Documentation/devicetree/bindings/usb/ti,usb8020b.yaml

   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
   7 title: TI USB8020B USB 3.0 hub controller
   8
   9 maintainers:
  10   - Macpaul Lin <macpaul.lin@mediatek.com>
  11
  12 allOf:
  13   - $ref: usb-device.yaml#
  14
  15 properties:
  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
  36 required:
  37   - compatible
  38   - reg
  39   - peer-hub
  40
  41 additionalProperties: false
  42
  43 examples:
  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     };