Device Tree • GPIO question

Code:

fragment@3 {target = <&gpio>;__overlay__ {wpc_racecam_pins: wpc_racecam_pins {brcm,pins =      <12 13>;brcm,function =  <0  1>; /* in on 12 and out on 13*/brcm,pull =      <2  0>; /* pull up on 12 and none on 13*/};};};    fragment@4 {target-path = "/";__overlay__ {wpc_racecam: wpc_racecam {compatible = "wpc_racecam";status = "okay"; pinctrl-names = "default"; pinctrl-0 = <&wpc_racecam_pins>; switch-gpios = <&gpio 12 1>;status-led-gpios = <&gpio 13 0>;};};};