linux-kernel - [PATCH v1 1/2] dt-bindings: iio: adc: Add MAX14001

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Message-Id: <6690320bcf9f0b8a5bf58048673e4f6a884c724b.1755778212.git.marilene.agarcia@gmail.com>
Date: Thu, 21 Aug 2025 10:38:29 -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>,
	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 v1 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.

Signed-off-by: Marilene Andrade Garcia <marilene.agarcia@...il.com>
---
 .../bindings/iio/adc/adi,max14001.yaml        | 78 +++++++++++++++++++
 MAINTAINERS                                   |  7 ++
 2 files changed, 85 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..3b2a2e788a17
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,max14001.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# 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 10-bit ADCs
+
+maintainers:
+  - Marilene Andrade Garcia <marilene.agarcia@...il.com>
+
+description:
+  Bindings for the Analog Devices MAX14001-MAX14002 Configurable,
+  Isolated 10-bit ADCs for Multi-Range Binary Inputs.
+
+  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
+
+  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.
+
+  spi-max-frequency:
+    maximum: 5000000
+
+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..0aeab5dbd39d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14984,6 +14984,13 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/iio/adc/maxim,max11205.yaml
 F:	drivers/iio/adc/max11205.c
 
+MAXIM MAX14001/MAX14002 DRIVER
+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
+
 MAXIM MAX17040 FAMILY FUEL GAUGE DRIVERS
 R:	Iskren Chernev <iskren.chernev@...il.com>
 R:	Krzysztof Kozlowski <krzk@...nel.org>
-- 
2.34.1