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H. Nikolaus Schallere68015d2016-07-19 13:47:31 +02001LEDs connected to is31fl319x LED controller chip
2
3Required properties:
4- compatible : Should be any of
5 "issi,is31fl3190"
6 "issi,is31fl3191"
7 "issi,is31fl3193"
8 "issi,is31fl3196"
9 "issi,is31fl3199"
10 "si-en,sn3199".
11- #address-cells: Must be 1.
12- #size-cells: Must be 0.
13- reg: 0x64, 0x65, 0x66, or 0x67.
14
15Optional properties:
16- audio-gain-db : audio gain selection for external analog modulation input.
17 Valid values: 0 - 21, step by 3 (rounded down)
18 Default: 0
19
20Each led is represented as a sub-node of the issi,is31fl319x device.
21There can be less leds subnodes than the chip can support but not more.
22
23Required led sub-node properties:
24- reg : number of LED line
25 Valid values: 1 - number of leds supported by the chip variant.
26
27Optional led sub-node properties:
28- label : see Documentation/devicetree/bindings/leds/common.txt.
29- linux,default-trigger :
30 see Documentation/devicetree/bindings/leds/common.txt.
31- led-max-microamp : (optional)
32 Valid values: 5000 - 40000, step by 5000 (rounded down)
33 Default: 20000 (20 mA)
34 Note: a driver will take the lowest of all led limits since the
35 chip has a single global setting. The lowest value will be chosen
36 due to the PWM specificity, where lower brightness is achieved
37 by reducing the dury-cycle of pulses and not the current, which
38 will always have its peak value equal to led-max-microamp.
39
40Examples:
41
42fancy_leds: leds@65 {
43 compatible = "issi,is31fl3196";
44 #address-cells = <1>;
45 #size-cells = <0>;
46 reg = <0x65>;
47
48 red_aux: led@1 {
49 label = "red:aux";
50 reg = <1>;
51 led-max-microamp = <10000>;
52 };
53
54 green_power: led@5 {
55 label = "green:power";
56 reg = <5>;
57 linux,default-trigger = "default-on";
58 };
59};