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|
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/snps,dw-apb-gpio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Synopsys DesignWare APB GPIO controller
description: |
Synopsys DesignWare GPIO controllers have a configurable number of ports,
each of which are intended to be represented as child nodes with the generic
GPIO-controller properties as desribed in this bindings file.
maintainers:
- Hoan Tran <hoan@os.amperecomputing.com>
- Serge Semin <fancer.lancer@gmail.com>
properties:
$nodename:
pattern: "^gpio@[0-9a-f]+$"
compatible:
const: snps,dw-apb-gpio
"#address-cells":
const: 1
"#size-cells":
const: 0
reg:
maxItems: 1
clocks:
minItems: 1
items:
- description: APB interface clock source
- description: DW GPIO debounce reference clock source
clock-names:
minItems: 1
items:
- const: bus
- const: db
resets:
maxItems: 1
patternProperties:
"^gpio-(port|controller)@[0-9a-f]+$":
type: object
properties:
compatible:
const: snps,dw-apb-gpio-port
reg:
maxItems: 1
gpio-controller: true
'#gpio-cells':
const: 2
snps,nr-gpios:
description: The number of GPIO pins exported by the port.
$ref: /schemas/types.yaml#/definitions/uint32
default: 32
minimum: 1
maximum: 32
interrupts:
description: |
The interrupts to the parent controller raised when GPIOs generate
the interrupts. If the controller provides one combined interrupt
for all GPIOs, specify a single interrupt. If the controller provides
one interrupt for each GPIO, provide a list of interrupts that
correspond to each of the GPIO pins.
minItems: 1
maxItems: 32
interrupt-controller: true
'#interrupt-cells':
const: 2
required:
- compatible
- reg
- gpio-controller
- '#gpio-cells'
dependencies:
interrupt-controller: [ interrupts ]
additionalProperties: false
additionalProperties: false
required:
- compatible
- reg
- "#address-cells"
- "#size-cells"
examples:
- |
gpio: gpio@20000 {
compatible = "snps,dw-apb-gpio";
reg = <0x20000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
porta: gpio-port@0 {
compatible = "snps,dw-apb-gpio-port";
reg = <0>;
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <8>;
interrupt-controller;
#interrupt-cells = <2>;
interrupt-parent = <&vic1>;
interrupts = <0>;
};
portb: gpio-port@1 {
compatible = "snps,dw-apb-gpio-port";
reg = <1>;
gpio-controller;
#gpio-cells = <2>;
snps,nr-gpios = <8>;
};
};
...
|
