samples/drivers/watchdog/boards/disco_l475_iot1.overlay - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 &rcc {
 	apb1-prescaler = <16>;
 };

 &wwdg {
 	status = "okay";
 };

 &iwdg {
 	status = "disabled";
 };
	&rcc {
	apb1-prescaler = <16>;
	};

	&wwdg {
	status = "okay";
	};

	&iwdg {
	status = "disabled";
	};