Hi Jacek,
Thanks for the review.
On 2015년 04월 24일 22:29, Jacek Anaszewski wrote:
> On Thu, 23 Apr 2015 22:18:04 +0900
> Hi Ingi,
>
> Ingi Kim <ingi2.kim@xxxxxxxxxxx> wrote:
>
>> 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@xxxxxxxxxxx>
>> Acked-by: Seung-Woo Kim <sw0312.kim@xxxxxxxxxxx>
>> ---
>> .../devicetree/bindings/leds/leds-ktd2692.txt | 47
>> ++++++++++++++++++++++ 1 file changed, 47 insertions(+)
>> create mode 100644
>> Documentation/devicetree/bindings/leds/leds-ktd2692.txt
>>
>> diff --git a/Documentation/devicetree/bindings/leds/leds-ktd2692.txt
>> b/Documentation/devicetree/bindings/leds/leds-ktd2692.txt new file
>> mode 100644 index 0000000..708f2d4
>> --- /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
>
> Patch [1] makes the led-max-microamp property mandatory for
> the LEDs with configurable current for non-flash modes.
>
> It hasn't been merged yet as we are waiting for ack from DT maintainer.
>
>
Ok, I'll add it.
I saw discussion about introduction of new properties for Flash LED,
I also hope that patch[1] would be merged as soon as possible :)
>> +
>> +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>;
>> + };
>> +};
>
> [1] [PATCH v6] DT: leds: Improve description of flash LEDs related
> properties
>
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