55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
|
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.
|
||
|
|
|
||
|
|
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>;
|
||
|
|
};
|