Unverified Commit aab1ad11 authored by Seven Lee's avatar Seven Lee Committed by Mark Brown
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ASoC: nau8821: new driver 



The driver is for codec NAU88L21 of Nuvoton Technology Corporation.
The NAU88L21 is an ultra-low power high performance audio codec that
supports both analog and digital audio functions.

Signed-off-by: default avatarSeven Lee <wtli@nuvoton.com>
Link: https://lore.kernel.org/r/20211001103108.3297848-1-wtli@nuvoton.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 27547a39

Documentation/devicetree/bindings/sound/nau8821.txt

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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;

  };

sound/soc/codecs/Kconfig

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@@ -138,6 +138,7 @@ config SND_SOC_ALL_CODECS 
	imply SND_SOC_NAU8315

	imply SND_SOC_NAU8540

	imply SND_SOC_NAU8810

	imply SND_SOC_NAU8821

	imply SND_SOC_NAU8822

	imply SND_SOC_NAU8824

	imply SND_SOC_NAU8825
@@ -1922,6 +1923,10 @@ config SND_SOC_NAU8810 
	tristate "Nuvoton Technology Corporation NAU88C10 CODEC"

	depends on I2C



config SND_SOC_NAU8821

	tristate "Nuvoton Technology Corporation NAU88L21 CODEC"

	depends on I2C



config SND_SOC_NAU8822

	tristate "Nuvoton Technology Corporation NAU88C22 CODEC"

	depends on I2C

sound/soc/codecs/Makefile

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@@ -143,6 +143,7 @@ snd-soc-mt6660-objs := mt6660.o 
snd-soc-nau8315-objs := nau8315.o

snd-soc-nau8540-objs := nau8540.o

snd-soc-nau8810-objs := nau8810.o

snd-soc-nau8821-objs := nau8821.o

snd-soc-nau8822-objs := nau8822.o

snd-soc-nau8824-objs := nau8824.o

snd-soc-nau8825-objs := nau8825.o
@@ -473,6 +474,7 @@ obj-$(CONFIG_SND_SOC_MT6660) += snd-soc-mt6660.o 
obj-$(CONFIG_SND_SOC_NAU8315)   += snd-soc-nau8315.o

obj-$(CONFIG_SND_SOC_NAU8540)   += snd-soc-nau8540.o

obj-$(CONFIG_SND_SOC_NAU8810)   += snd-soc-nau8810.o

obj-$(CONFIG_SND_SOC_NAU8821)   += snd-soc-nau8821.o

obj-$(CONFIG_SND_SOC_NAU8822)   += snd-soc-nau8822.o

obj-$(CONFIG_SND_SOC_NAU8824)   += snd-soc-nau8824.o

obj-$(CONFIG_SND_SOC_NAU8825)   += snd-soc-nau8825.o

sound/soc/codecs/nau8821.c

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sound/soc/codecs/nau8821.h

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