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Mon, 20 Apr 2026 23:02:47 -0700 (PDT) Received: from PhantomX4 ([2402:3a80:51:767:3618:c13a:2d9b:d51a]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b5fa9fedf0sm144516425ad.6.2026.04.20.23.02.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2026 23:02:47 -0700 (PDT) From: Sudharshan To: jic23@kernel.org Cc: lars@metafoo.de, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, robh@kernel.org, Sudharshan Subject: [PATCH v2] dt-bindings: iio: adc: adi,ad7816: add binding for AD7816/7/8 Date: Tue, 21 Apr 2026 11:30:11 +0530 Message-ID: <20260421060011.12917-1-sudharsanam346@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add device tree binding documentation for Analog Devices AD7816, AD7817 and AD7818 10-bit ADC with on-chip temperature sensor. The devices communicate over SPI and expose: - up to 4 analog input channels (AD7817) - on-chip temperature sensor - a busy GPIO to signal ongoing conversion Signed-off-by: Sudharshan --- .../bindings/iio/adc/adi,ad7816.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad7816.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7816.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7816.yaml new file mode 100644 index 000000000000..6780510aaeb9 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7816.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/adi,ad7816.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Analog Devices AD7816/AD7817/AD7818 temperature sensor and ADC + +maintainers: + - Michael Hennerich + +description: | + The AD7816/AD7817/AD7818 are 10-bit analog to digital converters + with an on-chip temperature sensor. They communicate over SPI bus + and are commonly used in robotics and industrial applications for + temperature monitoring and analog signal conversion. + + Specifications on the converters can be found at: + AD7816: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7816.pdf + AD7817: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7817.pdf + AD7818: + https://www.analog.com/media/en/technical-documentation/data-sheets/AD7818.pdf + +properties: + compatible: + enum: + - adi,ad7816 + - adi,ad7817 + - adi,ad7818 + + reg: + maxItems: 1 + + spi-max-frequency: + maximum: 1000000 + + busy-gpios: + description: + GPIO connected to the busy pin of the AD7816/7/8. + The line is active high and indicates the chip is + performing a conversion. + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + adc@0 { + compatible = "adi,ad7816"; + reg = <0>; + spi-max-frequency = <1000000>; + busy-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; + }; + }; -- 2.53.0