[PATCH v3 0/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[PATCH v3 0/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Hungyu Lin]

This series adds devicetree binding documentation for the
Analog Devices AD9832 and AD9835 DDS devices.

v3:
  - Require spi-cpol in binding and example
  - Use generic node name (dds@0) in example

v2:
  - Add SPI peripheral schema reference
  - Fix example by adding clock and regulator providers
  - Fix SPDX license format

Hungyu Lin (1):
  dt-bindings: iio: dds: Add AD9832/AD9835 binding

 .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml

-- 
2.34.1

[PATCH v3 1/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Hungyu Lin]

Add devicetree binding documentation for AD9832 and AD9835 DDS devices.

These devices are SPI-controlled direct digital synthesizers
requiring AVDD, DVDD supplies and an external master clock.

Require spi-cpol since AD9832/AD9835 use SPI mode 2.
Update the example to include spi-cpol and use a generic node name.

Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
---
 .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml

diff --git a/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
new file mode 100644
index 000000000000..9f3e41cb0a0d
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/dds/adi,ad9832.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD9832 / AD9835 DDS
+
+maintainers:
+  - Hungyu Lin <dennylin0707@gmail.com>
+
+description: |
+  Binding for Analog Devices AD9832 and AD9835 SPI-controlled direct
+  digital synthesizers (DDS). The devices use an external master clock
+  and are controlled over a serial SPI-compatible interface.
+
+properties:
+  compatible:
+    enum:
+      - adi,ad9832
+      - adi,ad9835
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 20000000
+
+  spi-cpol: true
+
+  clocks:
+    maxItems: 1
+    description:
+      External master clock input.
+
+  clock-names:
+    const: mclk
+
+  avdd-supply:
+    description:
+      Analog power supply.
+
+  dvdd-supply:
+    description:
+      Digital power supply.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - avdd-supply
+  - dvdd-supply
+  - spi-cpol
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    mclk: clock {
+      compatible = "fixed-clock";
+      #clock-cells = <0>;
+      clock-frequency = <25000000>;
+    };
+
+    vdd_3v3: regulator {
+      compatible = "regulator-fixed";
+      regulator-name = "vdd_3v3";
+      regulator-min-microvolt = <3300000>;
+      regulator-max-microvolt = <3300000>;
+      regulator-always-on;
+    };
+
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      dds@0 {
+        compatible = "adi,ad9832";
+        reg = <0>;
+        spi-max-frequency = <20000000>;
+        spi-cpol;
+        clocks = <&mclk>;
+        clock-names = "mclk";
+        avdd-supply = <&vdd_3v3>;
+        dvdd-supply = <&vdd_3v3>;
+      };
+    };
-- 
2.34.1

Re: [PATCH v3 1/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Sanjay Chitroda]

On 9 May 2026 7:07:45 am IST, Hungyu Lin <dennylin0707@gmail.com> wrote:
>Add devicetree binding documentation for AD9832 and AD9835 DDS devices.
>

Hi,

It looks like you have sent multiple patch versions within 24 hours.

I would suggest taking some additional time for development and validation before sending updates to the mailing list. It is also good to allow reviewers enough time to provide feedback, atleast a minimum of 24 hours.

Please be patient and wait for a few days, or ideally upto week, so reviewers have sufficient time to review the changes properly.

