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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/gpio/xlnx,gpio-xilinx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx AXI GPIO controller
maintainers:
- Neeli Srinivas <srinivas.neeli@xilinx.com>
description:
The AXI GPIO design provides a general purpose input/output interface
to an AXI4-Lite interface. The AXI GPIO can be configured as either
a single or a dual-channel device. The width of each channel is
independently configurable. The channels can be configured to
generate an interrupt when a transition on any of their inputs occurs.
properties:
compatible:
enum:
- xlnx,xps-gpio-1.00.a
reg:
maxItems: 1
"#gpio-cells":
const: 2
interrupts:
maxItems: 1
gpio-controller: true
gpio-line-names:
description: strings describing the names of each gpio line
minItems: 1
maxItems: 64
interrupt-controller: true
"#interrupt-cells":
const: 2
clocks:
maxItems: 1
interrupt-names: true
xlnx,all-inputs:
$ref: /schemas/types.yaml#/definitions/uint32
description: This option sets this GPIO channel1 bits in input mode.
xlnx,all-inputs-2:
$ref: /schemas/types.yaml#/definitions/uint32
description: This option sets this GPIO channel2 bits in input mode.
xlnx,all-outputs:
$ref: /schemas/types.yaml#/definitions/uint32
description: This option sets this GPIO channel1 bits in output mode.
xlnx,all-outputs-2:
$ref: /schemas/types.yaml#/definitions/uint32
description: This option sets this GPIO channel2 bits in output mode.
xlnx,dout-default:
$ref: /schemas/types.yaml#/definitions/uint32
description: Sets the default value of all the enabled bits of
channel1.
default: 0
xlnx,dout-default-2:
$ref: /schemas/types.yaml#/definitions/uint32
description: Sets the default value of all the enabled bits of
channel2.
default: 0
xlnx,gpio-width:
$ref: /schemas/types.yaml#/definitions/uint32
description: The value defines the bit width of the GPIO channel1.
minimum: 1
maximum: 32
default: 32
xlnx,gpio2-width:
$ref: /schemas/types.yaml#/definitions/uint32
description: The value defines the bit width of the GPIO channel2.
minimum: 1
maximum: 32
default: 32
xlnx,interrupt-present:
$ref: /schemas/types.yaml#/definitions/uint32
description: This parameter enables interrupt control logic
and interrupt registers in GPIO module.
minimum: 0
maximum: 1
default: 0
xlnx,is-dual:
$ref: /schemas/types.yaml#/definitions/uint32
description: This parameter enables a second GPIO channel (GPIO2).
minimum: 0
maximum: 1
default: 0
xlnx,tri-default:
$ref: /schemas/types.yaml#/definitions/uint32
description: This value configures the input or output mode
of each bit of GPIO channel1.
xlnx,tri-default-2:
$ref: /schemas/types.yaml#/definitions/uint32
description: This value configures the input or output mode
of each bit of GPIO channel2.
required:
- reg
- compatible
- gpio-controller
- "#gpio-cells"
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
gpio@a0020000 {
compatible = "xlnx,xps-gpio-1.00.a";
reg = <0xa0020000 0x10000>;
#gpio-cells = <2>;
#interrupt-cells = <0x2>;
clocks = <&zynqmp_clk 71>;
gpio-controller;
interrupt-controller;
interrupt-names = "ip2intc_irpt";
interrupt-parent = <&gic>;
interrupts = <0 89 4>;
xlnx,all-inputs = <0x0>;
xlnx,all-inputs-2 = <0x0>;
xlnx,all-outputs = <0x0>;
xlnx,all-outputs-2 = <0x0>;
xlnx,dout-default = <0x0>;
xlnx,dout-default-2 = <0x0>;
xlnx,gpio-width = <0x20>;
xlnx,gpio2-width = <0x20>;
xlnx,interrupt-present = <0x1>;
xlnx,is-dual = <0x1>;
xlnx,tri-default = <0xFFFFFFFF>;
xlnx,tri-default-2 = <0xFFFFFFFF>;
};
...
|
