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dt-bindings: iio: dac: Add adi,ad3530r.yaml
Document the AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) low-power, 16-bit, buffered voltage output DACs with software- programmable gain controls. They provide full-scale output spans of 2.5V or 5V for reference voltages of 2.5V. These devices operate on a single 2.7V to 5.5V supply and are guaranteed to be monotonic by design. The "R" variants include a 2.5V, 5ppm/°C internal reference, which is disabled by default. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: David Lechner <dlechner@baylibre.com> Signed-off-by: Kim Seer Paller <kimseer.paller@analog.com> Link: https://patch.msgid.link/20250429-togreg-v7-2-0af9c543b545@analog.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Kim Seer Paller
Jonathan Cameron
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Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml
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Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/dac/adi,ad3530r.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Analog Devices AD3530R and Similar DACs
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maintainers:
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- Kim Seer Paller <kimseer.paller@analog.com>
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description: |
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The AD3530/AD3530R (8-channel) and AD3531/AD3531R (4-channel) are low-power,
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16-bit, buffered voltage output digital-to-analog converters (DACs) with
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software-programmable gain controls, providing full-scale output spans of 2.5V
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or 5V for reference voltages of 2.5V. These devices operate from a single 2.7V
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to 5.5V supply and are guaranteed monotonic by design. The "R" variants
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include a 2.5V, 5ppm/°C internal reference, which is disabled by default.
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Datasheet can be found here:
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad3530_ad530r.pdf
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https://www.analog.com/media/en/technical-documentation/data-sheets/ad3531-ad3531r.pdf
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properties:
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compatible:
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enum:
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- adi,ad3530
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- adi,ad3530r
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- adi,ad3531
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- adi,ad3531r
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reg:
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maxItems: 1
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spi-max-frequency:
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maximum: 50000000
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vdd-supply:
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description: Power Supply Input.
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iovdd-supply:
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description: Digital Power Supply Input.
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io-channels:
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description:
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ADC channel used to monitor internal die temperature, output voltages, and
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current of a selected channel via the MUXOUT pin.
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maxItems: 1
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ref-supply:
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description:
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Reference Input/Output. The voltage at the REF pin sets the full-scale
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range of all channels. If not provided the internal reference is used and
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also provided on the VREF pin.
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reset-gpios:
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description:
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Active low signal that is falling edge sensitive. When it is deasserted,
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the digital core initialization is performed and all DAC registers except
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the Interface Configuration A register are reset to their default values.
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maxItems: 1
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ldac-gpios:
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description:
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LDAC pin to be used as a hardware trigger to update the DAC channels. If
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not present, the DAC channels are updated by Software LDAC.
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maxItems: 1
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adi,range-double:
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description:
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Configure the output range for all channels. If the property is present,
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the output will range from 0V to 2Vref. If the property is not present,
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the output will range from 0V to Vref.
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type: boolean
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required:
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- compatible
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- reg
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- vdd-supply
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- iovdd-supply
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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unevaluatedProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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dac@0 {
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compatible = "adi,ad3530r";
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reg = <0>;
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spi-max-frequency = <1000000>;
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vdd-supply = <&vdd>;
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iovdd-supply = <&iovdd>;
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};
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};
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...
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@ -1300,6 +1300,13 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git
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F: drivers/net/amt.c
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ANALOG DEVICES INC AD3530R DRIVER
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M: Kim Seer Paller <kimseer.paller@analog.com>
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L: linux-iio@vger.kernel.org
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S: Supported
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W: https://ez.analog.com/linux-software-drivers
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F: Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml
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ANALOG DEVICES INC AD3552R DRIVER
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M: Nuno Sá <nuno.sa@analog.com>
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L: linux-iio@vger.kernel.org
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