[PATCH v7 7/8] dt-bindings: iio: adc: add ad4851

Antoniu Miclaus
2024-11-29T15:36:25Z

Add devicetree bindings for ad485x family.

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
changes in v7:
- add adc channels support
.../bindings/iio/adc/adi,ad4851.yaml | 139 ++++++++++++++++++
1 file changed, 139 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
new file mode 100644
index 000000000000..57e5222dee71
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad4851.yaml
@@ -0,0 +1,139 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2024 Analog Devices Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad4851.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD485X family
+
+maintainers:
+ - Sergiu Cuciurean <sergiu.cuciurean@analog.com>
+ - Dragos Bogdan <dragos.bogdan@analog.com>
+ - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+ Analog Devices AD485X fully buffered, 8-channel simultaneous sampling,
+ 16/20-bit, 1 MSPS data acquisition system (DAS) with differential, wide
+ common-mode range inputs.
+
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad4855.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad4856.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad4857.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad4858.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ enum:
+ - adi,ad4851
+ - adi,ad4852
+ - adi,ad4853
+ - adi,ad4854
+ - adi,ad4855
+ - adi,ad4856
+ - adi,ad4857
+ - adi,ad4858
+ - adi,ad4858i
+
+ reg:
+ maxItems: 1
+
+ vcc-supply: true
+
+ vee-supply: true
+
+ vdd-supply: true
+
+ vddh-supply: true
+
+ vddl-supply: true
+
+ vio-supply: true
+
+ vrefbuf-supply: true
+
+ vrefio-supply: true
+
+ pwms:
+ description: PWM connected to the CNV pin.
+ maxItems: 1
+
+ io-backends:
+ maxItems: 1
+
+ pd-gpios:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 25000000
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+patternProperties:
+ "^channel(@[0-7])?$":
+ $ref: adc.yaml
+ type: object
+ description: Represents the channels which are connected to the ADC.
+
+ properties:
+ reg:
+ description: The channel number in single-ended mode.
+ minimum: 0
+ maximum: 7
+
+ diff-channels: true
+
+ required:
+ - reg
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - vcc-supply
+ - vee-supply
+ - vdd-supply
+ - vio-supply
+ - pwms
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0{
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "adi,ad4858";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ vcc-supply = <&vcc>;
+ vdd-supply = <&vdd>;
+ vee-supply = <&vee>;
+ vddh-supply = <&vddh>;
+ vddl-supply = <&vddl>;
+ vio-supply = <&vio>;
+ pwms = <&pwm_gen 0 0>;
+ io-backends = <&iio_backend>;
+
+ channel@0 {
+ reg = <0>;
+ diff-channels = <0 8>;
+ };
+
+ channel@1 {
+ reg = <1>;
+ };
+ };
+ };
+...
--
2.47.1