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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright (c) 2020 Facebook Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/aspeed,usb-vhub.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ASPEED USB 2.0 Virtual Hub Controller
maintainers:
- Benjamin Herrenschmidt <benh@kernel.crashing.org>
description: |+
The ASPEED USB 2.0 Virtual Hub Controller implements 1 set of USB Hub
register and several sets of Device and Endpoint registers to support
the Virtual Hub's downstream USB devices.
Supported number of devices and endpoints vary depending on hardware
revisions. AST2400 and AST2500 Virtual Hub supports 5 downstream devices
and 15 generic endpoints, while AST2600 Virtual Hub supports 7 downstream
devices and 21 generic endpoints.
properties:
compatible:
enum:
- aspeed,ast2400-usb-vhub
- aspeed,ast2500-usb-vhub
- aspeed,ast2600-usb-vhub
reg:
maxItems: 1
clocks:
maxItems: 1
interrupts:
maxItems: 1
aspeed,vhub-downstream-ports:
description: Number of downstream ports supported by the Virtual Hub
$ref: /schemas/types.yaml#/definitions/uint32
default: 5
minimum: 1
maximum: 7
aspeed,vhub-generic-endpoints:
description: Number of generic endpoints supported by the Virtual Hub
$ref: /schemas/types.yaml#/definitions/uint32
default: 15
minimum: 1
maximum: 21
vhub-vendor-id:
description: vhub Vendor ID
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 65535
vhub-product-id:
description: vhub Product ID
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 65535
vhub-device-revision:
description: vhub Device Revision in binary-coded decimal
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 65535
vhub-strings:
type: object
properties:
'#address-cells':
const: 1
'#size-cells':
const: 0
patternProperties:
'^string@[0-9a-f]+$':
type: object
description: string descriptors of the specific language
properties:
reg:
maxItems: 1
description: 16-bit Language Identifier defined by USB-IF
manufacturer:
description: vhub manufacturer
$ref: /schemas/types.yaml#/definitions/string
product:
description: vhub product name
$ref: /schemas/types.yaml#/definitions/string
serial-number:
description: vhub device serial number
$ref: /schemas/types.yaml#/definitions/string
required:
- compatible
- reg
- clocks
- interrupts
- aspeed,vhub-downstream-ports
- aspeed,vhub-generic-endpoints
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/aspeed-clock.h>
vhub: usb-vhub@1e6a0000 {
compatible = "aspeed,ast2500-usb-vhub";
reg = <0x1e6a0000 0x300>;
interrupts = <5>;
clocks = <&syscon ASPEED_CLK_GATE_USBPORT1CLK>;
aspeed,vhub-downstream-ports = <5>;
aspeed,vhub-generic-endpoints = <15>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usb2ad_default>;
vhub-vendor-id = <0x1d6b>;
vhub-product-id = <0x0107>;
vhub-device-revision = <0x0100>;
vhub-strings {
#address-cells = <1>;
#size-cells = <0>;
string@409 {
reg = <0x409>;
manufacturer = "ASPEED";
product = "USB Virtual Hub";
serial-number = "0000";
};
};
};
|
