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| author | Ingi Kim <ingi2.kim@samsung.com> | 2015-01-29 18:22:37 +0900 |
|---|---|---|
| committer | Seung-Woo Kim <sw0312.kim@samsung.com> | 2016-12-14 13:42:58 +0900 |
| commit | 6b39f108c0a75c3c0e0c7ed4fc5b2eb4a806951a (patch) | |
| tree | 15e4c1874e40a29b719b9b1c32296f3e5e5a24b1 /Documentation | |
| parent | 22f5bf93e77026edb9247c9f1506d9af5a1fae6c (diff) | |
LOCAL / leds: ktd2692: add device tree bindings for ktd2692
This patch adds the device tree bindings for ktd2692 flash LEDs.
Add Optional properties of child node for Flash LED
Signed-off-by: Ingi Kim <ingi2.kim@samsung.com>
[k.kozlowski: rebased on 4.1]
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/leds-ktd2692.txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-ktd2692.txt b/Documentation/devicetree/bindings/leds/leds-ktd2692.txt new file mode 100644 index 000000000000..708f2d45981f --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-ktd2692.txt @@ -0,0 +1,47 @@ +* 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: "kinetic,ktd2692" +- ctrl-gpio : gpio pin in order control CTRL pin +- aux-gpio : gpio pin in order control 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 +- 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-gpio = <&gpc0 1 0>; + aux-gpio = <&gpc0 2 0>; + vin-supply = <&vbat>; + + flash-led { + label = "ktd2692-flash"; + flash-max-microamp = <1500000>; + flash-max-timeout-us = <1835000>; + }; +}; |