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+RT5663 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : "realtek,rt5663".
+
+- reg : The I2C address of the device.
+
+- interrupts : The CODEC's interrupt output.
+
+- avdd-supply: Power supply for AVDD, providing 1.8V.
+
+- cpvdd-supply: Power supply for CPVDD, providing 3.5V.
+
+Optional properties:
+
+- "realtek,dc_offset_l_manual"
+- "realtek,dc_offset_r_manual"
+- "realtek,dc_offset_l_manual_mic"
+- "realtek,dc_offset_r_manual_mic"
+ Based on the different PCB layout, add the manual offset value to
+ compensate the DC offset for each L and R channel, and they are different
+ between headphone and headset.
+- "realtek,impedance_sensing_num"
+ The matrix row number of the impedance sensing table.
+ If the value is 0, it means the impedance sensing is not supported.
+- "realtek,impedance_sensing_table"
+ The matrix rows of the impedance sensing table are consisted by impedance
+ minimum, impedance maximun, volume, DC offset w/o and w/ mic of each L and
+ R channel accordingly. Example is shown as following.
+ < 0 300 7 0xffd160 0xffd1c0 0xff8a10 0xff8ab0
+ 301 65535 4 0xffe470 0xffe470 0xffb8e0 0xffb8e0>
+ The first and second column are defined for the impedance range. If the
+ detected impedance value is in the range, then the volume value of the
+ third column will be set to codec. In our codec design, each volume value
+ should compensate different DC offset to avoid the pop sound, and it is
+ also different between headphone and headset. In the example, the
+ "realtek,impedance_sensing_num" is 2. It means that there are 2 ranges of
+ impedance in the impedance sensing function.
+
+Pins on the device (for linking into audio routes) for RT5663:
+
+ * IN1P
+ * IN1N
+ * IN2P
+ * IN2N
+ * HPOL
+ * HPOR
+
+Example:
+
+rt5663: codec@12 {
+ compatible = "realtek,rt5663";
+ reg = <0x12>;
+ interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+ avdd-supply = <&pp1800_a_alc5662>;
+ cpvdd-supply = <&pp3500_a_alc5662>;
+};