[PATCH v7 1/2] dt-bindings: iio: adc: add adi,max40080
From: Stefan Popa <hidden>
Date: 2026-08-18 14:30:33
Also in:
linux-iio, lkml
Subsystem:
analog devices inc iio drivers, iio subsystem and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Nuno Sá, Michael Hennerich, Jonathan Cameron, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add device tree bindings for the Analog Devices MAX40080 bidirectional current-sense amplifier with a 12-bit ADC and an I2C/SMBus interface. Signed-off-by: Stefan Popa <redacted> --- .../bindings/iio/adc/adi,max40080.yaml | 65 +++++++++++++++++++ MAINTAINERS | 8 +++ 2 files changed, 73 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,max40080.yaml
diff --git a/Documentation/devicetree/bindings/iio/adc/adi,max40080.yaml b/Documentation/devicetree/bindings/iio/adc/adi,max40080.yaml
new file mode 100644
index 0000000000000..b0ec9159a2939
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/adi,max40080.yaml@@ -0,0 +1,65 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,max40080.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices MAX40080 bidirectional current-sense amplifier + +maintainers: + - Ciprian Hegbeli <ciprian.hegbeli@analog.com> + - Stefan Popa <stefan.popa@analog.com> + +description: | + The MAX40080 is a high-precision, bidirectional current-sense amplifier with + an integrated 12-bit ADC and an I2C/SMBus interface. It measures the voltage + across an external shunt resistor and the input bus voltage, and stores the + results in an internal FIFO. + + Datasheet: + https://www.analog.com/max40080 + +properties: + compatible: + const: adi,max40080 + + reg: + maxItems: 1 + + "#io-channel-cells": + const: 1 + + vdd-supply: + description: Power supply for the device. + + interrupts: + maxItems: 1 + description: ALERT_ output for overcurrent/undervoltage threshold events. + + shunt-resistor-micro-ohms: + description: + Value of the current-sense shunt resistor connected between the RS+ and + RS- inputs. Used to scale the reported current. + +required: + - compatible + - reg + - shunt-resistor-micro-ohms + - vdd-supply + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + adc@20 { + compatible = "adi,max40080"; + reg = <0x20>; + #io-channel-cells = <1>; + vdd-supply = <&vdd>; + shunt-resistor-micro-ohms = <100000>; + }; + };
diff --git a/MAINTAINERS b/MAINTAINERS
index e087673237636..c1e5afa42de2e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -15513,6 +15513,14 @@ L: linux-iio@vger.kernel.org S: Supported F: drivers/iio/temperature/max30208.c +MAXIM MAX40080 CURRENT SENSE AMPLIFIER DRIVER +M: Ciprian Hegbeli <ciprian.hegbeli@analog.com> +M: Stefan Popa <stefan.popa@analog.com> +L: linux-iio@vger.kernel.org +S: Supported +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/adc/adi,max40080.yaml + MAXIM MAX7360 KEYPAD LED MFD DRIVER M: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com> S: Maintained
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2.53.0