Where are groups like ledgrp and keygrp defined in device tree?

[Majid]

I have been studying device tree for some time. I can not find the definition of ledgrp or keygrp in existing files. Where can I find them? I'm using imx6ull and it's .dts files.

[weidong_sun]

Hi Majid,

    There are many examples in linux-imx/arch/arm/boot/dts, for example.

# cd linux-imx/arch/arm/boot/dts

# grep -r -n 'gpio-keys' ./

...

./imx6qdl-nitrogen6_max.dtsi:97: gpio-keys {
./imx6qdl-nitrogen6_max.dtsi:98: compatible = "gpio-keys";
./imx6qdl-nitrogen6_max.dtsi:472: pinctrl_gpio_keys: gpio-keysgrp {

...

# grep -r -n 'gpio-leds' ./

...

./imx6qdl-ts4900.dtsi:53: compatible = "gpio-leds";

...

You can refer to these dts file as your study purpose.

Hope this information is helpful to you.

Have a nice day!

B.R,

Weidong

[Majid]

Hi Weidong

Thank you for your reply.

I want to know if they defined some where, where is it? I didn't see they defined in .dts or .dtsi files or couldn't find them. also I looking for source codes too but I didn't find any thing. so where they come?

-Majid

-Regards