xref: /linux/Documentation/devicetree/bindings/usb/ti,usb8020b.yaml (revision 7255fcc80d4b525cc10cfaaf7f485830d4ed2000) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/usb/ti,usb8020b.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: TI USB8020B USB 3.0 hub controller
8
9maintainers:
10  - Macpaul Lin <macpaul.lin@mediatek.com>
11
12allOf:
13  - $ref: usb-device.yaml#
14
15properties:
16  compatible:
17    enum:
18      - usb451,8025
19      - usb451,8027
20
21  reg: true
22
23  reset-gpios:
24    items:
25      - description: GPIO specifier for GRST# pin.
26
27  vdd-supply:
28    description:
29      VDD power supply to the hub
30
31  peer-hub:
32    $ref: /schemas/types.yaml#/definitions/phandle
33    description:
34      phandle to the peer hub on the controller.
35
36required:
37  - compatible
38  - reg
39  - peer-hub
40
41additionalProperties: false
42
43examples:
44  - |
45    #include <dt-bindings/gpio/gpio.h>
46
47    usb {
48        dr_mode = "host";
49        #address-cells = <1>;
50        #size-cells = <0>;
51
52        /* 2.0 hub on port 1 */
53        hub_2_0: hub@1 {
54          compatible = "usb451,8027";
55          reg = <1>;
56          peer-hub = <&hub_3_0>;
57          reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>;
58          vdd-supply = <&usb_hub_fixed_3v3>;
59        };
60
61        /* 3.0 hub on port 2 */
62        hub_3_0: hub@2 {
63          compatible = "usb451,8025";
64          reg = <2>;
65          peer-hub = <&hub_2_0>;
66          reset-gpios = <&pio 7 GPIO_ACTIVE_HIGH>;
67          vdd-supply = <&usb_hub_fixed_3v3>;
68        };
69    };
70