Thanks, Sanjay 

>These devices are SPI-controlled direct digital synthesizers
>requiring AVDD, DVDD supplies and an external master clock.
>
>Require spi-cpol since AD9832/AD9835 use SPI mode 2.
>Update the example to include spi-cpol and use a generic node name.
>
>Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
>---
> .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
> 1 file changed, 91 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
>
>diff --git a/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
>new file mode 100644
>index 000000000000..9f3e41cb0a0d
>--- /dev/null
>+++ b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
>@@ -0,0 +1,91 @@
>+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>+%YAML 1.2
>+---
>+$id: http://devicetree.org/schemas/iio/dds/adi,ad9832.yaml#
>+$schema: http://devicetree.org/meta-schemas/core.yaml#
>+
>+title: Analog Devices AD9832 / AD9835 DDS
>+
>+maintainers:
>+  - Hungyu Lin <dennylin0707@gmail.com>
>+
>+description: |
>+  Binding for Analog Devices AD9832 and AD9835 SPI-controlled direct
>+  digital synthesizers (DDS). The devices use an external master clock
>+  and are controlled over a serial SPI-compatible interface.
>+
>+properties:
>+  compatible:
>+    enum:
>+      - adi,ad9832
>+      - adi,ad9835
>+
>+  reg:
>+    maxItems: 1
>+
>+  spi-max-frequency:
>+    maximum: 20000000
>+
>+  spi-cpol: true
>+
>+  clocks:
>+    maxItems: 1
>+    description:
>+      External master clock input.
>+
>+  clock-names:
>+    const: mclk
>+
>+  avdd-supply:
>+    description:
>+      Analog power supply.
>+
>+  dvdd-supply:
>+    description:
>+      Digital power supply.
>+
>+required:
>+  - compatible
>+  - reg
>+  - clocks
>+  - clock-names
>+  - avdd-supply
>+  - dvdd-supply
>+  - spi-cpol
>+
>+allOf:
>+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
>+
>+unevaluatedProperties: false
>+
>+examples:
>+  - |
>+    mclk: clock {
>+      compatible = "fixed-clock";
>+      #clock-cells = <0>;
>+      clock-frequency = <25000000>;
>+    };
>+
>+    vdd_3v3: regulator {
>+      compatible = "regulator-fixed";
>+      regulator-name = "vdd_3v3";
>+      regulator-min-microvolt = <3300000>;
>+      regulator-max-microvolt = <3300000>;
>+      regulator-always-on;
>+    };
>+
>+    spi {
>+      #address-cells = <1>;
>+      #size-cells = <0>;
>+
>+      dds@0 {
>+        compatible = "adi,ad9832";
>+        reg = <0>;
>+        spi-max-frequency = <20000000>;
>+        spi-cpol;
>+        clocks = <&mclk>;
>+        clock-names = "mclk";
>+        avdd-supply = <&vdd_3v3>;
>+        dvdd-supply = <&vdd_3v3>;
>+      };
>+    };

Re: [PATCH v3 1/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Jonathan Cameron]

On Sat,  9 May 2026 01:37:45 +0000
Hungyu Lin <dennylin0707@gmail.com> wrote:

> Add devicetree binding documentation for AD9832 and AD9835 DDS devices.
> 
> These devices are SPI-controlled direct digital synthesizers
> requiring AVDD, DVDD supplies and an external master clock.
> 
> Require spi-cpol since AD9832/AD9835 use SPI mode 2.
> Update the example to include spi-cpol and use a generic node name.
> 
> Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
As per v1 discussion that is ongoing - we haven't in the past put
dt-bindings in place until we are ready to move the driver in question
out of staging.  IIRC these are a fair way from reaching that stage.

Anyhow with that in mind a few quick comments inline.

Thanks,

Jonathan

> ---
>  .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
>  1 file changed, 91 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
> new file mode 100644
> index 000000000000..9f3e41cb0a0d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
> @@ -0,0 +1,91 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/dds/adi,ad9832.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices AD9832 / AD9835 DDS
> +
> +maintainers:
> +  - Hungyu Lin <dennylin0707@gmail.com>
> +
> +description: |
> +  Binding for Analog Devices AD9832 and AD9835 SPI-controlled direct
> +  digital synthesizers (DDS). The devices use an external master clock
> +  and are controlled over a serial SPI-compatible interface.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - adi,ad9832
> +      - adi,ad9835
> +
> +  reg:
> +    maxItems: 1
> +
> +  spi-max-frequency:
> +    maximum: 20000000
> +
> +  spi-cpol: true
> +
> +  clocks:
> +    maxItems: 1
> +    description:
> +      External master clock input.
> +
> +  clock-names:
> +    const: mclk

Do we need to name it if there is only one?

> +
> +  avdd-supply:
> +    description:
> +      Analog power supply.
> +
> +  dvdd-supply:
> +    description:
> +      Digital power supply.
Personally I'd not bother with the descriptions as
avdd is always analog supply and where you have one of those
dvdd is the digital one.  Absolutely fine to have

   avdd-supply: true
   dvdd-supply: true

And no more info about htem.

> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - avdd-supply
> +  - dvdd-supply
> +  - spi-cpol
> +
> +allOf:
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    mclk: clock {
> +      compatible = "fixed-clock";
> +      #clock-cells = <0>;
> +      clock-frequency = <25000000>;
> +    };
> +
> +    vdd_3v3: regulator {
> +      compatible = "regulator-fixed";
> +      regulator-name = "vdd_3v3";
> +      regulator-min-microvolt = <3300000>;
> +      regulator-max-microvolt = <3300000>;
> +      regulator-always-on;
> +    };

See other binding examples. Normally we just refer to clocks
and regulators etc that are magically coming from somewhere outside
of the example snippet. So shouldn't need any of the stuff above here.

