109 lines
2.4 KiB
YAML
109 lines
2.4 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/gpio/realtek,otto-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Realtek Otto GPIO controller
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maintainers:
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- Sander Vanheule <sander@svanheule.net>
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- Bert Vermeulen <bert@biot.com>
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description: |
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Realtek's GPIO controller on their MIPS switch SoCs (Otto platform) consists
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of two banks of 32 GPIOs. These GPIOs can generate edge-triggered interrupts.
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Each bank's interrupts are cascased into one interrupt line on the parent
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interrupt controller, if provided.
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This binding allows defining a single bank in the devicetree. The interrupt
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controller is not supported on the fallback compatible name, which only
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allows for GPIO port use.
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properties:
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$nodename:
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pattern: "^gpio@[0-9a-f]+$"
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compatible:
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items:
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- enum:
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- realtek,rtl8380-gpio
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- realtek,rtl8390-gpio
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- realtek,rtl9300-gpio
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- realtek,rtl9310-gpio
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- const: realtek,otto-gpio
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reg: true
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"#gpio-cells":
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const: 2
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gpio-controller: true
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ngpios:
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minimum: 1
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maximum: 32
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interrupt-controller: true
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"#interrupt-cells":
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const: 2
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interrupts:
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maxItems: 1
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if:
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properties:
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compatible:
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contains:
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const: realtek,rtl9300-gpio
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then:
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properties:
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reg:
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items:
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- description: GPIO and interrupt control
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- description: interrupt CPU map
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else:
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properties:
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reg:
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items:
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- description: GPIO and interrupt control
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required:
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- compatible
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- reg
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- "#gpio-cells"
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- gpio-controller
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additionalProperties: false
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dependencies:
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interrupt-controller: [ interrupts ]
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examples:
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- |
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gpio@3500 {
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compatible = "realtek,rtl8380-gpio", "realtek,otto-gpio";
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reg = <0x3500 0x1c>;
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gpio-controller;
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#gpio-cells = <2>;
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ngpios = <24>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupt-parent = <&rtlintc>;
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interrupts = <23>;
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};
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- |
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gpio@3300 {
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compatible = "realtek,rtl9300-gpio", "realtek,otto-gpio";
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reg = <0x3300 0x1c>, <0x3338 0x8>;
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gpio-controller;
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#gpio-cells = <2>;
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ngpios = <24>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupt-parent = <&rtlintc>;
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interrupts = <13>;
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};
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...
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