[PATCH v3 1/2] dt-bindings: iio: dac: Add AD5529R
From: Janani Sunil
Date: Tue May 19 2026 - 12:15:31 EST
Devicetree bindings for AD5529R 16 channel 12/16 bit high voltage,
buffered voltage output digital-to-analog converter (DAC) with an
integrated precision reference.
Signed-off-by: Janani Sunil <janani.sunil@xxxxxxxxxx>
---
.../devicetree/bindings/iio/dac/adi,ad5529r.yaml | 217 +++++++++++++++++++++
MAINTAINERS | 7 +
2 files changed, 224 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad5529r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad5529r.yaml
new file mode 100644
index 000000000000..eb66f6ca063d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dac/adi,ad5529r.yaml
@@ -0,0 +1,217 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dac/adi,ad5529r.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD5529R 16-Channel 12/16-bit High Voltage DAC
+
+maintainers:
+ - Janani Sunil <janani.sunil@xxxxxxxxxx>
+
+description: |
+ The AD5529R is a 16-channel, 12-bit or 16-bit, high voltage, buffered voltage output
+ digital-to-analog converter (DAC) with an integrated precision reference.
+ The device operates from unipolar and bipolar supplies. It is guaranteed
+ monotonic and has built-in rail-to-rail output buffers that can source or
+ sink up to 25mA.
+
+ Specifications:
+ * 16 independent 12-bit or 16-bit DAC channels
+ * Independently programmable output ranges: 0V to 5V, 0V to 10V, 0V to 20V,
+ 0V to 40V, ±5V, ±10V, ±15V, and ±20V
+ * The device supports SPI communication with Mode 0 and Mode 3.
+ * 4.096V precision reference, 12ppm/°C maximum
+ * Built-in function generation: Toggle, Sinusoidal Dither, and Ramp waveforms
+ * Multiplexer for output voltage, load current sense and die temperature
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ad5529r.pdf
+
+properties:
+ compatible:
+ enum:
+ - adi,ad5529r-16 # 16-bit variant
+ - adi,ad5529r-12 # 12-bit variant
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 25000000
+ description:
+ Maximum SPI frequency. The device supports SPI Mode 0 and Mode 3.
+ Read operations are limited to 25MHz maximum.
+
+ reset-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the RESET pin. Active low. When asserted low,
+ performs a power-on reset and initializes the device to its default state.
+
+ clear-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the CLEAR pin. Active low. When asserted low,
+ clears all DAC data registers without affecting configuration settings.
+
+ interrupts:
+ maxItems: 1
+ description:
+ Interrupt connected to the ALARM pin. Active low interrupt output
+ for overtemperature conditions, SPI CRC errors, and function completion.
+
+ tg0-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the TG0 toggle pin. Pulsing this pin allows all
+ selected DACs to be updated synchronously for coordinated output changes.
+
+ tg1-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the TG1 toggle pin. Pulsing this pin allows all
+ selected DACs to be updated synchronously for coordinated output changes.
+
+ tg2-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the TG2 toggle pin. Pulsing this pin allows all
+ selected DACs to be updated synchronously for coordinated output changes.
+
+ tg3-gpios:
+ maxItems: 1
+ description:
+ GPIO connected to the TG3 toggle pin. Pulsing this pin allows all
+ selected DACs to be updated synchronously for coordinated output changes.
+
+ io-channels:
+ maxItems: 1
+ description:
+ ADC channel connected to the MUXOUT pin for monitoring output voltage,
+ load current sense, and die temperature.
+
+ io-channel-names:
+ const: muxout
+
+ vdd-supply:
+ description: Digital power supply (1.08V to 1.98V)
+
+ avdd-supply:
+ description: Analog power supply (4.75V to 5.25V)
+
+ hvdd-supply:
+ description:
+ High voltage positive supply (7V to 45V). Supply voltage should be chosen
+ based on configured output ranges (see datasheet Table 9).
+
+ hvss-supply:
+ description:
+ High voltage negative supply (-22.5V to 0V). Required only when using bipolar
+ output ranges (±5V, ±10V, ±15V, ±20V). Supply voltage should be
+ chosen based on configured output ranges (see datasheet Table 9).
+
+ vref-supply:
+ description:
+ External voltage reference supply (4.056V to 4.136V, typically 4.096V).
+ When specified, the device uses external reference mode and the VREF pin becomes an
+ input. The device uses the internal 4.096V precision reference otherwise.
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "^channel@([0-9]|1[0-5])$":
+ type: object
+ description: Child nodes for individual channel configuration
+
+ properties:
+ reg:
+ description: Channel number.
+ minimum: 0
+ maximum: 15
+
+ adi,output-range-microvolt:
+ description: |
+ Output voltage range for this channel as [min, max] in microvolts.
+ If not specified, defaults to 0V to 5V range.
+ oneOf:
+ - items:
+ - const: 0
+ - enum: [5000000, 10000000, 20000000, 40000000]
+ - items:
+ - const: -5000000
+ - const: 5000000
+ - items:
+ - const: -10000000
+ - const: 10000000
+ - items:
+ - const: -15000000
+ - const: 15000000
+ - items:
+ - const: -20000000
+ - const: 20000000
+
+ required:
+ - reg
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - vdd-supply
+ - avdd-supply
+ - hvdd-supply
+
+dependencies:
+ spi-cpha: [ spi-cpol ]
+ spi-cpol: [ spi-cpha ]
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dac@0 {
+ compatible = "adi,ad5529r-16";
+ reg = <0>;
+ spi-max-frequency = <25000000>;
+
+ vdd-supply = <&vdd_regulator>;
+ avdd-supply = <&avdd_regulator>;
+ hvdd-supply = <&hvdd_regulator>;
+ hvss-supply = <&hvss_regulator>;
+
+ reset-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ channel@0 {
+ reg = <0>;
+ adi,output-range-microvolt = <0 5000000>;
+ };
+
+ channel@1 {
+ reg = <1>;
+ adi,output-range-microvolt = <(-10000000) 10000000>;
+ };
+
+ channel@2 {
+ reg = <2>;
+ adi,output-range-microvolt = <0 40000000>;
+ };
+ };
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index d6c3c7d22403..320e84765ce6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1507,6 +1507,13 @@ W: https://ez.analog.com/linux-software-drivers
F: Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
F: drivers/iio/adc/ad4851.c
+ANALOG DEVICES INC AD5529R DRIVER
+M: Janani Sunil <janani.sunil@xxxxxxxxxx>
+L: linux-iio@xxxxxxxxxxxxxxx
+S: Supported
+W: https://ez.analog.com/linux-software-drivers
+F: Documentation/devicetree/bindings/iio/dac/adi,ad5529r.yaml
+
ANALOG DEVICES INC AD5706R DRIVER
M: Alexis Czezar Torreno <alexisczezar.torreno@xxxxxxxxxx>
L: linux-iio@xxxxxxxxxxxxxxx
--
2.43.0