xref: /linux/Documentation/devicetree/bindings/usb/usb-drd.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/usb/usb-drd.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Generic USB OTG Controller
8
9maintainers:
10  - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11
12properties:
13  otg-rev:
14    description:
15      Tells usb driver the release number of the OTG and EH supplement with
16      which the device and its descriptors are compliant, in binary-coded
17      decimal (i.e. 2.0 is 0200H). This property is used if any real OTG
18      features (HNP/SRP/ADP) is enabled. If ADP is required, otg-rev should be
19      0x0200 or above.
20    $ref: /schemas/types.yaml#/definitions/uint32
21    enum: [0x0100, 0x0120, 0x0130, 0x0200]
22
23  dr_mode:
24    description:
25      Tells Dual-Role USB controllers that we want to work on a particular
26      mode. In case this attribute isn't passed via DT, USB DRD controllers
27      should default to OTG.
28    $ref: /schemas/types.yaml#/definitions/string
29    enum: [host, peripheral, otg]
30    default: otg
31
32  hnp-disable:
33    description:
34      Tells OTG controllers we want to disable OTG HNP. Normally HNP is the
35      basic function of real OTG except you want it to be a srp-capable only B
36      device.
37    type: boolean
38
39  srp-disable:
40    description:
41      Tells OTG controllers we want to disable OTG SRP. SRP is optional for OTG
42      device.
43    type: boolean
44
45  adp-disable:
46    description:
47      Tells OTG controllers we want to disable OTG ADP. ADP is optional for OTG
48      device.
49    type: boolean
50
51  usb-role-switch:
52    description:
53      Indicates that the device is capable of assigning the USB data role
54      (USB host or USB device) for a given USB connector, such as Type-C,
55      Type-B(micro). See connector/usb-connector.yaml.
56
57  role-switch-default-mode:
58    description:
59      Indicates if usb-role-switch is enabled, the device default operation
60      mode of controller while usb role is USB_ROLE_NONE.
61    $ref: /schemas/types.yaml#/definitions/string
62    enum: [host, peripheral]
63    default: peripheral
64
65additionalProperties: true
66
67examples:
68  - |
69    usb@4a030000 {
70        compatible = "snps,dwc3";
71        reg = <0x4a030000 0xcfff>;
72        interrupts = <0 92 4>;
73        usb-phy = <&usb2_phy>, <&usb3_phy>;
74        maximum-speed = "super-speed";
75        dr_mode = "otg";
76        phy_type = "utmi_wide";
77        otg-rev = <0x0200>;
78        adp-disable;
79    };
80