tests/drivers/i2s/i2s_speed/boards/nucleo_f411re.overlay - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /* i2s-node0 is the transmitter/receiver */

 / {
 	aliases {
 		i2s-node0 = &i2s1;
 	};
 };
	/* i2s-node0 is the transmitter/receiver */

	/ {
	aliases {
	i2s-node0 = &i2s1;
	};
	};