From: Oleh Kravchenko <oleg@kaa.org.ua>
To: devicetree@vger.kernel.org, linux-leds@vger.kernel.org,
jacek.anaszewski@gmail.com, pavel@ucw.cz, dmurphy@ti.com
Cc: Oleh Kravchenko <oleg@kaa.org.ua>
Subject: [PATCH v11 1/2] dt-bindings: Add docs for EL15203000
Date: Thu, 19 Sep 2019 15:53:12 +0300 [thread overview]
Message-ID: <20190919125313.24081-2-oleg@kaa.org.ua> (raw)
In-Reply-To: <20190919125313.24081-1-oleg@kaa.org.ua>
Add documentation and example for dt-bindings EL15203000.
LED board (aka RED LED board) from Crane Merchandising Systems.
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
---
.../bindings/leds/leds-el15203000.txt | 69 +++++++++++++++++++
1 file changed, 69 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
index 000000000000..1bcd341967f8
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-el15203000.txt
@@ -0,0 +1,69 @@
+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.
+The board manages 3 LEDs and supports predefined blinking patterns
+for specific leds.
+
+Vending area LED encoded with symbol 'V' (hex code 0x56).
+Doesn't have any hardware blinking pattern.
+
+Screen light tube LED which surrounds vending machine screen and
+encoded with symbol 'S' (hex code 0x53). Supports blinking breathing pattern.
+
+Water Pipe LED encoded with symbol 'P' (hex code 0x50) and
+actually consists from 5 LEDs that exposed by protocol like one LED.
+Supports next patterns:
+- cascade pattern
+- inversed cascade pattern
+- bounce pattern
+- inversed bounce pattern
+
+Required properties:
+- compatible : "crane,el15203000"
+- #address-cells : must be 1
+- #size-cells : must be 0
+
+Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
+apply. In particular, "reg" and "spi-max-frequency" properties must be given.
+
+Optional LED sub-node properties:
+- function:
+ see Documentation/devicetree/bindings/leds/common.txt
+- color:
+ see Documentation/devicetree/bindings/leds/common.txt
+
+Example
+-------
+
+#include <dt-bindings/leds/common.h>
+
+led-controller@0 {
+ compatible = "crane,el15203000";
+ reg = <0>;
+ spi-max-frequency = <50000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ /* water pipe */
+ led@50 {
+ reg = <0x50>;
+ function = "pipe";
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ /* screen frame */
+ led@53 {
+ reg = <0x53>;
+ function = "screen";
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ /* vending area */
+ led@56 {
+ reg = <0x56>;
+ function = "vend";
+ color = <LED_COLOR_ID_RED>;
+ };
+};
--
2.21.0
next prev parent reply other threads:[~2019-09-19 12:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-19 12:53 v11 EL15203000 Oleh Kravchenko
2019-09-19 12:53 ` Oleh Kravchenko [this message]
2019-09-19 13:49 ` [PATCH v11 1/2] dt-bindings: Add docs for EL15203000 Dan Murphy
2019-09-19 19:49 ` Jacek Anaszewski
2019-09-19 20:04 ` Oleh Kravchenko
2019-09-19 12:53 ` [PATCH v11 2/2] leds: add LED driver for EL15203000 board Oleh Kravchenko
2019-09-19 20:10 ` Jacek Anaszewski
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