From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jacek Anaszewski Subject: [PATCH v3] DT: Add documentation for the mfd Maxim max77693 Date: Mon, 30 Mar 2015 11:52:28 +0200 Message-ID: <1427709149-15014-2-git-send-email-j.anaszewski@samsung.com> References: <1427709149-15014-1-git-send-email-j.anaszewski@samsung.com> Return-path: Received: from mailout2.samsung.com ([203.254.224.25]:42245 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752490AbbC3Jwz (ORCPT ); Mon, 30 Mar 2015 05:52:55 -0400 In-reply-to: <1427709149-15014-1-git-send-email-j.anaszewski@samsung.com> Sender: linux-leds-owner@vger.kernel.org List-Id: linux-leds@vger.kernel.org To: linux-leds@vger.kernel.org, linux-media@vger.kernel.org Cc: kyungmin.park@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 , devicetree@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 Acked-by: Sakari Ailus Cc: Lee Jones Cc: Chanwoo Choi Cc: Bryan Wu Cc: Richard Purdie Cc: devicetree@vger.kernel.org --- Documentation/devicetree/bindings/mfd/max77693.txt | 63 ++++++++++++++++++++ 1 file changed, 63 insertions(+) - added range to maxim,boost-mvout and maxim,mvsys-min description diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt index 38e6440..3d2103a 100644 --- a/Documentation/devicetree/bindings/mfd/max77693.txt +++ b/Documentation/devicetree/bindings/mfd/max77693.txt @@ -76,7 +76,55 @@ Optional properties: Valid values: 4300000, 4700000, 4800000, 4900000 Default: 4300000 +- 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: + LEDS_TRIG_TYPE_EDGE (0) - Rising edge of the signal triggers + the flash, + LEDS_TRIG_TYPE_LEVEL (1) - 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 + LEDS_BOOST_FIXED in case both current sources are used. + Possible values: + LEDS_BOOST_OFF (0) - no boost, + LEDS_BOOST_ADAPTIVE (1) - adaptive mode, + LEDS_BOOST_FIXED (2) - fixed mode. +- maxim,boost-mvout : Output voltage of the boost module in millivolts. + Range: 3300 - 5500 +- maxim,mvsys-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. + Range: 2400 - 3400 + +Required properties of the LED child node: +- led-sources : see Documentation/devicetree/bindings/leds/common.txt; + device current output identifiers: 0 - FLED1, 1 - FLED2 + +Optional properties of the LED child node: +- label : see Documentation/devicetree/bindings/leds/common.txt +- 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>; @@ -117,5 +165,20 @@ Example: maxim,thermal-regulation-celsius = <75>; maxim,battery-overcurrent-microamp = <3000000>; maxim,charge-input-threshold-microvolt = <4300000>; + + led { + compatible = "maxim,max77693-led"; + maxim,trigger-type = ; + maxim,boost-mode = ; + maxim,boost-mvout = <5000>; + maxim,mvsys-min = <2400>; + + camera_flash: flash-led { + label = "max77693-flash"; + led-sources = <0>, <1>; + max-microamp = <500000>; + flash-max-microamp = <1250000>; + flash-timeout-us = <1000000>; + }; }; }; -- 1.7.9.5