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[PATCH/RFC,v4,20/20] DT: Add documentation for the Skyworks AAT1290

Message ID 1404921824-22781-22-git-send-email-j.anaszewski@samsung.com
State Superseded, archived
Headers show

Commit Message

Jacek Anaszewski July 9, 2014, 4:03 p.m. UTC 
This patch adds device tree binding documentation for
1.5A Step-Up Current Regulator for Flash LEDs.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
---
 .../devicetree/bindings/leds/leds-aat1290.txt      |   22 ++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/leds-aat1290.txt
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Patch

diff --git a/Documentation/devicetree/bindings/leds/leds-aat1290.txt b/Documentation/devicetree/bindings/leds/leds-aat1290.txt
new file mode 100644
index 0000000..05acb01
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-aat1290.txt
@@ -0,0 +1,22 @@ 
+* Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs
+
+Required properties:
+
+- compatible : should be "skyworks,aat1290"
+- gpios: three gpio pins - the first two control FLEN and EN/SET device pins
+         and the third one is used for switching the state of a third-party
+         multiplexer used for re-routing the FLEN and EN/SET pins to the
+         signals outgoing from a camera sensor device.
+- skyworks,flash-timeout - maximum flash timeout - it can be calculated
+         using following formula: T = 8.82s/uF * Ct
+- skyworks,flash-iout - maximum flash current - it can be calculated
+         using following formula: I = 1A * 162 kohm / Rset
+
+Example:
+
+flash_led: flash-led {
+	compatible = "skyworks,aat1290";
+	gpios = <&gpj1 1 0>, <&gpj1 2 0>, <&gpj1 0 0>;
+	skyworks,flash-timeout = <1940>;
+	skyworks,flash-iout = <1000>;
+}