| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 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 | }; |