1 RT5663 audio CODEC
2
3 This device supports I2C only.
4
5 Required properties:
6
7 - compatible : "realtek,rt5663".
8
9 - reg : The I2C address of the device.
10
11 - interrupts : The CODEC's interrupt output.
12
13 - avdd-supply: Power supply for AVDD, providing 1.8V.
14
15 - cpvdd-supply: Power supply for CPVDD, providing 3.5V.
16
17 Optional properties:
18
19 - "realtek,dc_offset_l_manual"
20 - "realtek,dc_offset_r_manual"
21 - "realtek,dc_offset_l_manual_mic"
22 - "realtek,dc_offset_r_manual_mic"
23 Based on the different PCB layout, add the manual offset value to
24 compensate the DC offset for each L and R channel, and they are different
25 between headphone and headset.
26 - "realtek,impedance_sensing_num"
27 The matrix row number of the impedance sensing table.
28 If the value is 0, it means the impedance sensing is not supported.
29 - "realtek,impedance_sensing_table"
30 The matrix rows of the impedance sensing table are consisted by impedance
31 minimum, impedance maximum, volume, DC offset w/o and w/ mic of each L and
32 R channel accordingly. Example is shown as following.
33 < 0 300 7 0xffd160 0xffd1c0 0xff8a10 0xff8ab0
34 301 65535 4 0xffe470 0xffe470 0xffb8e0 0xffb8e0>
35 The first and second column are defined for the impedance range. If the
36 detected impedance value is in the range, then the volume value of the
37 third column will be set to codec. In our codec design, each volume value
38 should compensate different DC offset to avoid the pop sound, and it is
39 also different between headphone and headset. In the example, the
40 "realtek,impedance_sensing_num" is 2. It means that there are 2 ranges of
41 impedance in the impedance sensing function.
42
43 Pins on the device (for linking into audio routes) for RT5663:
44
45 * IN1P
46 * IN1N
47 * IN2P
48 * IN2N
49 * HPOL
50 * HPOR
51
52 Example:
53
54 rt5663: codec@12 {
55 compatible = "realtek,rt5663";
56 reg = <0x12>;
57 interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
58 avdd-supply = <&pp1800_a_alc5662>;
59 cpvdd-supply = <&pp3500_a_alc5662>;
60 };
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