Re: [PATCH RFC v3 1/9] dt-bindings: iio: frequency: add ad9910

Jonathan Cameron
2026-04-26T11:01:50Z

On Fri, 17 Apr 2026 09:17:30 +0100
Rodrigo Alencar via B4 Relay <devnull+rodrigo.alencar.analog.com@kernel.org> wrote:

> From: Rodrigo Alencar <rodrigo.alencar@analog.com>
>
> DT-bindings for AD9910, a 1 GSPS DDS with 14-bit DAC. It includes
> configurations for clocks, DAC current, reset and basic GPIO control.
>
> Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
> ---
> .../bindings/iio/frequency/adi,ad9910.yaml | 189 +++++++++++++++++++++
> MAINTAINERS | 7 +
> 2 files changed, 196 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml b/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml
> new file mode 100644
> index 000000000000..61e879bca5c2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml

...

> +
> + reset-gpios:
> + description:
> + GPIOs controlling the Main Device reset.
> +
> + io-reset-gpios:
> + maxItems: 1
> + description:
> + GPIO controlling the I/O_RESET pin.
> +
> + powerdown-gpios:
> + maxItems: 1
> + description:
> + GPIO controlling the EXT_PWR_DWN pin.
> +
> + update-gpios:
> + maxItems: 1
> + description:
> + GPIO controlling the I/O_UPDATE pin.
> +
> + profile-gpios:
> + minItems: 3
> + maxItems: 3
> + description:
> + GPIOs controlling the PROFILE[2:0] pins for profile selection.
> +
> + sync-err-gpios:
> + maxItems: 1
> + description:
> + GPIO used to read SYNC_SMP_ERR pin status.
Looking at the datasheet there are a few other things that might want to be here.

pll-lock for example might be wired to a gpio to allow a check that lock has
occurred. Maybe sync-samp-err as well though possibly that one wants to be an
interrupt?