This patch adds device tree binding documentation for the flash cell of the Maxim max77693 multifunctional device.
Signed-off-by: Jacek Anaszewski <[email protected]> Signed-off-by: Andrzej Hajda <[email protected]> Acked-by: Kyungmin Park <[email protected]> Cc: Lee Jones <[email protected]> Cc: SangYoung Son <[email protected]> Cc: Samuel Ortiz <[email protected]> Cc: Bryan Wu <[email protected]> Cc: Richard Purdie <[email protected]> Cc: Rob Herring <[email protected]> Cc: Pawel Moll <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Ian Campbell <[email protected]> Cc: Kumar Gala <[email protected]> Cc: <[email protected]> --- Documentation/devicetree/bindings/mfd/max77693.txt | 74 ++++++++++++++++++++ 1 file changed, 74 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt index 01e9f30..50a8dad 100644 --- a/Documentation/devicetree/bindings/mfd/max77693.txt +++ b/Documentation/devicetree/bindings/mfd/max77693.txt @@ -41,6 +41,62 @@ Optional properties: To get more informations, please refer to documentaion. [*] refer Documentation/devicetree/bindings/pwm/pwm.txt +- led-flash : the LED submodule device node + +There are two led outputs available - fled1 and fled2. Each of them can +control a separate led or they can be connected together to double +the maximum current for a single connected led. One led is represented +by one child node. + +Required properties: +- compatible : must be "maxim,max77693-flash" + +Optional properties: +- maxim,fleds : array of current outputs in order: fled1, fled2 + Note: both current outputs can be connected to a single led + Possible values: + 0 - the output is left disconnected, + 1 - a diode is connected to the output. +- maxim,trigger-type : Array of trigger types in order: flash, torch + Possible trigger types: + 0 - Rising edge of the signal triggers the flash/torch, + 1 - Signal level controls duration of the flash/torch. +- maxim,trigger : Array of flags indicating which trigger can activate given led + in order: fled1, fled2 + Possible flag values (can be combined): + 1 - FLASH pin of the chip, + 2 - TORCH pin of the chip, + 4 - software via I2C command. +- maxim,boost-mode : + In boost mode the device can produce up to 1.2A of total current + on both outputs. The maximum current on each output is reduced + to 625mA then. If there are two child led nodes defined then boost + is enabled by default. + Possible values: + 0 - no boost, + 1 - adaptive mode, + 2 - fixed mode. +- maxim,boost-vout : Output voltage of the boost module in millivolts. +- maxim,vsys-min : Low input voltage level in millivolts. Flash is not fired + if chip estimates that system voltage could drop below this level due + to flash power consumption. + +A child node must be defined per sub-led. + +Required properties of the LED child node: +- label : see Documentation/devicetree/bindings/leds/common.txt +- maxim,fled_id : identifier of the fled output the led is connected to: + 1 - FLED1, + 2 - FLED2. + +Optional properties of the LED child node: +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt + Range: 15625 - 250000 +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt + Range: 15625 - 1000000 +- flash-timeout-microsec : see Documentation/devicetree/bindings/leds/common.txt + Range: 62500 - 1000000 + Example: max77693@66 { compatible = "maxim,max77693"; @@ -73,4 +129,22 @@ Example: pwms = <&pwm 0 40000 0>; pwm-names = "haptic"; }; + + led_flash: led-flash { + compatible = "maxim,max77693-flash"; + maxim,fleds = <1 0>; + maxim,trigger = <7 0>; + maxim,trigger-type = <0 1>; + maxim,boost-mode = <0>; + maxim,boost-vout = <5000>; + maxim,vsys-min = <2400>; + + camera-flash { + maxim,fled_id = <1> + label = "max77693-flash"; + max-microamp = <250000>; + flash-max-microamp = <1000000>; + flash-timeout-microsec = <1000000>; + } + }; }; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
