samples/basic/blinky_pwm/boards/nrf9160dk_nrf9160.overlay

&pwm0 {
	status = "disabled";
};

&sw_pwm {
	status = "okay";
	channel-gpios = <&gpio0 2 PWM_POLARITY_INVERTED>;
};

&pwm_led0 {
	pwms = <&sw_pwm 0 PWM_MSEC(20) PWM_POLARITY_INVERTED>;
};