avia-hx711.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: "http://devicetree.org/schemas/iio/adc/avia-hx711.yaml#"
    5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    6 
    7 title: AVIA HX711 ADC chip for weight cells
    8 
    9 maintainers:
   10   - Andreas Klinger <ak@it-klinger.de>
   11 
   12 description: |
   13   Bit-banging driver using two GPIOs:
   14   - sck-gpio gives a clock to the sensor with 24 cycles for data retrieval
   15     and up to 3 cycles for selection of the input channel and gain for the
   16     next measurement
   17   - dout-gpio is the sensor data the sensor responds to the clock
   18 
   19   Specifications about the driver can be found at:
   20   http://www.aviaic.com/ENProducts.aspx
   21 
   22 properties:
   23   compatible:
   24     enum:
   25       - avia,hx711
   26 
   27   sck-gpios:
   28     description:
   29       Definition of the GPIO for the clock (output). In the datasheet it is
   30       named PD_SCK
   31     maxItems: 1
   32 
   33   dout-gpios:
   34     description:
   35       Definition of the GPIO for the data-out sent by the sensor in
   36       response to the clock (input).
   37       See Documentation/devicetree/bindings/gpio/gpio.txt for information
   38       on how to specify a consumer gpio.
   39     maxItems: 1
   40 
   41   avdd-supply:
   42     description:
   43       Definition of the regulator used as analog supply
   44 
   45   clock-frequency:
   46     minimum: 20000
   47     maximum: 2500000
   48     default: 400000
   49 
   50 required:
   51   - compatible
   52   - sck-gpios
   53   - dout-gpios
   54   - avdd-supply
   55 
   56 additionalProperties: false
   57 
   58 examples:
   59   - |
   60     #include <dt-bindings/gpio/gpio.h>
   61     weight {
   62         compatible = "avia,hx711";
   63         sck-gpios = <&gpio3 10 GPIO_ACTIVE_HIGH>;
   64         dout-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
   65         avdd-supply = <&avdd>;
   66         clock-frequency = <100000>;
   67     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/iio/adc/avia-hx711.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/iio/adc/avia-hx711.yaml