[PATCH v9 09/17] dt-bindings: iio: frequency: add ad9910

From: Rodrigo Alencar via B4 Relay

Date: Wed Jul 22 2026 - 12:14:36 EST

From: Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>

DT-bindings for AD9910, a 1 GSPS DDS with 14-bit DAC. It includes
configurations for clocks, PLL configs, reset and basic GPIO control.

Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>
---
.../bindings/iio/frequency/adi,ad9910.yaml | 209 +++++++++++++++++++++
MAINTAINERS | 7 +
2 files changed, 216 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..4eebbd388b27
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml
@@ -0,0 +1,209 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/frequency/adi,ad9910.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD9910 Direct Digital Synthesizer
+
+maintainers:
+ - Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>
+
+description: >
+ The AD9910 is a 1 GSPS direct digital synthesizer (DDS) with an integrated
+ 14-bit DAC. It features single tone mode with 8 configurable profiles,
+ a digital ramp generator, RAM control, OSK, and a parallel data port for
+ high-speed streaming.
+
+ https://www.analog.com/en/products/ad9910.html
+
+properties:
+ compatible:
+ const: adi,ad9910
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 70000000
+
+ clocks:
+ minItems: 1
+ items:
+ - description: Reference clock (REF_CLK).
+ - description: Optional synchronization clock (SYNC_IN).
+
+ clock-names:
+ minItems: 1
+ items:
+ - const: ref_clk
+ - const: sync_in
+
+ '#clock-cells':
+ const: 1
+
+ clock-output-names:
+ items:
+ - const: sync_clk
+ - const: pdclk
+ - const: sync_out
+
+ interrupts:
+ minItems: 1
+ maxItems: 2
+ description:
+ Requires interrupt-names property with the same number of items. The
+ supported interrupts are 'drover' (digital ramp generator limit) and
+ 'ram_swp_ovr' (end of RAM sweep).
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum: [ drover, ram_swp_ovr ]
+
+ dvdd-io33-supply:
+ description: 3.3V Digital I/O supply.
+
+ avdd33-supply:
+ description: 3.3V Analog DAC supply.
+
+ dvdd18-supply:
+ description: 1.8V Digital Core supply.
+
+ avdd18-supply:
+ description: 1.8V Analog Core supply.
+
+ reset-gpios:
+ maxItems: 1
+ 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.
+
+ lock-detect-gpios:
+ maxItems: 1
+ description:
+ GPIO used to read PLL_LOCK pin status.
+
+ pwms:
+ maxItems: 1
+ description:
+ PWM used to drive the DRCTL pin, which controls the digital ramp
+ generator slope direction.
+
+ pwm-names:
+ items:
+ - const: drctl
+
+ adi,pll-enable:
+ type: boolean
+ description:
+ Enables the internal PLL. Applicable when external loop filter components
+ are connected to the PLL_LOOP_FILTER pin and low reference clock
+ frequencies are used, often provided by a crystal or by a single-ended
+ on-board oscillator.
+
+ adi,charge-pump-current-microamp:
+ minimum: 212
+ maximum: 387
+ default: 212
+ description:
+ PLL charge pump current in microamps. Only applicable when the internal
+ PLL is enabled. The value is rounded to the nearest supported step. This
+ value depends mostly on the loop filter design.
+
+ adi,refclk-out-drive-strength:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [ disabled, low, medium, high ]
+ default: disabled
+ description:
+ Reference clock output (DRV0) drive strength. Only applicable when
+ the internal PLL is enabled.
+
+dependencies:
+ adi,charge-pump-current-microamp: [ 'adi,pll-enable' ]
+ adi,refclk-out-drive-strength: [ 'adi,pll-enable' ]
+ lock-detect-gpios: [ 'adi,pll-enable' ]
+ interrupts: [ interrupt-names ]
+ pwms: [ pwm-names ]
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - '#clock-cells'
+ - dvdd-io33-supply
+ - avdd33-supply
+ - dvdd18-supply
+ - avdd18-supply
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ dds@0 {
+ compatible = "adi,ad9910";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+
+ #clock-cells = <1>;
+ clock-output-names = "sync_clk", "pdclk", "sync_out";
+
+ clocks = <&ad9910_refclk>;
+ clock-names = "ref_clk";
+
+ dvdd-io33-supply = <&vdd_io33>;
+ avdd33-supply = <&vdd_a33>;
+ dvdd18-supply = <&vdd_d18>;
+ avdd18-supply = <&vdd_a18>;
+
+ reset-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+ io-reset-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+ powerdown-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
+ update-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>;
+ profile-gpios = <&gpio 4 GPIO_ACTIVE_HIGH>,
+ <&gpio 5 GPIO_ACTIVE_HIGH>,
+ <&gpio 6 GPIO_ACTIVE_HIGH>;
+
+ pwms = <&pwm 0 1000000 0>;
+ pwm-names = "drctl";
+
+ adi,pll-enable;
+ adi,charge-pump-current-microamp = <387>;
+ adi,refclk-out-drive-strength = "disabled";
+ };
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index d61447c9d197..380455e5b7ee 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1678,6 +1678,13 @@ W: https://ez.analog.com/linux-software-drivers
F: Documentation/devicetree/bindings/iio/dac/adi,ad9739a.yaml
F: drivers/iio/dac/ad9739a.c

+ANALOG DEVICES INC AD9910 DRIVER
+M: Rodrigo Alencar <rodrigo.alencar@xxxxxxxxxx>
+L: linux-iio@xxxxxxxxxxxxxxx
+S: Supported
+W: https://ez.analog.com/linux-software-drivers
+F: Documentation/devicetree/bindings/iio/frequency/adi,ad9910.yaml
+
ANALOG DEVICES INC MAX22007 DRIVER
M: Janani Sunil <janani.sunil@xxxxxxxxxx>
L: linux-iio@xxxxxxxxxxxxxxx

--
2.43.0