633 lines
21 KiB
YAML
633 lines
21 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/phy/nvidia,tegra194-xusb-padctl.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NVIDIA Tegra194 XUSB pad controller
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maintainers:
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- Thierry Reding <thierry.reding@gmail.com>
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- Jon Hunter <jonathanh@nvidia.com>
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description: |
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The Tegra XUSB pad controller manages a set of I/O lanes (with differential
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signals) which connect directly to pins/pads on the SoC package. Each lane
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is controlled by a HW block referred to as a "pad" in the Tegra hardware
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documentation. Each such "pad" may control either one or multiple lanes,
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and thus contains any logic common to all its lanes. Each lane can be
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separately configured and powered up.
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Some of the lanes are high-speed lanes, which can be used for PCIe, SATA or
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super-speed USB. Other lanes are for various types of low-speed, full-speed
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or high-speed USB (such as UTMI, ULPI and HSIC). The XUSB pad controller
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contains a software-configurable mux that sits between the I/O controller
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ports (e.g. PCIe) and the lanes.
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In addition to per-lane configuration, USB 3.0 ports may require additional
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settings on a per-board basis.
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Pads will be represented as children of the top-level XUSB pad controller
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device tree node. Each lane exposed by the pad will be represented by its
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own subnode and can be referenced by users of the lane using the standard
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PHY bindings, as described by the phy-bindings.txt file in this directory.
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The Tegra hardware documentation refers to the connection between the XUSB
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pad controller and the XUSB controller as "ports". This is confusing since
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"port" is typically used to denote the physical USB receptacle. The device
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tree binding in this document uses the term "port" to refer to the logical
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abstraction of the signals that are routed to a USB receptacle (i.e. a PHY
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for the USB signal, the VBUS power supply, the USB 2.0 companion port for
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USB 3.0 receptacles, ...).
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properties:
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compatible:
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enum:
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- nvidia,tegra194-xusb-padctl
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- nvidia,tegra234-xusb-padctl
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reg:
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items:
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- description: pad controller registers
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- description: AO registers
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reg-names:
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items:
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- const: padctl
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- const: ao
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interrupts:
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items:
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- description: XUSB pad controller interrupt
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resets:
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items:
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- description: pad controller reset
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reset-names:
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items:
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- const: padctl
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avdd-usb-supply:
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description: USB I/Os, VBUS, ID, REXT, D+/D- power supply. Must
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supply 3.3 V.
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vclamp-usb-supply:
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description: Bias rail for USB pad. Must supply 1.8 V.
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pads:
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description: A required child node named "pads" contains a list of
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subnodes, one for each of the pads exposed by the XUSB pad controller.
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Each pad may need additional resources that can be referenced in its
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pad node.
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The "status" property is used to enable or disable the use of a pad.
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If set to "disabled", the pad will not be used on the given board. In
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order to use the pad and any of its lanes, this property must be set
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to "okay" or absent.
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type: object
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additionalProperties: false
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properties:
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usb2:
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type: object
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additionalProperties: false
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properties:
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clocks:
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items:
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- description: USB2 tracking clock
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clock-names:
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items:
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- const: trk
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lanes:
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type: object
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additionalProperties: false
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properties:
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usb2-0:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb2-1:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb2-2:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb2-3:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb3:
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type: object
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additionalProperties: false
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properties:
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lanes:
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type: object
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additionalProperties: false
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properties:
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usb3-0:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb3-1:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb3-2:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb3-3:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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ports:
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description: A required child node named "ports" contains a list of
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subnodes, one for each of the ports exposed by the XUSB pad controller.
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Each port may need additional resources that can be referenced in its
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port node.
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The "status" property is used to enable or disable the use of a port.
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If set to "disabled", the port will not be used on the given board. In
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order to use the port, this property must be set to "okay".
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type: object
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additionalProperties: false
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properties:
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usb2-0:
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type: object
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additionalProperties: false
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properties:
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# no need to further describe this because the connector will
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# match on gpio-usb-b-connector or usb-b-connector and cause
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# that binding to be selected for the subnode
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connector:
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type: object
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mode:
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description: A string that determines the mode in which to
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run the port.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ host, peripheral, otg ]
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$ref: /schemas/types.yaml#/definitions/flag
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usb-role-switch:
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description: |
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A boolean property whole presence indicates that the port
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supports OTG or peripheral mode. If present, the port
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supports switching between USB host and peripheral roles.
