From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: [PATCHv3] DT: leds: Add flash LED devices related properties (fwd) (fwd) Date: Mon, 22 Dec 2014 23:27:29 +0100 Message-ID: <20141222222729.GA19981@amd> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-doc-owner@vger.kernel.org To: j.anaszewski@samsung.com, sakari.ailus@iki.fi, devicetree@vger.kernel.org, linux-leds@vger.kernel.org, linux-doc@vger.kernel.org, cooloney@gmail.com, rpurdie@rpsys.net, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, rob@landley.net List-Id: devicetree@vger.kernel.org Addition of a LED Flash class extension entails the need for flash LED specific device tree properties. The properties being added are: max-microamp, flash-max-microamp, flash-timeout-microsec. Signed-off-by: Pavel Machek Acked-by: Sakari Ailus Acked-by: Jacek Anaszewski Acked-by: Rob Herring --- This will allow me to add device tree support for adp1653 i2c flash LED driver, and allow Jacek Anaszewski to add support for more LED drivers.. Rob Herring requested to change microsec to us. Yes, microamp vs. us does look inconsistent, but that's what other subsystems do, and what Rob asked. diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt index 2d88816..e9acbbc 100644 --- a/Documentation/devicetree/bindings/leds/common.txt +++ b/Documentation/devicetree/bindings/leds/common.txt @@ -14,6 +14,15 @@ Optional properties for child nodes: "ide-disk" - LED indicates disk activity "timer" - LED flashes at a fixed, configurable rate +- max-microamp : maximum intensity in microamperes of the LED + (torch LED for flash devices) +- flash-max-microamp : maximum intensity in microamperes of the + flash LED; it is mandatory if the LED should + support the flash mode +- flash-timeout-us : timeout in microseconds after which the flash + LED is turned off + + Examples: system-status { @@ -21,3 +30,10 @@ system-status { linux,default-trigger = "heartbeat"; ... }; + +camera-flash { + label = "Flash"; + max-microamp = <50000>; + flash-max-microamp = <320000>; + flash-timeout-us = <500000>; +} -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html