realtek,otto-gpio.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Realtek Otto GPIO controller
    8 
    9 maintainers:
   10   - Sander Vanheule <sander@svanheule.net>
   11   - Bert Vermeulen <bert@biot.com>
   12 
   13 description: |
   14   Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists
   15   of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts.
   16   Each bank's interrupts are cascased into one interrupt line on the parent
   17   interrupt controller, if provided.
   18   This binding allows defining a single bank in the devicetree. The interrupt
   19   controller is not supported on the fallback compatible name, which only
   20   allows for GPIO port use.
   21 
   22 properties:
   23   $nodename:
   24     pattern: "^gpio@[0-9a-f]+$"
   25 
   26   compatible:
   27     items:
   28       - enum:
   29           - realtek,rtl8380-gpio
   30           - realtek,rtl8390-gpio
   31           - realtek,rtl9300-gpio
   32           - realtek,rtl9310-gpio
   33       - const: realtek,otto-gpio
   34 
   35   reg: true
   36 
   37   "#gpio-cells":
   38     const: 2
   39 
   40   gpio-controller: true
   41 
   42   ngpios:
   43     minimum: 1
   44     maximum: 32
   45 
   46   interrupt-controller: true
   47 
   48   "#interrupt-cells":
   49     const: 2
   50 
   51   interrupts:
   52     maxItems: 1
   53 
   54 if:
   55   properties:
   56     compatible:
   57       contains:
   58         const: realtek,rtl9300-gpio
   59 then:
   60   properties:
   61     reg:
   62       items:
   63         - description: GPIO and interrupt control
   64         - description: interrupt CPU map
   65 else:
   66   properties:
   67     reg:
   68       items:
   69         - description: GPIO and interrupt control
   70 
   71 required:
   72   - compatible
   73   - reg
   74   - "#gpio-cells"
   75   - gpio-controller
   76 
   77 additionalProperties: false
   78 
   79 dependencies:
   80   interrupt-controller: [ interrupts ]
   81 
   82 examples:
   83   - |
   84       gpio@3500 {
   85         compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio";
   86         reg = <0x3500 0x1c>;
   87         gpio-controller;
   88         #gpio-cells = <2>;
   89         ngpios = <24>;
   90         interrupt-controller;
   91         #interrupt-cells = <2>;
   92         interrupt-parent = <&rtlintc>;
   93         interrupts = <23>;
   94       };
   95   - |
   96       gpio@3300 {
   97         compatible = "realtek,rtl9300-gpio", "realtek,otto-gpio";
   98         reg = <0x3300 0x1c>, <0x3338 0x8>;
   99         gpio-controller;
  100         #gpio-cells = <2>;
  101         ngpios = <24>;
  102         interrupt-controller;
  103         #interrupt-cells = <2>;
  104         interrupt-parent = <&rtlintc>;
  105         interrupts = <13>;
  106       };
  107 
  108 ...

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sys/contrib/device-tree/Bindings/gpio/realtek,otto-gpio.yaml