realtek,otto-gpio.yaml

  1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Realtek Otto GPIO controller
  8
  9maintainers:
 10  - Sander Vanheule <sander@svanheule.net>
 11  - Bert Vermeulen <bert@biot.com>
 12
 13description: |
 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
 22properties:
 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
 54if:
 55  properties:
 56    compatible:
 57      contains:
 58        const: realtek,rtl9300-gpio
 59then:
 60  properties:
 61    reg:
 62      items:
 63        - description: GPIO and interrupt control
 64        - description: interrupt CPU map
 65else:
 66  properties:
 67    reg:
 68      items:
 69        - description: GPIO and interrupt control
 70
 71required:
 72  - compatible
 73  - reg
 74  - "#gpio-cells"
 75  - gpio-controller
 76
 77additionalProperties: false
 78
 79dependencies:
 80  interrupt-controller: [ interrupts ]
 81
 82examples:
 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...