dt-bindings: Add vendor prefix and docs for CR0014114

Add vendor prefix for Crane.
Add documentation and example for dt-bindings CR0014114.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/leds/leds-cr0014114.txt b/Documentation/devicetree/bindings/leds/leds-cr0014114.txt
new file mode 100644
index 000000000000..4255b19ad25c
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-cr0014114.txt
@@ -0,0 +1,54 @@
+Crane Merchandising System - cr0014114 LED driver
+-------------------------------------------------
+
+This LED Board is widely used in vending machines produced
+by Crane Merchandising Systems.
+
+Required properties:
+- compatible: "crane,cr0014114"
+
+Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
+apply. In particular, "reg" and "spi-max-frequency" properties must be given.
+
+LED sub-node properties:
+- label :
+	see Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger : (optional)
+	see Documentation/devicetree/bindings/leds/common.txt
+
+Example
+-------
+
+led-controller@0 {
+	compatible = "crane,cr0014114";
+	reg = <0>;
+	spi-max-frequency = <50000>;
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	led@0 {
+		reg = <0>;
+		label = "red:coin";
+	};
+	led@1 {
+		reg = <1>;
+		label = "green:coin";
+	};
+	led@2 {
+		reg = <2>;
+		label = "blue:coin";
+	};
+	led@3 {
+		reg = <3>;
+		label = "red:bill";
+	};
+	led@4 {
+		reg = <4>;
+		label = "green:bill";
+	};
+	led@5 {
+		reg = <5>;
+		label = "blue:bill";
+	};
+	...
+};