[PATCH v2 0/2] ASoC: codecs: Add Nuvoton NAU83G60 audio codec driver

This patch series adds support for the Nuvoton NAU83G60 audio codec.

The NAU83G60 is a stereo Class-D amplifier with an integrated DSP and
I/V-sense capabilities. The driver supports I2C register access through
regmap, DAPM widgets and routes, TDM interface configuration, and DSP
firmware loading.

The series is structured as follows:
- Patch 1: Adds the YAML device tree bindings documentation.
- Patch 2: Adds the ASoC codec driver implementation.

Changes in v2:

[dt-bindings]
- Dropped the word "driver" from the description.
- Removed runtime/software configuration properties:
  nuvoton,low-latency, nuvoton,anc-enable, nuvoton,aec-enable,
  nuvoton,vbat-microvolt, and nuvoton,tdm-channel-length.
- Added missing "nuvoton,dac-cur-enable" property for static speaker
  impedance matching.
- Removed unnecessary '|' formatting from single-line descriptions.
- Fixed typo in firmware-name property.

[codec driver]
- Fixed nau8360_peq_coeff_put() to return 1 on value change.
- Refactored TDM slot routing to use ALSA kcontrols instead of
  custom masks in set_tdm_slot().
- Switched regmap cache type to REGCACHE_MAPLE.
- Dropped hardcoded DAC gain initialization to retain chip defaults.
- Used devm_snd_soc_register_component() for safe unregistration.
- Separated TDM TX/RX logic in shutdown() to safely support
  full-duplex operation.
- Refactored TDM enable/disable logic: moved RX enable from
  startup to hw_params,
  TX enable from startup to set_tdm_slot, and handled disable logic
  in shutdown.
- Moved software/runtime configurations from DT properties
  to ALSA kcontrols (e.g., DSP bypass, low latency).
- Corrected supported PDM data length from 24 to 32 bits per
  datasheet specifications.
- Updated firmware DT property parsing to use standard firmware-name.
- Removed redundant VBAT bounds check in nau8360_sawtooth_params()
  as it is already validated by the caller.
- Read VBAT level dynamically via register instead of relying on
  a DT property.
- Cleaned up magic numbers by introducing PEQ band enumerations.
- Set dsp_fws_num to 0 to use default firmware paths if
  "firmware-name" is missing.

Neo Chang (2):
  ASoC: dt-bindings: nuvoton,nau8360: Add NAU83G60
  ASoC: codecs: nau8360: Add support for NAU83G60 amplifier

 .../bindings/sound/nuvoton,nau8360.yaml       |   86 +
 sound/soc/codecs/nau8360-dsp.c                |  704 +++++
 sound/soc/codecs/nau8360-dsp.h                |  117 +
 sound/soc/codecs/nau8360.c                    | 2334 +++++++++++++++++
 sound/soc/codecs/nau8360.h                    |  904 +++++++
 5 files changed, 4145 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/nuvoton,nau8360.yaml
 create mode 100644 sound/soc/codecs/nau8360-dsp.c
 create mode 100644 sound/soc/codecs/nau8360-dsp.h
 create mode 100644 sound/soc/codecs/nau8360.c
 create mode 100644 sound/soc/codecs/nau8360.h

-- 
2.25.1