56 lines
1.7 KiB
Plaintext
56 lines
1.7 KiB
Plaintext
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Nuvoton NAU88L21 audio codec
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This device supports I2C only.
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Required properties:
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- compatible : Must be "nuvoton,nau8821"
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- reg : the I2C address of the device. This is either 0x1B (CSB=0) or 0x54 (CSB=1).
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Optional properties:
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- nuvoton,jkdet-enable: Enable jack detection via JKDET pin.
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- nuvoton,jkdet-pull-enable: Enable JKDET pin pull. If set - pin pull enabled,
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otherwise pin in high impedance state.
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- nuvoton,jkdet-pull-up: Pull-up JKDET pin. If set then JKDET pin is pull up, otherwise pull down.
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- nuvoton,jkdet-polarity: JKDET pin polarity. 0 - active high, 1 - active low.
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- nuvoton,vref-impedance: VREF Impedance selection
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0 - Open
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1 - 25 kOhm
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2 - 125 kOhm
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3 - 2.5 kOhm
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- nuvoton,micbias-voltage: Micbias voltage level.
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0 - VDDA
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1 - VDDA
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2 - VDDA * 1.1
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3 - VDDA * 1.2
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4 - VDDA * 1.3
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5 - VDDA * 1.4
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6 - VDDA * 1.53
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7 - VDDA * 1.53
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- nuvoton,jack-insert-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
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- nuvoton,jack-eject-debounce: number from 0 to 7 that sets debounce time to 2^(n+2) ms
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- nuvoton,dmic-clk-threshold: the ADC threshold of DMIC clock.
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- nuvoton,key_enable: Headset button detection switch.
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Example:
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headset: nau8821@1b {
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compatible = "nuvoton,nau8821";
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reg = <0x1b>;
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interrupt-parent = <&gpio>;
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interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
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nuvoton,jkdet-enable;
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nuvoton,jkdet-pull-enable;
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nuvoton,jkdet-pull-up;
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nuvoton,jkdet-polarity = <GPIO_ACTIVE_LOW>;
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nuvoton,vref-impedance = <2>;
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nuvoton,micbias-voltage = <6>;
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nuvoton,jack-insert-debounce = <7>;
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nuvoton,jack-eject-debounce = <7>;
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nuvoton,dmic-clk-threshold = 3072000;
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};
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