3 This device supports I2C only.
7 - compatible : "realtek,rt5663".
9 - reg : The I2C address of the device.
11 - interrupts : The CODEC's interrupt output.
15 - "realtek,dc_offset_l_manual"
16 - "realtek,dc_offset_r_manual"
17 - "realtek,dc_offset_l_manual_mic"
18 - "realtek,dc_offset_r_manual_mic"
19 Based on the different PCB layout, add the manual offset value to
20 compensate the DC offset for each L and R channel, and they are different
21 between headphone and headset.
22 - "realtek,impedance_sensing_num"
23 The matrix row number of the impedance sensing table.
24 If the value is 0, it means the impedance sensing is not supported.
25 - "realtek,impedance_sensing_table"
26 The matrix rows of the impedance sensing table are consisted by impedance
27 minimum, impedance maximun, volume, DC offset w/o and w/ mic of each L and
28 R channel accordingly. Example is shown as following.
29 < 0 300 7 0xffd160 0xffd1c0 0xff8a10 0xff8ab0
30 301 65535 4 0xffe470 0xffe470 0xffb8e0 0xffb8e0>
31 The first and second column are defined for the impedance range. If the
32 detected impedance value is in the range, then the volume value of the
33 third column will be set to codec. In our codec design, each volume value
34 should compensate different DC offset to avoid the pop sound, and it is
35 also different between headphone and headset. In the example, the
36 "realtek,impedance_sensing_num" is 2. It means that there are 2 ranges of
37 impedance in the impedance sensing function.
39 Pins on the device (for linking into audio routes) for RT5663:
51 compatible = "realtek,rt5663";
53 interrupts = <7 IRQ_TYPE_EDGE_FALLING>;