[PATCH 1/2] dt-bindings: iio: adc: Add binding for AD7380 ADCs

From: David Lechner
Date: Fri Dec 08 2023 - 10:52:46 EST


This adds a binding specification for the Analog Devices Inc. AD7380
family of ADCs.

Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx>
---
.../devicetree/bindings/iio/adc/adi,ad7380.yaml | 102 +++++++++++++++++++++
MAINTAINERS | 9 ++
2 files changed, 111 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
new file mode 100644
index 000000000000..e9a0b72cd9d3
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,ad7380.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices Simultaneous Sampling Analog to Digital Converters
+
+maintainers:
+ - Michael Hennerich <Michael.Hennerich@xxxxxxxxxx>
+ - Nuno Sá <nuno.sa@xxxxxxxxxx>
+
+description: |
+ * https://www.analog.com/en/products/ad7380.html
+ * https://www.analog.com/en/products/ad7381.html
+ * https://www.analog.com/en/products/ad7383.html
+ * https://www.analog.com/en/products/ad7384.html
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ enum:
+ - adi,ad7380
+ - adi,ad7381
+ - adi,ad7383
+ - adi,ad7384
+
+ reg: true
+
+ spi-max-frequency:
+ maximum: 80000000
+ spi-cpol: true
+ spi-cpha: true
+
+ adi,sdo-mode:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [ 1-wire, 2-wire ]
+ description:
+ In 1-wire mode, the SDOA pin acts as the sole data line and the SDOB/ALERT
+ pin acts as the ALERT interrupt signal. In 2-wire mode, data for input A
+ is read from SDOA and data for input B is read from SDOB/ALERT (and the
+ ALERT interrupt signal is not available).
+
+ vcc-supply:
+ description: A 3V to 3.6V supply that powers the chip.
+
+ vlogic-supply:
+ description:
+ A 1.65V to 3.6V supply for the logic pins.
+
+ refio-supply:
+ description:
+ A 2.5V to 3.3V supply for the external reference voltage. When omitted,
+ the internal 2.5V reference is used.
+
+ interrupts:
+ description:
+ When the device is using 1-wire mode, this property is used to optionally
+ specify the ALERT interrupt.
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - adi,sdo-mode
+ - vcc-supply
+ - vlogic-supply
+
+allOf:
+ - if:
+ properties:
+ adi,sdo-mode:
+ const: 2-wire
+ then:
+ properties:
+ interrupts: false
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ adc@0 {
+ compatible = "adi,ad7380";
+ reg = <0>;
+
+ spi-cpol;
+ spi-cpha;
+ spi-max-frequency = <80000000>;
+
+ adi,sdo-mode = "1-wire";
+ interrupts = <27>;
+
+ vcc-supply = <&supply_3_3V>;
+ vlogic-supply = <&supply_3_3V>;
+ refio-supply = <&supply_2_5V>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index fe1f6f97f96a..e2a998be5879 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -430,6 +430,15 @@ W: http://wiki.analog.com/AD7142
W: https://ez.analog.com/linux-software-drivers
F: drivers/input/misc/ad714x.c

+AD738X ADC DRIVER (AD7380/1/2/4)
+M: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
+M: Nuno Sá <nuno.sa@xxxxxxxxxx>
+R: David Lechner <dlechner@xxxxxxxxxxxx>
+S: Supported
+W: https://wiki.analog.com/resources/tools-software/linux-drivers/iio-adc/ad738x
+W: https://ez.analog.com/linux-software-drivers
+F: Documentation/devicetree/bindings/iio/adc/adi,ad7380.yaml
+
AD7877 TOUCHSCREEN DRIVER
M: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
S: Supported

--
2.43.0