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Philippe Reynes9d5fb9c2019-03-22 17:02:01 +01001LEDs connected to Broadcom BCM6858 controller
2
3This controller is present on BCM6858, BCM6328, BCM6362 and BCM63268.
4In these SoCs it's possible to control LEDs both as GPIOs or by hardware.
5
6Required properties:
7 - compatible : should be "brcm,bcm6858-leds".
8 - #address-cells : must be 1.
9 - #size-cells : must be 0.
10 - reg : BCM6858 LED controller address and size.
11
12Optional properties:
13 - brcm,serial-led-msb-first : Boolean, msb data come out first on serial data pin
14 Default : false
15 - brcm,serial-led-en-pol : Boolean, serial led polarity (true => active high)
16 Default : false
17 - brcm,serial-led-clk-pol : Boolean, serial clock polarity (true => active high)
18 Default : false
19 - brcm,serial-led-data-ppol : Boolean, serial data polarity (true => active high)
20 Default : false
21 - brcm,serial-shift-inv : Boolean, led test mode
22 Default : false
23
24Each LED is represented as a sub-node of the brcm,bcm6858-leds device.
25
26LED sub-node required properties:
27 - reg : LED pin number (only LEDs 0 to 32 are valid).
28
29LED sub-node optional properties:
30 - label : see Documentation/devicetree/bindings/leds/common.txt
31 - active-low : Boolean, makes LED active low.
32 Default : false
33
34Examples:
35BCM6328 with 2 GPIO LEDs
36 leds0: led-controller@ff800800 {
37 compatible = "brcm,bcm6858-leds";
38 #address-cells = <1>;
39 #size-cells = <0>;
40 reg = <0x0 0xff800800 0x0 0xe4>;
41
42 led@2 {
43 reg = <2>;
44 label = "green:inet";
45 };
46
47 led@5 {
48 reg = <5>;
49 label = "red:alarm";
50 };
51 };