Documentation/devicetree/bindings/gpio/airoha,en7523-gpio.yaml

   1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/gpio/airoha,en7523-gpio.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Airoha EN7523 GPIO controller
   8
   9 maintainers:
  10   - John Crispin <john@phrozen.org>
  11
  12 description: |
  13   Airoha's GPIO controller on their ARM EN7523 SoCs consists of two banks of 32
  14   GPIOs.
  15
  16 properties:
  17   $nodename:
  18     pattern: "^gpio@[0-9a-f]+$"
  19
  20   compatible:
  21     items:
  22       - const: airoha,en7523-gpio
  23
  24   reg:
  25     description: |
  26       The first tuple points to the input register.
  27       The second and third tuple point to the direction registers
  28       The fourth tuple points to the output register
  29     maxItems: 4
  30
  31   "#gpio-cells":
  32     const: 2
  33
  34   gpio-controller: true
  35
  36 required:
  37   - compatible
  38   - reg
  39   - "#gpio-cells"
  40   - gpio-controller
  41
  42 additionalProperties: false
  43
  44 examples:
  45   - |
  46     gpio0: gpio@1fbf0200 {
  47         compatible = "airoha,en7523-gpio";
  48         reg = <0x1fbf0204 0x4>,
  49               <0x1fbf0200 0x4>,
  50               <0x1fbf0220 0x4>,
  51               <0x1fbf0214 0x4>;
  52         gpio-controller;
  53         #gpio-cells = <2>;
  54     };
  55
  56     gpio1: gpio@1fbf0270 {
  57         compatible = "airoha,en7523-gpio";
  58         reg = <0x1fbf0270 0x4>,
  59               <0x1fbf0260 0x4>,
  60               <0x1fbf0264 0x4>,
  61               <0x1fbf0278 0x4>;
  62         gpio-controller;
  63         #gpio-cells = <2>;
  64     };
  65
  66 ...