[PATCH v4 1/3] dt-bindings: iio: adc: add a7779 doc

Ramona Alexandra Nechita
2024-07-24T15:56:39Z

Add dt bindings for adc ad7779.

Signed-off-by: Ramona Alexandra Nechita <ramona.nechita@analog.com>
---
.../bindings/iio/adc/adi,ad7779.yaml | 85 +++++++++++++++++++
1 file changed, 85 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
new file mode 100644
index 000000000000..10a67644e915
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7779.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7779.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AD777X family 8-Channel, 24-Bit, Simultaneous Sampling ADCs
+
+maintainers:
+ - Ramona Nechita <ramona.nechita@analog.com>
+
+description: |
+ The AD777X family consist of 8-channel, simultaneous sampling analog-to-
+ digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The
+ AD7771 provides an ultralow input current to allow direct sensor
+ connection. Each input channel has a programmable gain stage
+ allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor
+ outputs into the full-scale ADC input range, maximizing the
+ dynamic range of the signal chain.
+
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7770.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7771.pdf
+ https://www.analog.com/media/en/technical-documentation/data-sheets/ad7779.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ enum:
+ - adi,ad7770
+ - adi,ad7771
+ - adi,ad7779
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ clocks:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ vref-supply:
+ description:
+ The regulator to use as an external reference. If it does not exists the
+ internal reference will be used.
+
+ start-gpios:
+ description:
+ Pin that controls start synchronization pulse.
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad7779";
+ reg = <0>;
+ vref-supply = <&vref>;
+ start-gpios = <&gpio0 87 GPIO_ACTIVE_LOW>;
+ reset-gpios = <&gpio0 93 GPIO_ACTIVE_LOW>;
+ clocks = <&adc_clk>;
+ };
+ };
+...
--
2.43.0