Hey,
I'm giving a try to Kernel 4.x on Lime2 and I have to deal with device tree instead of Fex file.
Does anybody managed to modify correctly LED and battery management ?
The documentation over Internet is really poor and I could not find a way of doing this simple thing, change the green heartbeat LED on PH2 to GPIO PH20...
led_pins@0 {
allwinner,pins = "PH2";
allwinner,function = "gpio_out";
allwinner,drive = <0x1>;
allwinner,pull = <0x0>;
linux,phandle = <0x35>;
phandle = <0x35>;
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <0x35>;
green {
label = "a20-olinuxino-lime2:green:usr";
gpios = <0x1a 0x7 0x2 0x0>;
default-state = "on";
};
It seems I have to do something with 0x1a 0x7 0x2 0x0 to tell that I want to use GPIO PH20, but I don't know how to translate this in hexa code
gpios = <0x1a 0x7 0x2 0x0>;
Any help would be great
Thank