1* Kinetic Technologies - KTD2692 Flash LED Driver
2
3KTD2692 is the ideal power solution for high-power flash LEDs.
4It uses ExpressWire single-wire programming for maximum flexibility.
5
6The ExpressWire interface through CTRL pin can control LED on/off and
7enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current,
8Flash timeout, LVP(low voltage protection).
9
10Also, When the AUX pin is pulled high while CTRL pin is high,
11LED current will be ramped up to the flash-mode current level.
12
13Required properties:
14- compatible : Should be "kinetic,ktd2692".
15- ctrl-gpios : Specifier of the GPIO connected to CTRL pin.
16- aux-gpios : Specifier of the GPIO connected to AUX pin.
17
18Optional properties:
19- vin-supply : "vin" LED supply (2.7V to 5.5V).
20  See Documentation/devicetree/bindings/regulator/regulator.txt
21
22A discrete LED element connected to the device must be represented by a child
23node - See Documentation/devicetree/bindings/leds/common.txt
24
25Required properties for flash LED child nodes:
26  See Documentation/devicetree/bindings/leds/common.txt
27- led-max-microamp : Minimum Threshold for Timer protection
28  is defined internally (Maximum 300mA).
29- flash-max-microamp : Flash LED maximum current
30  Formula : I(mA) = 15000 / Rset.
31- flash-max-timeout-us : Flash LED maximum timeout.
32
33Optional properties for flash LED child nodes:
34- label : See Documentation/devicetree/bindings/leds/common.txt
35
36Example:
37
38ktd2692 {
39	compatible = "kinetic,ktd2692";
40	ctrl-gpios = <&gpc0 1 0>;
41	aux-gpios = <&gpc0 2 0>;
42	vin-supply = <&vbat>;
43
44	flash-led {
45		label = "ktd2692-flash";
46		led-max-microamp = <300000>;
47		flash-max-microamp = <1500000>;
48		flash-max-timeout-us = <1835000>;
49	};
50};
51