Commit 40e58a8a authored by Alexander Stein's avatar Alexander Stein Committed by Greg Kroah-Hartman
Browse files

dt-bindings: usb: Add binding for TI USB8041 hub controller 



The TI USB8041 is a USB 3.0 hub controller with 4 ports.

This initial version of the binding only describes USB related aspects
of the USB8041, it does not cover the option of connecting the controller
as an i2c slave.

Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarAlexander Stein <alexander.stein@ew.tq-group.com>
Link: https://lore.kernel.org/r/20220727093801.687361-1-alexander.stein@ew.tq-group.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 76e96059

Documentation/devicetree/bindings/usb/ti,usb8041.yaml

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# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/usb/ti,usb8041.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Binding for the TI USB8041 USB 3.0 hub controller



maintainers:

  - Alexander Stein <alexander.stein@ew.tq-group.com>



allOf:

  - $ref: usb-device.yaml#



properties:

  compatible:

    enum:

      - usb451,8140

      - usb451,8142



  reg: true



  reset-gpios:

    items:

      - description: GPIO specifier for GRST# pin.



  vdd-supply:

    description:

      VDD power supply to the hub



  peer-hub:

    $ref: /schemas/types.yaml#/definitions/phandle

    description:

      phandle to the peer hub on the controller.



required:

  - compatible

  - reg

  - peer-hub



additionalProperties: false



examples:

  - |

    #include <dt-bindings/gpio/gpio.h>



    usb {

        dr_mode = "host";

        #address-cells = <1>;

        #size-cells = <0>;



        /* 2.0 hub on port 1 */

        hub_2_0: hub@1 {

          compatible = "usb451,8142";

          reg = <1>;

          peer-hub = <&hub_3_0>;

          reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;

        };



        /* 3.0 hub on port 2 */

        hub_3_0: hub@2 {

          compatible = "usb451,8140";

          reg = <2>;

          peer-hub = <&hub_2_0>;

          reset-gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;

        };

    };