| 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>; |
| }; |
