| * 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>; |
| }; |
| }; |
