1 LEDs connected to tca6507
4 - compatible : should be : "ti,tca6507".
5 - #address-cells: must be 1
6 - #size-cells: must be 0
10 - gpio-controller: allows lines to be used as output-only GPIOs.
11 - #gpio-cells: if present, must not be 0.
13 Each led is represented as a sub-node of the ti,tca6507 device.
15 LED sub-node properties:
16 - label : (optional) see Documentation/devicetree/bindings/leds/common.txt
17 - reg : number of LED line (could be from 0 to 6)
18 - linux,default-trigger : (optional)
19 see Documentation/devicetree/bindings/leds/common.txt
20 - compatible: either "led" (the default) or "gpio".
25 compatible = "ti,tca6507";
41 linux,default-trigger = "default-on";