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authorDaniel Mack <daniel@zonque.org>2018-06-27 20:52:33 +0200
committerJacek Anaszewski <jacek.anaszewski@gmail.com>2018-07-03 22:12:22 +0200
commitf041f96abcf8718540e94aac6e73604c5d33d9f9 (patch)
tree94ddaaaa6c7a93bb47cfc7adb6bfd4f1145633f1
parent30f3b42147ba6f29bc95c1bba34468740762d91b (diff)
dt-bindings: leds: Add bindings for lltc,lt3593
This patch adds the bindings document for LT3593 LED drivers. The binding is kept consistent with other LED driver bindings in that it stores all the LED-specific properties in its own subnode. As the hardware only supports one channel, there can consequently only be one sub-node. Signed-off-by: Daniel Mack <daniel@zonque.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
-rw-r--r--Documentation/devicetree/bindings/leds/leds-lt3593.txt32
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-lt3593.txt b/Documentation/devicetree/bindings/leds/leds-lt3593.txt
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+++ b/Documentation/devicetree/bindings/leds/leds-lt3593.txt
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+Bindings for Linear Technologies LT3593 LED controller
+
+Required properties:
+- compatible: Should be "lltc,lt3593".
+- lltc,ctrl-gpios: A handle to the GPIO that is connected to the 'CTRL'
+ pin of the chip.
+
+The hardware supports only one LED. The properties of this LED are
+configured in a sub-node in the device node.
+
+Optional sub-node properties:
+- label: A label for the LED. If none is given, the LED will be
+ named "lt3595::".
+- linux,default-trigger: The default trigger for the LED.
+ See Documentation/devicetree/bindings/leds/common.txt
+- default-state: The initial state of the LED.
+ See Documentation/devicetree/bindings/leds/common.txt
+
+If multiple chips of this type are found in a design, each one needs to
+be handled by its own device node.
+
+Example:
+
+led-controller {
+ compatible = "lltc,lt3593";
+ lltc,ctrl-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+
+ led {
+ label = "white:backlight";
+ default-state = "on";
+ };
+};