55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
RT5663 audio CODEC
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This device supports I2C only.
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Required properties:
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- compatible : "realtek,rt5663".
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- reg : The I2C address of the device.
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- interrupts : The CODEC's interrupt output.
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Optional properties:
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- "realtek,dc_offset_l_manual"
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- "realtek,dc_offset_r_manual"
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- "realtek,dc_offset_l_manual_mic"
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- "realtek,dc_offset_r_manual_mic"
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Based on the different PCB layout, add the manual offset value to
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compensate the DC offset for each L and R channel, and they are different
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between headphone and headset.
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- "realtek,impedance_sensing_num"
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The matrix row number of the impedance sensing table.
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If the value is 0, it means the impedance sensing is not supported.
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- "realtek,impedance_sensing_table"
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The matrix rows of the impedance sensing table are consisted by impedance
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minimum, impedance maximun, volume, DC offset w/o and w/ mic of each L and
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R channel accordingly. Example is shown as following.
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< 0 300 7 0xffd160 0xffd1c0 0xff8a10 0xff8ab0
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301 65535 4 0xffe470 0xffe470 0xffb8e0 0xffb8e0>
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The first and second column are defined for the impedance range. If the
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detected impedance value is in the range, then the volume value of the
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third column will be set to codec. In our codec design, each volume value
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should compensate different DC offset to avoid the pop sound, and it is
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also different between headphone and headset. In the example, the
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"realtek,impedance_sensing_num" is 2. It means that there are 2 ranges of
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impedance in the impedance sensing function.
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Pins on the device (for linking into audio routes) for RT5663:
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* IN1P
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* IN1N
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* IN2P
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* IN2N
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* HPOL
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* HPOR
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Example:
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codec: rt5663@12 {
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compatible = "realtek,rt5663";
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reg = <0x12>;
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interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
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};
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