[PATCH 0/3] iio: dac: Add support for AD5529R DAC

[Janani Sunil <janani.sunil@analog.com>]

This patch series adds support for Analog Devices AD5529R, a 16 channel
16 and 12 bit voltage Digital-to-Analog Converter (DAC) with integrated
precision reference. The AD5529R operates from both unipolar and
bipolar supplies. The device communicates via SPI interface.

**Device Overview:**
The AD5529R features 16 independent DAC channels, with 16 or 12 bit
resolution, allowing independently programmable output ranges. The
internal 4.096V precision reference sets the accuracy of the output
voltage.

**Features Implemented:**
- Automatic detection of 12/16 bit generic with product ID read.
- Reset support via GPIO.
- Dual regmap configuration to handle 8 and 16 bit registers.

**Patch Summary:**
1. **dt-bindings**: Binding documentation with channel configuration.
2. **driver**: Implement IIO DAC Driver with regmap support.
3. **documentation**: Add driver documentation with usage examples.

**Testing:**
The driver was compiled and tested on the EVAL-AD5529R-ARDZ using a
coraZ7 with a mainline v7.0 kernel.

Signed-off-by: Janani Sunil <janani.sunil@analog.com>
---
Janani Sunil (3):
      dt-bindings: iio: dac: Add AD5529R
      iio: dac: Add AD5529R DAC driver support
      Documentation: iio: Add AD5529R Documentation

 .../devicetree/bindings/iio/dac/adi,ad5529r.yaml   |  99 ++++
 Documentation/iio/ad5529r.rst                      | 214 ++++++++
 Documentation/iio/index.rst                        |   1 +
 MAINTAINERS                                        |   9 +
 drivers/iio/dac/Kconfig                            |  17 +
 drivers/iio/dac/Makefile                           |   1 +
 drivers/iio/dac/ad5529r.c                          | 564 +++++++++++++++++++++
 7 files changed, 905 insertions(+)
---
base-commit: 93df88612859e8e19dec93c69d563b4b73e9bd4b
change-id: 20260507-ad5529r-driver-866bbdd864de

Best regards,
-- 
Janani Sunil <janani.sunil@analog.com>