On Wed, Mar 19, 2025 at 11:47:57AM +0800, Kim Seer Paller wrote: > The AD3530R/AD3530 is an 8-Channel, 16-Bit Voltage Output DAC, while the "Document the AD3530R/AD3530, an 8-Channel, 16-bit...." > AD3531R/AD3531 is a 4-Channel, 16-Bit Voltage Output DAC. These devices > include software-programmable gain controls that provide full-scale > output spans of 2.5V or 5V for reference voltages of 2.5V. They operate > from a single supply voltage range of 2.7V to 5.5V and are guaranteed to > be monotonic by design. Additionally, these devices features a 2.5V, > 5ppm/°C internal reference, which is disabled by default. > > This adds the documentation for ad3530r. And that sentence us really not needed. See submitting patches. > > Signed-off-by: Kim Seer Paller <kimseer.paller@xxxxxxxxxx> > --- > .../devicetree/bindings/iio/dac/adi,ad3530r.yaml | 89 ++++++++++++++++++++++ > MAINTAINERS | 1 + > 2 files changed, 90 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml b/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml > new file mode 100644 > index 0000000000000000000000000000000000000000..6b50dce38383c8eb0d2107bf4e44cd320776f481 > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/dac/adi,ad3530r.yaml > @@ -0,0 +1,89 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/iio/dac/adi,ad3530r.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Analog Devices AD3530R and Similar DACs > + > +maintainers: > + - Kim Seer Paller <kimseer.paller@xxxxxxxxxx> > + > +description: | > + The AD3530R/AD3530 are low power, 8-channel, 16-bit, buffered voltage output, > + DACs that include a 2.5V internal reference (disabled by default), and a gain > + bit field, resulting in a full-scale output span of 2.5V (gain = 1) or 5V > + (gain = 2) for a reference voltage of 2.5V. > + Datasheet can be found here: > + https://www.analog.com/media/en/technical-documentation/data-sheets/2664fa.pdf > + > +properties: > + compatible: > + enum: > + - adi,ad3530r > + - adi,ad3531r > + > + reg: > + maxItems: 1 > + > + spi-max-frequency: > + maximum: 50000000 > + > + vdd-supply: > + description: Power Supply Input. > + > + iovdd-supply: > + description: Digital Power Supply Input. > + > + ref-supply: > + description: > + Reference Input/Output. The voltage at the REF pin sets the full-scale > + range of all channels. If not provided the internal reference is used and > + also provided on the VREF pin. > + > + reset-gpios: > + description: > + Active low signal that is falling edge sensitive. When it is deasserted, > + the digital core initialization is performed and all DAC registers except > + the Interface Configuration A register are reset to their default values. > + maxItems: 1 > + > + ldac-gpios: > + description: > + LDAC pin to be used as a hardware trigger to update the DAC channels. If > + not present, the DAC channels are updated by Software LDAC. > + maxItems: 1 > + > + adi,double-output-range: > + description: > + Configure the output range for all channels. If the property is present, > + the output will range from 0V to 2Vref. If the property is not > + present, the output will range from 0V to Vref. You already have adi,range-double. It's not us who should find it, but you. You have just ADI bindings to look at. We have all bindings. Best regards, Krzysztof
