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RT5640/RT5639 audio CODEC
This device supports I2C only.
Required properties:
- compatible : One of "realtek,rt5640" or "realtek,rt5639".
- reg : The I2C address of the device.
- interrupts : The CODEC's interrupt output.
Optional properties:
- clocks: The phandle of the master clock to the CODEC
- clock-names: Should be "mclk"
- realtek,in1-differential
- realtek,in2-differential
- realtek,in3-differential
Boolean. Indicate MIC1/2/3 input are differential, rather than single-ended.
- realtek,lout-differential
Boolean. Indicate LOUT output is differential, rather than stereo.
- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
- realtek,dmic1-data-pin
0: dmic1 is not used
1: using IN1P pin as dmic1 data pin
2: using GPIO3 pin as dmic1 data pin
- realtek,dmic2-data-pin
0: dmic2 is not used
1: using IN1N pin as dmic2 data pin
2: using GPIO4 pin as dmic2 data pin
- realtek,jack-detect-source
u32. Valid values:
0: jack-detect is not used
1: Use GPIO1 for jack-detect
2: Use JD1_IN4P for jack-detect
3: Use JD2_IN4N for jack-detect
4: Use GPIO2 for jack-detect
5: Use GPIO3 for jack-detect
6: Use GPIO4 for jack-detect
- realtek,jack-detect-not-inverted
bool. Normal jack-detect switches give an inverted signal, set this bool
in the rare case you've a jack-detect switch which is not inverted.
- realtek,over-current-threshold-microamp
u32, micbias over-current detection threshold in µA, valid values are
600, 1500 and 2000µA.
- realtek,over-current-scale-factor
u32, micbias over-current detection scale-factor, valid values are:
0: Scale current by 0.5
1: Scale current by 0.75
2: Scale current by 1.0
3: Scale current by 1.5
Pins on the device (for linking into audio routes) for RT5639/RT5640:
* DMIC1
* DMIC2
* MICBIAS1
* IN1P
* IN1N
* IN2P
* IN2N
* IN3P
* IN3N
* HPOL
* HPOR
* LOUTL
* LOUTR
* SPOLP
* SPOLN
* SPORP
* SPORN
Additional pins on the device for RT5640:
* MONOP
* MONON
Example:
rt5640 {
compatible = "realtek,rt5640";
reg = <0x1c>;
interrupt-parent = <&gpio>;
interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_HIGH>;
realtek,ldo1-en-gpios =
<&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
};
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