| Message ID | 1430205530-20873-5-git-send-email-j.anaszewski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Apr 28, 2015 at 12:18 AM, Jacek Anaszewski <j.anaszewski@samsung.com> wrote: > This patch adds device tree binding documentation for > 1.5A Step-Up Current Regulator for Flash LEDs. > Applied, thanks, -Bryan > Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> > Cc: Bryan Wu <cooloney@gmail.com> > Cc: Richard Purdie <rpurdie@rpsys.net> > Cc: devicetree@vger.kernel.org > --- > .../devicetree/bindings/leds/leds-aat1290.txt | 41 ++++++++++++++++++++ > 1 file changed, 41 insertions(+) > create mode 100644 Documentation/devicetree/bindings/leds/leds-aat1290.txt > > diff --git a/Documentation/devicetree/bindings/leds/leds-aat1290.txt b/Documentation/devicetree/bindings/leds/leds-aat1290.txt > new file mode 100644 > index 0000000..ef88b9c > --- /dev/null > +++ b/Documentation/devicetree/bindings/leds/leds-aat1290.txt > @@ -0,0 +1,41 @@ > +* Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs > + > +The device is controlled through two pins: FL_EN and EN_SET. The pins when, > +asserted high, enable flash strobe and movie mode (max 1/2 of flash current) > +respectively. > + > +Required properties: > + > +- compatible : Must be "skyworks,aat1290". > +- flen-gpios : Must be device tree identifier of the flash device FL_EN pin. > +- enset-gpios : Must be device tree identifier of the flash device EN_SET pin. > + > +A discrete LED element connected to the device must be represented by a child > +node - see Documentation/devicetree/bindings/leds/common.txt. > + > +Required properties of the LED child node: > +- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt > +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt > + Maximum flash LED supply current can be calculated using > + following formula: I = 1A * 162kohm / Rset. > +- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt > + Maximum flash timeout can be calculated using following > + formula: T = 8.82 * 10^9 * Ct. > + > +Optional properties of the LED child node: > +- label : see Documentation/devicetree/bindings/leds/common.txt > + > +Example (by Ct = 220nF, Rset = 160kohm): > + > +aat1290 { > + compatible = "skyworks,aat1290"; > + flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>; > + enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>; > + > + camera_flash: flash-led { > + label = "aat1290-flash"; > + led-max-microamp = <520833>; > + flash-max-microamp = <1012500>; > + flash-timeout-us = <1940000>; > + }; > +}; > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/leds/leds-aat1290.txt b/Documentation/devicetree/bindings/leds/leds-aat1290.txt new file mode 100644 index 0000000..ef88b9c --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-aat1290.txt @@ -0,0 +1,41 @@ +* Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs + +The device is controlled through two pins: FL_EN and EN_SET. The pins when, +asserted high, enable flash strobe and movie mode (max 1/2 of flash current) +respectively. + +Required properties: + +- compatible : Must be "skyworks,aat1290". +- flen-gpios : Must be device tree identifier of the flash device FL_EN pin. +- enset-gpios : Must be device tree identifier of the flash device EN_SET pin. + +A discrete LED element connected to the device must be represented by a child +node - see Documentation/devicetree/bindings/leds/common.txt. + +Required properties of the LED child node: +- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt + Maximum flash LED supply current can be calculated using + following formula: I = 1A * 162kohm / Rset. +- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt + Maximum flash timeout can be calculated using following + formula: T = 8.82 * 10^9 * Ct. + +Optional properties of the LED child node: +- label : see Documentation/devicetree/bindings/leds/common.txt + +Example (by Ct = 220nF, Rset = 160kohm): + +aat1290 { + compatible = "skyworks,aat1290"; + flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>; + enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>; + + camera_flash: flash-led { + label = "aat1290-flash"; + led-max-microamp = <520833>; + flash-max-microamp = <1012500>; + flash-timeout-us = <1940000>; + }; +};