> +
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      dds@0 {
> +        compatible = "adi,ad9832";
> +        reg = <0>;
> +        spi-max-frequency = <20000000>;
> +        spi-cpol;
> +        clocks = <&mclk>;
> +        clock-names = "mclk";
> +        avdd-supply = <&vdd_3v3>;
> +        dvdd-supply = <&vdd_3v3>;
> +      };
> +    };

Re: [PATCH v3 1/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Denny Lin]

On Mon, May 11, 2026 at 10:01 AM Jonathan Cameron <jic23@kernel.org> wrote:
>
> As per v1 discussion that is ongoing - we haven't in the past put
> dt-bindings in place until we are ready to move the driver in question
> out of staging.  IIRC these are a fair way from reaching that stage.
>

Thanks for the clarification.

I understand that DT bindings are typically added when the driver is
ready to move out of staging. I'm fine with deferring this until the
driver is closer to that stage.

I'll take your comments into account when revisiting this.

Thanks,
Hungyu

Re: [PATCH v3 0/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Sanjay Chitroda]

On 9 May 2026 7:07:44 am IST, Hungyu Lin <dennylin0707@gmail.com> wrote:
>This series adds devicetree binding documentation for the
>Analog Devices AD9832 and AD9835 DDS devices.
>
>v3:
>  - Require spi-cpol in binding and example
>  - Use generic node name (dds@0) in example
>

Hi,

Thank you for the change.

Ideally, multiple logical changes should be split into series. For a single patch you can include changelog like this:

Signed-off-by: ....
---
Changes in v2:
- Add SPI peripheral schema reference
---
 .../bindings..
         | 94 +++++++++++++++++++

If reviewer specifically asked to update, you can mention in the changelog as well. for examle:

- Add SPI peripheral schema reference based on review comment from <Reviewer Name>

Replace <Reviewer Name> with the actual reviewer.

Thanks,
Sanjay

>v2:
>  - Add SPI peripheral schema reference
>  - Fix example by adding clock and regulator providers
>  - Fix SPDX license format
>
>Hungyu Lin (1):
>  dt-bindings: iio: dds: Add AD9832/AD9835 binding
>
> .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
> 1 file changed, 91 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
>

Re: [PATCH v3 0/1] dt-bindings: iio: dds: Add AD9832/AD9835 binding

[Jonathan Cameron]

On Sat, 09 May 2026 07:40:55 +0530
Sanjay Chitroda <sanjayembeddedse@gmail.com> wrote:

> On 9 May 2026 7:07:44 am IST, Hungyu Lin <dennylin0707@gmail.com> wrote:
> >This series adds devicetree binding documentation for the
> >Analog Devices AD9832 and AD9835 DDS devices.
> >
> >v3:
> >  - Require spi-cpol in binding and example
> >  - Use generic node name (dds@0) in example
> >  
> 
> Hi,
> 
> Thank you for the change.
> 
> Ideally, multiple logical changes should be split into series. For a single patch you can include changelog like this:

Whilst in general that is true, here we are talking about a single
device tree binding.  Those are almost always single patch affairs
as they aren't normally that complex.

Jonathan

> 
> Signed-off-by: ....
> ---
> Changes in v2:
> - Add SPI peripheral schema reference
> ---
>  .../bindings..
>          | 94 +++++++++++++++++++
> 
> If reviewer specifically asked to update, you can mention in the changelog as well. for examle:
> 
> - Add SPI peripheral schema reference based on review comment from <Reviewer Name>
> 
> Replace <Reviewer Name> with the actual reviewer.
> 
> Thanks,
> Sanjay
> 
> >v2:
> >  - Add SPI peripheral schema reference
> >  - Fix example by adding clock and regulator providers
> >  - Fix SPDX license format
> >
> >Hungyu Lin (1):
> >  dt-bindings: iio: dds: Add AD9832/AD9835 binding
> >
> > .../bindings/iio/dds/adi,ad9832.yaml          | 91 +++++++++++++++++++
> > 1 file changed, 91 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/iio/dds/adi,ad9832.yaml
> >