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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/iio/adc/avia-hx711.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: AVIA HX711 ADC chip for weight cells
+
+maintainers:
+ - Andreas Klinger <ak@it-klinger.de>
+
+description: |
+ Bit-banging driver using two GPIOs:
+ - sck-gpio gives a clock to the sensor with 24 cycles for data retrieval
+ and up to 3 cycles for selection of the input channel and gain for the
+ next measurement
+ - dout-gpio is the sensor data the sensor responds to the clock
+
+ Specifications about the driver can be found at:
+ http://www.aviaic.com/ENProducts.aspx
+
+properties:
+ compatible:
+ enum:
+ - avia,hx711
+
+ sck-gpios:
+ description:
+ Definition of the GPIO for the clock (output). In the datasheet it is
+ named PD_SCK
+ maxItems: 1
+
+ dout-gpios:
+ description:
+ Definition of the GPIO for the data-out sent by the sensor in
+ response to the clock (input).
+ See Documentation/devicetree/bindings/gpio/gpio.txt for information
+ on how to specify a consumer gpio.
+ maxItems: 1
+
+ avdd-supply:
+ description:
+ Definition of the regulator used as analog supply
+ maxItems: 1
+
+ clock-frequency:
+ minimum: 20000
+ maximum: 2500000
+ default: 400000
+
+required:
+ - compatible
+ - sck-gpios
+ - dout-gpios
+ - avdd-supply
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ weight {
+ compatible = "avia,hx711";
+ sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>;
+ dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
+ avdd-suppy = <&avdd>;
+ clock-frequency = <100000>;
+ };