0001 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Realtek Otto GPIO controller
0008
0009 maintainers:
0010 - Sander Vanheule <sander@svanheule.net>
0011 - Bert Vermeulen <bert@biot.com>
0012
0013 description: |
0014 Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists
0015 of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts.
0016 Each bank's interrupts are cascased into one interrupt line on the parent
0017 interrupt controller, if provided.
0018 This binding allows defining a single bank in the devicetree. The interrupt
0019 controller is not supported on the fallback compatible name, which only
0020 allows for GPIO port use.
0021
0022 properties:
0023 $nodename:
0024 pattern: "^gpio@[0-9a-f]+$"
0025
0026 compatible:
0027 items:
0028 - enum:
0029 - realtek,rtl8380-gpio
0030 - realtek,rtl8390-gpio
0031 - realtek,rtl9300-gpio
0032 - realtek,rtl9310-gpio
0033 - const: realtek,otto-gpio
0034
0035 reg: true
0036
0037 "#gpio-cells":
0038 const: 2
0039
0040 gpio-controller: true
0041
0042 ngpios:
0043 minimum: 1
0044 maximum: 32
0045
0046 interrupt-controller: true
0047
0048 "#interrupt-cells":
0049 const: 2
0050
0051 interrupts:
0052 maxItems: 1
0053
0054 if:
0055 properties:
0056 compatible:
0057 contains:
0058 const: realtek,rtl9300-gpio
0059 then:
0060 properties:
0061 reg:
0062 items:
0063 - description: GPIO and interrupt control
0064 - description: interrupt CPU map
0065 else:
0066 properties:
0067 reg:
0068 items:
0069 - description: GPIO and interrupt control
0070
0071 required:
0072 - compatible
0073 - reg
0074 - "#gpio-cells"
0075 - gpio-controller
0076
0077 additionalProperties: false
0078
0079 dependencies:
0080 interrupt-controller: [ interrupts ]
0081
0082 examples:
0083 - |
0084 gpio@3500 {
0085 compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio";
0086 reg = <0x3500 0x1c>;
0087 gpio-controller;
0088 #gpio-cells = <2>;
0089 ngpios = <24>;
0090 interrupt-controller;
0091 #interrupt-cells = <2>;
0092 interrupt-parent = <&rtlintc>;
0093 interrupts = <23>;
0094 };
0095 - |
0096 gpio@3300 {
0097 compatible = "realtek,rtl9300-gpio", "realtek,otto-gpio";
0098 reg = <0x3300 0x1c>, <0x3338 0x8>;
0099 gpio-controller;
0100 #gpio-cells = <2>;
0101 ngpios = <24>;
0102 interrupt-controller;
0103 #interrupt-cells = <2>;
0104 interrupt-parent = <&rtlintc>;
0105 interrupts = <13>;
0106 };
0107
0108 ...
