snps,dw-apb-gpio.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/gpio/snps,dw-apb-gpio.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Synopsys DesignWare APB GPIO controller
    8 
    9 description: |
   10   Synopsys DesignWare GPIO controllers have a configurable number of ports,
   11   each of which are intended to be represented as child nodes with the generic
   12   GPIO-controller properties as desribed in this bindings file.
   13 
   14 maintainers:
   15   - Hoan Tran <hoan@os.amperecomputing.com>
   16   - Serge Semin <fancer.lancer@gmail.com>
   17 
   18 properties:
   19   $nodename:
   20     pattern: "^gpio@[0-9a-f]+$"
   21 
   22   compatible:
   23     const: snps,dw-apb-gpio
   24 
   25   "#address-cells":
   26     const: 1
   27 
   28   "#size-cells":
   29     const: 0
   30 
   31   reg:
   32     maxItems: 1
   33 
   34   clocks:
   35     minItems: 1
   36     items:
   37       - description: APB interface clock source
   38       - description: DW GPIO debounce reference clock source
   39 
   40   clock-names:
   41     minItems: 1
   42     items:
   43       - const: bus
   44       - const: db
   45 
   46   resets:
   47     maxItems: 1
   48 
   49 patternProperties:
   50   "^gpio-(port|controller)@[0-9a-f]+$":
   51     type: object
   52     properties:
   53       compatible:
   54         const: snps,dw-apb-gpio-port
   55 
   56       reg:
   57         maxItems: 1
   58 
   59       gpio-controller: true
   60 
   61       '#gpio-cells':
   62         const: 2
   63 
   64       ngpios:
   65         default: 32
   66         minimum: 1
   67         maximum: 32
   68 
   69       snps,nr-gpios:
   70         description: The number of GPIO pins exported by the port.
   71         deprecated: true
   72         $ref: /schemas/types.yaml#/definitions/uint32
   73         default: 32
   74         minimum: 1
   75         maximum: 32
   76 
   77       interrupts:
   78         description: |
   79           The interrupts to the parent controller raised when GPIOs generate
   80           the interrupts. If the controller provides one combined interrupt
   81           for all GPIOs, specify a single interrupt. If the controller provides
   82           one interrupt for each GPIO, provide a list of interrupts that
   83           correspond to each of the GPIO pins.
   84         minItems: 1
   85         maxItems: 32
   86 
   87       interrupt-controller: true
   88 
   89       '#interrupt-cells':
   90         const: 2
   91 
   92     required:
   93       - compatible
   94       - reg
   95       - gpio-controller
   96       - '#gpio-cells'
   97 
   98     dependencies:
   99       interrupt-controller: [ interrupts ]
  100 
  101     additionalProperties: false
  102 
  103 additionalProperties: false
  104 
  105 required:
  106   - compatible
  107   - reg
  108   - "#address-cells"
  109   - "#size-cells"
  110 
  111 examples:
  112   - |
  113     gpio: gpio@20000 {
  114       compatible = "snps,dw-apb-gpio";
  115       reg = <0x20000 0x1000>;
  116       #address-cells = <1>;
  117       #size-cells = <0>;
  118 
  119       porta: gpio-port@0 {
  120         compatible = "snps,dw-apb-gpio-port";
  121         reg = <0>;
  122         gpio-controller;
  123         #gpio-cells = <2>;
  124         snps,nr-gpios = <8>;
  125         interrupt-controller;
  126         #interrupt-cells = <2>;
  127         interrupt-parent = <&vic1>;
  128         interrupts = <0>;
  129       };
  130 
  131       portb: gpio-port@1 {
  132         compatible = "snps,dw-apb-gpio-port";
  133         reg = <1>;
  134         gpio-controller;
  135         #gpio-cells = <2>;
  136         snps,nr-gpios = <8>;
  137       };
  138     };
  139 ...

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sys/contrib/device-tree/Bindings/gpio/snps,dw-apb-gpio.yaml