# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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# Copyright 2019 Linaro Ltd.
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/misc/hisilicon-hikey-usb.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: HiKey960 onboard USB GPIO Hub
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maintainers:
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- John Stultz <john.stultz@linaro.org>
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description: |
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Supports the onboard HiKey960 USB GPIO hub, which acts as a
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role-switch intermediary to detect the state of the USB-C
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port, to switch the hub into dual-role USB-C or host mode,
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which enables the onboard USB-A host ports.
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Schematics about the hub can be found here:
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https://github.com/96boards/documentation/raw/master/consumer/hikey/hikey960/hardware-docs/HiKey960_Schematics.pdf
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properties:
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compatible:
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items:
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- const: hisilicon,gpio_hubv1
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typec-vbus-gpios:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: phandle to the typec-vbus gpio
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otg-switch-gpios:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: phandle to the otg-switch gpio
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hub-vdd33-en-gpios:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: phandle to the hub 3.3v power enablement gpio
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usb-role-switch:
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$ref: /schemas/types.yaml#/definitions/flag
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description: Support role switch.
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port:
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description: |
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any connector to the data bus of this controller should be modelled
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using the OF graph bindings specified, if the "usb-role-switch"
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property is used. Note for this driver, two ports are supported,
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the first being the endpoint that will be notified by this driver,
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and the second being the endpoint that notifies this driver of a
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role switch.
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required:
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- compatible
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- typec-vbus-gpios
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- otg-switch-gpios
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- hub-vdd33-en-gpios
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- usb-role-switch
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- port
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additionalProperties: false
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examples:
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- |
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hisi_hikey_usb: hisi_hikey_usb {
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compatible = "hisilicon,gpio_hubv1";
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typec-vbus-gpios = <&gpio25 2 GPIO_ACTIVE_HIGH>;
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otg-switch-gpios = <&gpio25 6 GPIO_ACTIVE_HIGH>;
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hub-vdd33-en-gpios = <&gpio5 6 GPIO_ACTIVE_HIGH>;
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usb-role-switch;
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port {
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#address-cells = <1>;
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#size-cells = <0>;
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hikey_usb_ep0: endpoint@0 {
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reg = <0>;
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remote-endpoint = <&dwc3_role_switch>;
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};
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hikey_usb_ep1: endpoint@1 {
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reg = <1>;
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remote-endpoint = <&rt1711h_ep>;
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};
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};
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};
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