1 Crane Merchandising System - EL15203000 LED dr 1 Crane Merchandising System - EL15203000 LED driver
2 ---------------------------------------------- 2 --------------------------------------------------
3 3
4 This LED Board (aka RED LEDs board) is widely 4 This LED Board (aka RED LEDs board) is widely used in
5 coffee vending machines produced by Crane Merc 5 coffee vending machines produced by Crane Merchandising Systems.
6 The board manages 3 LEDs and supports predefin 6 The board manages 3 LEDs and supports predefined blinking patterns
7 for specific leds. 7 for specific leds.
8 8
9 Vending area LED encoded with symbol 'V' (hex 9 Vending area LED encoded with symbol 'V' (hex code 0x56).
10 Doesn't have any hardware blinking pattern. 10 Doesn't have any hardware blinking pattern.
11 11
12 Screen light tube LED which surrounds vending 12 Screen light tube LED which surrounds vending machine screen and
13 encoded with symbol 'S' (hex code 0x53). Suppo 13 encoded with symbol 'S' (hex code 0x53). Supports blinking breathing pattern.
14 14
15 Water Pipe LED encoded with symbol 'P' (hex co 15 Water Pipe LED encoded with symbol 'P' (hex code 0x50) and
16 actually consists of 5 LEDs that exposed by pr 16 actually consists of 5 LEDs that exposed by protocol like one LED.
17 Supports next patterns: 17 Supports next patterns:
18 - cascade pattern 18 - cascade pattern
19 - inversed cascade pattern 19 - inversed cascade pattern
20 - bounce pattern 20 - bounce pattern
21 - inversed bounce pattern 21 - inversed bounce pattern
22 22
23 Required properties: 23 Required properties:
24 - compatible : "crane,el15203000" 24 - compatible : "crane,el15203000"
25 - #address-cells : must be 1 25 - #address-cells : must be 1
26 - #size-cells : must be 0 26 - #size-cells : must be 0
27 27
28 Property rules described in Documentation/devi 28 Property rules described in Documentation/devicetree/bindings/spi/spi-bus.txt
29 apply. In particular, "reg" and "spi-max-frequ 29 apply. In particular, "reg" and "spi-max-frequency" properties must be given.
30 30
31 Optional LED sub-node properties: 31 Optional LED sub-node properties:
32 - function: 32 - function:
33 see Documentation/devicetree/bindings/ 33 see Documentation/devicetree/bindings/leds/common.txt
34 - color: 34 - color:
35 see Documentation/devicetree/bindings/ 35 see Documentation/devicetree/bindings/leds/common.txt
36 36
37 Example 37 Example
38 ------- 38 -------
39 39
40 #include <dt-bindings/leds/common.h> 40 #include <dt-bindings/leds/common.h>
41 41
42 led-controller@0 { 42 led-controller@0 {
43 compatible = "crane,el15203000"; 43 compatible = "crane,el15203000";
44 reg = <0>; 44 reg = <0>;
45 spi-max-frequency = <50000>; 45 spi-max-frequency = <50000>;
46 #address-cells = <1>; 46 #address-cells = <1>;
47 #size-cells = <0>; 47 #size-cells = <0>;
48 48
49 /* water pipe */ 49 /* water pipe */
50 led@50 { 50 led@50 {
51 reg = <0x50>; 51 reg = <0x50>;
52 function = "pipe"; 52 function = "pipe";
53 color = <LED_COLOR_ID_RED>; 53 color = <LED_COLOR_ID_RED>;
54 }; 54 };
55 55
56 /* screen frame */ 56 /* screen frame */
57 led@53 { 57 led@53 {
58 reg = <0x53>; 58 reg = <0x53>;
59 function = "screen"; 59 function = "screen";
60 color = <LED_COLOR_ID_RED>; 60 color = <LED_COLOR_ID_RED>;
61 }; 61 };
62 62
63 /* vending area */ 63 /* vending area */
64 led@56 { 64 led@56 {
65 reg = <0x56>; 65 reg = <0x56>;
66 function = "vend"; 66 function = "vend";
67 color = <LED_COLOR_ID_RED>; 67 color = <LED_COLOR_ID_RED>;
68 }; 68 };
69 }; 69 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.