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