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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/usb/usb-drd.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Generic USB OTG Controller
maintainers:
- Greg Kroah-Hartman <gregkh@linuxfoundation.org>
properties:
otg-rev:
description:
Tells usb driver the release number of the OTG and EH supplement with
which the device and its descriptors are compliant, in binary-coded
decimal (i.e. 2.0 is 0200H). This property is used if any real OTG
features (HNP/SRP/ADP) is enabled. If ADP is required, otg-rev should be
0x0200 or above.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0x0100, 0x0120, 0x0130, 0x0200]
dr_mode:
description:
Tells Dual-Role USB controllers that we want to work on a particular
mode. In case this attribute isn't passed via DT, USB DRD controllers
should default to OTG.
$ref: /schemas/types.yaml#/definitions/string
enum: [host, peripheral, otg]
hnp-disable:
description:
Tells OTG controllers we want to disable OTG HNP. Normally HNP is the
basic function of real OTG except you want it to be a srp-capable only B
device.
type: boolean
srp-disable:
description:
Tells OTG controllers we want to disable OTG SRP. SRP is optional for OTG
device.
type: boolean
adp-disable:
description:
Tells OTG controllers we want to disable OTG ADP. ADP is optional for OTG
device.
type: boolean
usb-role-switch:
description:
Indicates that the device is capable of assigning the USB data role
(USB host or USB device) for a given USB connector, such as Type-C,
Type-B(micro). See connector/usb-connector.yaml.
role-switch-default-mode:
description:
Indicates if usb-role-switch is enabled, the device default operation
mode of controller while usb role is USB_ROLE_NONE.
$ref: /schemas/types.yaml#/definitions/string
enum: [host, peripheral]
default: peripheral
additionalProperties: true
examples:
- |
usb@4a030000 {
compatible = "snps,dwc3";
reg = <0x4a030000 0xcfff>;
interrupts = <0 92 4>;
usb-phy = <&usb2_phy>, <&usb3_phy>;
maximum-speed = "super-speed";
dr_mode = "otg";
phy_type = "utmi_wide";
otg-rev = <0x0200>;
adp-disable;
};
|
