From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacek Anaszewski Subject: [PATCH/RFC v10 09/19] DT: Add documentation for the mfd Maxim max77693 Date: Fri, 09 Jan 2015 16:22:59 +0100 Message-ID: <1420816989-1808-10-git-send-email-j.anaszewski@samsung.com> References: <1420816989-1808-1-git-send-email-j.anaszewski@samsung.com> Return-path: In-reply-to: <1420816989-1808-1-git-send-email-j.anaszewski@samsung.com> Sender: linux-media-owner@vger.kernel.org To: linux-leds@vger.kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Cc: devicetree@vger.kernel.org, kyungmin.park@samsung.com, b.zolnierkie@samsung.com, pavel@ucw.cz, cooloney@gmail.com, rpurdie@rpsys.net, sakari.ailus@iki.fi, s.nawrocki@samsung.com, Jacek Anaszewski , Andrzej Hajda , Lee Jones , Chanwoo Choi , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala List-Id: linux-leds@vger.kernel.org This patch adds device tree binding documentation for the flash cell of the Maxim max77693 multifunctional device. Signed-off-by: Jacek Anaszewski Signed-off-by: Andrzej Hajda Acked-by: Kyungmin Park Cc: Lee Jones Cc: Chanwoo Choi Cc: Bryan Wu Cc: Richard Purdie Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala --- Documentation/devicetree/bindings/mfd/max77693.txt | 69 ++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt index 01e9f30..ef184f0 100644 --- a/Documentation/devicetree/bindings/mfd/max77693.txt +++ b/Documentation/devicetree/bindings/mfd/max77693.txt @@ -41,7 +41,52 @@ Optional properties: To get more informations, please refer to documentaion. [*] refer Documentation/devicetree/bindings/pwm/pwm.txt +- led : 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-led". + +Optional properties: +- maxim,trigger-type : Flash trigger type. + Possible trigger types: + MAX77693_LED_TRIG_TYPE_EDGE - Rising edge of the signal triggers + the flash, + MAX77693_LED_TRIG_TYPE_LEVEL - Strobe pulse length controls + duration of the flash. +- 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 not enabled explicitly, boost setting defaults to + MAX77693_LED_BOOST_FIXED in case both current sources are used. + Possible values: + MAX77693_LED_BOOST_OFF - no boost, + MAX77693_LED_BOOST_ADAPTIVE - adaptive mode, + MAX77693_LED_BOOST_FIXED - 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. + +Required properties of the LED child node: +- label : see Documentation/devicetree/bindings/leds/common.txt +- led-sources : see Documentation/devicetree/bindings/leds/common.txt + +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-us : see Documentation/devicetree/bindings/leds/common.txt + Range: 62500 - 1000000 + Example: +#include + max77693@66 { compatible = "maxim,max77693"; reg = <0x66>; @@ -73,4 +118,28 @@ Example: pwms = <&pwm 0 40000 0>; pwm-names = "haptic"; }; + + led { + compatible = "maxim,max77693-led"; + maxim,trigger-type = ; + maxim,boost-mode = ; + maxim,boost-vout = <5000>; + maxim,vsys-min = <2400>; + + camera1_flash: led1 { + label = "max77693-flash1"; + led-sources = <1 0>; + max-microamp = <250000>; + flash-max-microamp = <625000>; + flash-timeout-us = <1000000>; + }; + + camera2_flash: led2 { + label = "max77693-flash2"; + led-sources = <0 1>; + max-microamp = <250000>; + flash-max-microamp = <625000>; + flash-timeout-us = <1000000>; + }; + }; }; -- 1.7.9.5