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