Add documentation and example for dt-bindings EL15203000.
LED board (aka RED LED board) from Crane Merchandising Systems.
Signed-off-by: Oleh Kravchenko <oleg@xxxxxxxxxx>
---
.../bindings/leds/leds-el15203000.txt | 53 +++++++++++++++++++
1 file changed, 53 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-el15203000.txt
diff --git a/Documentation/devicetree/bindings/leds/leds-el15203000.txt b/Documentation/devicetree/bindings/leds/leds-el15203000.txt
new file mode 100644
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+Crane Merchandising System - el15203000 LED driver
+--------------------------------------------------
+
+This LED Board (aka RED LEDs board) is widely used in coffee vending machines
+produced by Crane Merchandising Systems.
+
+Required properties:
+- compatible : "crane,el15203000"
+- reg :
+ see Documentation/devicetree/bindings/spi/spi-bus.txt
+- spi-max-frequency : (optional)
+ see Documentation/devicetree/bindings/spi/spi-bus.txt
+
+LED sub-node properties:
+- label :
+ see Documentation/devicetree/bindings/leds/common.txt
+- linux,default-trigger : (optional)
+ see Documentation/devicetree/bindings/leds/common.txt
+- max-brightness : (optional)
+ Specify here 2 if LED has special effect. Effects by LED type:
+ - Pipe has leaking
+ - Screen Frame has blinking
+
+Example
+-------
+
+led-controller@0 {
+ compatible = "crane,el15203000";
+ reg = <0>;
+ spi-max-frequency = <50000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* water pipe */
+ pipe@50 {
+ reg = <0x50>;
+ label = "red:pipe";
+ max-brightness = <2>;
+ };
+
+ /* screen frame */
+ screen@53 {
+ reg = <0x53>;
+ label = "red:screen";
+ max-brightness = <2>;
+ };
+
+ /* vending area */
+ vend@56 {
+ reg = <0x56>;
+ label = "red:vend";
+ };
+};
--
2.21.0
