3 This device supports I2C only.
7 - compatible : "realtek,rt274".
9 - reg : The I2C address of the device.
13 - interrupts : The CODEC's interrupt output.
16 Pins on the device (for linking into audio routes) for RT274:
30 compatible = "realtek,rt274";
32 interrupts = <7 IRQ_TYPE_EDGE_FALLING>;