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([2405:201:6803:38cc:eb35:b786:98be:f27d]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-b4c2fc5f9ccsm134253a12.45.2025.08.25.14.25.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Aug 2025 14:25:37 -0700 (PDT) From: Abhinav Jain To: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: lars@metafoo.de, Michael.Hennerich@analog.com, alexandru.ardelean@analog.com, jlc23@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, Marcelo.Schmitt@analog.com, dumitru.ceclan@analog.com, Jonathan.Santos@analog.com, dragos.bogdan@analog.com, Abhinav Jain Subject: [PATCH v1 1/2] dt-bindings: iio: adc: Add device tree binding for MAX22531 ADC Date: Tue, 26 Aug 2025 02:55:24 +0530 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Add device tree documentation for MAX22530-MAX22532 family of ADCs. The MAX22530=E2=80=93MAX22532 are galvanically isolated, 4-channel, multipl= exed, 12-bit, analog-to-digital converters (ADC) in the MAXSafe=E2=84=A2 family p= roduct line. An integrated, isolated, DC-DC converter powers all fieldside circuitry, and this allows field-side diagnostics even when no input signal is present. Signed-off-by: Abhinav Jain --- .../bindings/iio/adc/adi,max22531.yaml | 75 +++++++++++++++++++ MAINTAINERS | 7 ++ 2 files changed, 82 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,max22531.= yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,max22531.yaml b/= Documentation/devicetree/bindings/iio/adc/adi,max22531.yaml new file mode 100644 index 000000000000..16bf4a1d0926 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,max22531.yaml @@ -0,0 +1,75 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright 2025 Abhinav Jain +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,max22531.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices MAX22530-MAX22532 12-bit Field Isolated ADCs + +maintainers: + - Abhinav Jain + +description: + Bindings for the Analog Devices Max22530-MAX22532 Field-Side Self-Powere= d, + 4-Channel, 12-bit, Isolated ADCs. + + Datasheet can be found here + https://www.analog.com/media/en/technical-documentation/data-sheets/ma= x22530-max22532.pdf + +$ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - adi,max22530 + - adi,max22531 + - adi,max22532 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 10000000 + description: Maximum SPI frequency (Hz) + + vddl-supply: + description: + Logic power supply. + + vddpl-supply: + description: + Isolated DC-DC converter power supply. + + interrupts: + items: + - description: | + Interrupt for signaling when conversion results exceed the upper + threshold for ADC readings or fall below the lower threshold. The + interrupt source must be attached to one of COUT1 to COUT4 pins. + - description: | + Alert output that asserts low during a number of different error + conditions. The interrupt source must be attached to INT pin. + +required: + - compatible + - reg + - vddl-supply + - vddpl-supply + +additionalProperties: false + +examples: + - | + spi { + #address-cells =3D <1>; + #size-cells =3D <0>; + + max22531: adc@0 { + compatible =3D "adi,max22531"; + reg =3D <0>; + spi-max-frequency =3D <5000000>; + vddl-supply =3D <&vddl>; + vddpl-supply =3D <&vddpl>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index a92290fffa16..6f26db9cf742 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14702,6 +14702,13 @@ F: Documentation/userspace-api/media/drivers/max21= 75.rst F: drivers/media/i2c/max2175* F: include/uapi/linux/max2175.h =20 +MAX22531 ADC DRIVER +M: Abhinav Jain +L: linux-iio@vger.kernel.org +S: Maintained +W: https://ez.analog.com/linux-software-drivers +F: Documentation/devicetree/bindings/iio/adc/adi,max22531.yaml + MAX31335 RTC DRIVER M: Antoniu Miclaus L: linux-rtc@vger.kernel.org --=20 2.34.1