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