1RT5663 audio CODEC 2 3This device supports I2C only. 4 5Required 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 17Optional 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 maximun, 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 43Pins on the device (for linking into audio routes) for RT5663: 44 45 * IN1P 46 * IN1N 47 * IN2P 48 * IN2N 49 * HPOL 50 * HPOR 51 52Example: 53 54rt5663: 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}; 61