; as + specified in "gpio/gpio.txt" + +- ti,als-supply: + Usage: optional + Value type: <prop-encoded-array> + Definition: reference to regulator powering the V_als input; as + specified in "regulator/regulator.txt" + +- ti,boost-freq: + Usage: required + Value type: <u32> + Definition: switch-frequency of the boost converter, must be either: + 500000 or 1000000 + +- ti,boost-ovp: + Usage: required + Value type: <u32> + Definition: over voltage protection limit, must be one of: 16, 24, 32 + or 40 + +- #address-cells: + Usage: required + Value type: <u32> + Definition: must be 1 + +- #size-cells: + Usage: required + Value type: <u32> + Definition: must be 0 + += ALS SUBNODE +The als subnode must be named "als", it carries the als related properties. + +- ti,als-resistance: + Usage: required (unless ti,pwm-mode is specified) + Value type: <u32> + Definition: specifies the resistor value (R_als), in Ohm. Valid values + ranges from 200kOhm to 1574Ohm. + +- ti,pwm-mode: + Usage: optional + Value type: <empty> + Definition: specifies, if present, that the als should operate in pwm + mode - rather than analog mode + += BACKLIGHT NODES +Backlight subnodes must be named "backlight", they carry the backlight related +properties. + +- reg: + Usage: required + Value type: <u32> + Definition: specifies which of the two backlights this node corresponds + to + +- default-brightness: + Usage: optional + Value type: <32> + Definition: specifies the default brightness for the backlight, in + units of brightness [0-255] + +- label: + Usage: required + Value type: <string> + Definition: specifies a name of this backlight + +- led-max-microamp: + Usage: required + Value type: <u32> + Definition: specifies the max current for this backlight, in uA, as + described in "leds/common.txt" + +- ti,pwm-zones: + Usage: optional + Value type: <u32 list> + Definition: lists the ALS zones to be PWM controlled for this backlight, + the values in the list are in the range [0 - 4] + += LED NODES +LED subnodes must be named "led", they carry the LED related properties. + +- reg: + Usage: required + Value type: <u32> + Definition: specifies which of the four LEDs this node corresponds to + +- linux,default-trigger: + Usage: optional + Value type: <string> + Definition: specifies the default trigger for the LED, as described in + "leds/common.txt" + +- label: + Usage: required + Value type: <string> + Definition: specifies a name of this LED, as described in + "leds/common.txt" + +- led-max-microamp: + Usage: required + Value type: <u32> + Definition: specifies the max current for this LED, in uA, as described + in "leds/common.txt" + +- ti,pwm-zones: + Usage: optional + Value type: <u32 list> + Definition: lists the ALS zones to be PWM controlled for this LED, the + values in the list are in the range [0 - 4] + += EXAMPLE + +i2c@12460000 { + compatible = "qcom,i2c-qup-v1.1.1"; + ... + + lm3533@36 { + compatible = "ti,lm3533"; + reg = <0x36>; + + ti,hwen-gpios = <&pm8921_gpio 26 GPIO_ACTIVE_HIGH>; + ti,als-supply = <&pm8921_l11>; + + ti,boost-freq = <500000>; + ti,boost-ovp = <24>; + + #address-cells = <1>; + #size-cells = <0>; + + als { + ti,als-resistance = <200000>; + }; + + backlight@0 { + reg = <0>; + label = "backlight"; + + led-max-microamp = <20200>; + }; + + led@0 { + reg = <0>; + label = "red"; + + led-max-microamp = <5000>; + }; + + led@1 { + reg = <1>; + label = "green"; + + led-max-microamp = <5000>; + }; + + led@2 { + reg = <2>; + label = "blue"; + + led-max-microamp = <5000>; + }; + }; + -- 2.4.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html