linux-kernel - [PATCH v10 1/2] dt-bindings: iio: adc: add max14001

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Message-Id: <34b7cc7226e789acdc884d35927269aa5a0d5e14.1756816682.git.marilene.agarcia@gmail.com>
Date: Tue,  2 Sep 2025 10:15:50 -0300
From: Marilene Andrade Garcia <marilene.agarcia@...il.com>
To: linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org
Cc: Marilene Andrade Garcia <marilene.agarcia@...il.com>,
	Kim Seer Paller <kimseer.paller@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Marcelo Schmitt <marcelo.schmitt1@...il.com>,
	Marcelo Schmitt <Marcelo.Schmitt@...log.com>,
	Ceclan Dumitru <dumitru.ceclan@...log.com>,
	Jonathan Santos <Jonathan.Santos@...log.com>,
	Dragos Bogdan <dragos.bogdan@...log.com>
Subject: [PATCH v10 1/2] dt-bindings: iio: adc: add max14001

Add device-tree documentation for MAX14001/MAX14002 ADCs.
The MAX14001/MAX14002 are isolated, single-channel analog-to-digital
converters with programmable voltage comparators and inrush current
control optimized for configurable binary input applications.

Co-developed-by: Marilene Andrade Garcia <marilene.agarcia@...il.com>
Signed-off-by: Marilene Andrade Garcia <marilene.agarcia@...il.com>
Signed-off-by: Kim Seer Paller <kimseer.paller@...log.com>
---
 .../bindings/iio/adc/adi,max14001.yaml        | 79 +++++++++++++++++++
 MAINTAINERS                                   |  8 ++
 2 files changed, 87 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml b/Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml
new file mode 100644
index 000000000000..ff9a41f04300
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2023-2025 Analog Devices Inc.
+# Copyright 2023 Kim Seer Paller
+# Copyright 2025 Marilene Andrade Garcia
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/adi,max14001.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX14001-MAX14002 ADC
+
+maintainers:
+  - Kim Seer Paller <kimseer.paller@...log.com>
+  - Marilene Andrade Garcia <marilene.agarcia@...il.com>
+
+description: |
+    Single channel 10 bit ADC with SPI interface.
+    Datasheet can be found here
+      https://www.analog.com/media/en/technical-documentation/data-sheets/MAX14001-MAX14002.pdf
+
+$ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - adi,max14001
+      - adi,max14002
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 5000000
+
+  vdd-supply:
+    description:
+      Isolated DC-DC power supply input voltage.
+
+  vddl-supply:
+    description:
+      Logic power supply.
+
+  vrefin-supply:
+    description:
+      ADC voltage reference supply.
+
+  interrupts:
+    items:
+      - description: |
+          Interrupt for signaling when conversion results exceed the configured
+          upper threshold for ADC readings or fall below the lower threshold for
+          them. Interrupt source must be attached to COUT pin.
+      - description: |
+          Alert output that asserts low during a number of different error
+          conditions. The interrupt source must be attached to FAULT pin.
+
+required:
+  - compatible
+  - reg
+  - vdd-supply
+  - vddl-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      max14001: adc@0 {
+        compatible = "adi,max14001";
+        reg = <0>;
+        spi-max-frequency = <5000000>;
+        vdd-supply = <&vdd>;
+        vddl-supply = <&vddl>;
+      };
+    };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index af1c8d2bfb3d..f145f0204407 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14969,6 +14969,14 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/sound/max9860.txt
 F:	sound/soc/codecs/max9860.*
 
+MAX14001/MAX14002 IIO ADC DRIVER
+M:	Kim Seer Paller <kimseer.paller@...log.com>
+M:	Marilene Andrade Garcia <marilene.agarcia@...il.com>
+L:	linux-iio@...r.kernel.org
+S:	Maintained
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml
+
 MAXBOTIX ULTRASONIC RANGER IIO DRIVER
 M:	Andreas Klinger <ak@...klinger.de>
 L:	linux-iio@...r.kernel.org
-- 
2.34.1