[PATCH v8 6/8] dt-bindings: iio: adc: adi,ad4030: Add ADAQ4216 and ADAQ4224
From: Marcelo Schmitt <marcelo.schmitt@analog.com>
Date: 2026-02-06 19:02:26
Also in:
linux-doc, linux-iio, lkml
Subsystem:
ad4030 adc driver (ad4030-24/ad4630-16/ad4630-24/ad4632-16/ad4632-24), analog devices inc iio drivers, iio subsystem and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Michael Hennerich, Nuno Sá, Jonathan Cameron, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
ADAQ4216 and ADAQ4224 are similar to AD4030 except that ADAQ devices have a PGA (programmable gain amplifier) that scales the input signal prior to it reaching the ADC inputs. The PGA is controlled through a couple of pins (A0 and A1) that set one of four possible signal gain configurations. Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@analog.com> --- Change log v7 -> v8 - Fixed issues reported by dt_binding_check. .../bindings/iio/adc/adi,ad4030.yaml | 58 +++++++++++++++++++ 1 file changed, 58 insertions(+)
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
index a135c66142df..08b1f9d75f89 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4030.yaml@@ -19,6 +19,8 @@ description: | * https://www.analog.com/media/en/technical-documentation/data-sheets/ad4030-24-4032-24.pdf * https://www.analog.com/media/en/technical-documentation/data-sheets/ad4630-24_ad4632-24.pdf * https://www.analog.com/media/en/technical-documentation/data-sheets/ad4630-16-4632-16.pdf + * https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4216.pdf + * https://www.analog.com/media/en/technical-documentation/data-sheets/adaq4224.pdf $ref: /schemas/spi/spi-peripheral-props.yaml#
@@ -31,6 +33,8 @@ properties: - adi,ad4630-24 - adi,ad4632-16 - adi,ad4632-24 + - adi,adaq4216 + - adi,adaq4224 reg: maxItems: 1
@@ -62,6 +66,14 @@ properties: description: Internal buffered Reference. Used when ref-supply is not connected. + vddh-supply: + description: + PGIA Positive Power Supply. + + vdd-fda-supply: + description: + FDA Positive Power Supply. + cnv-gpios: description: The Convert Input (CNV). It initiates the sampling conversions.
@@ -72,6 +84,13 @@ properties: The Reset Input (/RST). Used for asynchronous device reset. maxItems: 1 + pga-gpios: + description: + A0 and A1 pins for gain selection. For devices that have PGA configuration + input pins, pga-gpios should be defined. + minItems: 2 + maxItems: 2 + pwms: description: PWM signal connected to the CNV pin. maxItems: 1
@@ -113,6 +132,22 @@ allOf: properties: spi-rx-bus-width: maxItems: 1 + # ADAQ devices require a gain property to indicate how hardware PGA is set + - if: + properties: + compatible: + contains: + pattern: ^adi,adaq + then: + required: + - vddh-supply + - vdd-fda-supply + - pga-gpios + properties: + ref-supply: false + else: + properties: + pga-gpios: false examples: - |
@@ -154,3 +189,26 @@ examples: reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; }; }; + - | + #include <dt-bindings/gpio/gpio.h> + + spi { + #address-cells = <1>; + #size-cells = <0>; + + adc@0 { + compatible = "adi,adaq4216"; + reg = <0>; + spi-max-frequency = <80000000>; + vdd-5v-supply = <&supply_5V>; + vdd-1v8-supply = <&supply_1_8V>; + vio-supply = <&supply_1_8V>; + refin-supply = <&refin_sup>; + vddh-supply = <&vddh>; + vdd-fda-supply = <&vdd_fda>; + cnv-gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>; + reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>; + pga-gpios = <&gpio0 2 GPIO_ACTIVE_HIGH>, + <&gpio0 3 GPIO_ACTIVE_HIGH>; + }; + };
--
2.39.2