From 87360e3dd42bb627a9f2611f961728c0789e1c21 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 8 Jul 2015 14:44:21 +0200 Subject: dts: update to v4.2-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/leds/leds-ktd2692.txt | 50 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 dts/Bindings/leds/leds-ktd2692.txt (limited to 'dts/Bindings/leds/leds-ktd2692.txt') diff --git a/dts/Bindings/leds/leds-ktd2692.txt b/dts/Bindings/leds/leds-ktd2692.txt new file mode 100644 index 0000000000..8537374525 --- /dev/null +++ b/dts/Bindings/leds/leds-ktd2692.txt @@ -0,0 +1,50 @@ +* Kinetic Technologies - KTD2692 Flash LED Driver + +KTD2692 is the ideal power solution for high-power flash LEDs. +It uses ExpressWire single-wire programming for maximum flexibility. + +The ExpressWire interface through CTRL pin can control LED on/off and +enable/disable the IC, Movie(max 1/3 of Flash current) / Flash mode current, +Flash timeout, LVP(low voltage protection). + +Also, When the AUX pin is pulled high while CTRL pin is high, +LED current will be ramped up to the flash-mode current level. + +Required properties: +- compatible : Should be "kinetic,ktd2692". +- ctrl-gpios : Specifier of the GPIO connected to CTRL pin. +- aux-gpios : Specifier of the GPIO connected to AUX pin. + +Optional properties: +- vin-supply : "vin" LED supply (2.7V to 5.5V). + See Documentation/devicetree/bindings/regulator/regulator.txt + +A discrete LED element connected to the device must be represented by a child +node - See Documentation/devicetree/bindings/leds/common.txt + +Required properties for flash LED child nodes: + See Documentation/devicetree/bindings/leds/common.txt +- led-max-microamp : Minimum Threshold for Timer protection + is defined internally (Maximum 300mA). +- flash-max-microamp : Flash LED maximum current + Formula : I(mA) = 15000 / Rset. +- flash-max-timeout-us : Flash LED maximum timeout. + +Optional properties for flash LED child nodes: +- label : See Documentation/devicetree/bindings/leds/common.txt + +Example: + +ktd2692 { + compatible = "kinetic,ktd2692"; + ctrl-gpios = <&gpc0 1 0>; + aux-gpios = <&gpc0 2 0>; + vin-supply = <&vbat>; + + flash-led { + label = "ktd2692-flash"; + led-max-microamp = <300000>; + flash-max-microamp = <1500000>; + flash-max-timeout-us = <1835000>; + }; +}; -- cgit v1.2.3