interrupt-counter.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/counter/interrupt-counter.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Interrupt counter
    8 
    9 maintainers:
   10   - Oleksij Rempel <o.rempel@pengutronix.de>
   11 
   12 description: |
   13   A generic interrupt counter to measure interrupt frequency. It was developed
   14   and used for agricultural devices to measure rotation speed of wheels or
   15   other tools. Since the direction of rotation is not important, only one
   16   signal line is needed.
   17   Interrupts or gpios are required. If both are defined, the interrupt will
   18   take precedence for counting interrupts.
   19 
   20 properties:
   21   compatible:
   22     const: interrupt-counter
   23 
   24   interrupts:
   25     maxItems: 1
   26 
   27   gpios:
   28     maxItems: 1
   29 
   30 required:
   31   - compatible
   32 
   33 anyOf:
   34   - required: [ interrupts-extended ]
   35   - required: [ interrupts ]
   36   - required: [ gpios ]
   37 
   38 additionalProperties: false
   39 
   40 examples:
   41   - |
   42 
   43     #include <dt-bindings/interrupt-controller/irq.h>
   44     #include <dt-bindings/gpio/gpio.h>
   45 
   46     counter-0 {
   47         compatible = "interrupt-counter";
   48         interrupts-extended = <&gpio 0 IRQ_TYPE_EDGE_RISING>;
   49     };
   50 
   51     counter-1 {
   52         compatible = "interrupt-counter";
   53         gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
   54     };
   55 
   56     counter-2 {
   57         compatible = "interrupt-counter";
   58         interrupts-extended = <&gpio 2 IRQ_TYPE_EDGE_RISING>;
   59         gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
   60     };
   61 
   62 ...

Cache object: 7d2c967966d246dc471aaa0e319d47bf

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sys/contrib/device-tree/Bindings/counter/interrupt-counter.yaml