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A connector must be added as a subnode in that case.
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See ../connector/usb-connector.yaml.
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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dependencies:
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usb-role-switch: [ connector ]
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usb2-1:
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type: object
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additionalProperties: false
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properties:
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# no need to further describe this because the connector will
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# match on gpio-usb-b-connector or usb-b-connector and cause
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# that binding to be selected for the subnode
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connector:
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type: object
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mode:
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description: A string that determines the mode in which to
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run the port.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ host, peripheral, otg ]
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$ref: /schemas/types.yaml#/definitions/flag
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usb-role-switch:
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description: |
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A boolean property whole presence indicates that the port
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supports OTG or peripheral mode. If present, the port
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supports switching between USB host and peripheral roles.
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A connector must be added as a subnode in that case.
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See ../connector/usb-connector.yaml.
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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dependencies:
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usb-role-switch: [ connector ]
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usb2-2:
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type: object
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additionalProperties: false
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properties:
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# no need to further describe this because the connector will
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# match on gpio-usb-b-connector or usb-b-connector and cause
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# that binding to be selected for the subnode
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connector:
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type: object
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mode:
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description: A string that determines the mode in which to
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run the port.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ host, peripheral, otg ]
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$ref: /schemas/types.yaml#/definitions/flag
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usb-role-switch:
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description: |
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A boolean property whole presence indicates that the port
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supports OTG or peripheral mode. If present, the port
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supports switching between USB host and peripheral roles.
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A connector must be added as a subnode in that case.
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See ../connector/usb-connector.yaml.
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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dependencies:
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usb-role-switch: [ connector ]
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usb2-3:
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type: object
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additionalProperties: false
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properties:
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# no need to further describe this because the connector will
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# match on gpio-usb-b-connector or usb-b-connector and cause
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# that binding to be selected for the subnode
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connector:
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type: object
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mode:
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description: A string that determines the mode in which to
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run the port.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ host, peripheral, otg ]
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$ref: /schemas/types.yaml#/definitions/flag
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usb-role-switch:
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description: |
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A boolean property whole presence indicates that the port
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supports OTG or peripheral mode. If present, the port
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supports switching between USB host and peripheral roles.
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A connector must be added as a subnode in that case.
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See ../connector/usb-connector.yaml.
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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dependencies:
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usb-role-switch: [ connector ]
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usb3-0:
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type: object
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additionalProperties: false
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properties:
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maximum-speed:
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description: A string property that specifies the maximum
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supported speed of a USB3 port.
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$ref: /schemas/types.yaml#/definitions/string
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oneOf:
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- description: The USB3 port supports USB 3.1 Gen 2 speed.
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This is the default.
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const: super-speed-plus
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- description: The USB3 port supports USB 3.1 Gen 1 speed
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only.
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const: super-speed
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$ref: /schemas/types.yaml#/definitions/flag
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nvidia,usb2-companion:
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description: A single cell that specifies the physical port
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number to map this super-speed USB port to. The range of
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valid port numbers varies with the SoC generation.
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||
|
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [ 0, 1, 2, 3 ]
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vbus-supply:
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|
|
description: A phandle to the regulator supplying the VBUS
|
||
|
|
voltage.
|
||
|
|
|
||
|
|
usb3-1:
|
||
|
|
type: object
|
||
|
|
additionalProperties: false
|
||
|
|
properties:
|
||
|
|
maximum-speed:
|
||
|
|
description: A string property that specifies the maximum
|
||
|
|
supported speed of a USB3 port.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/string
|
||
|
|
oneOf:
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 2 speed.
|
||
|
|
This is the default.
|
||
|
|
const: super-speed-plus
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 1 speed
|
||
|
|
only.
|
||
|
|
const: super-speed
|
||
|
|
|
||
|
|
nvidia,internal:
|
||
|
|
description: A boolean property whose presence determines
|
||
|
|
that a port is internal. In the absence of this property
|
||
|
|
the port is considered to be external.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
|
||
|
|
nvidia,usb2-companion:
|
||
|
|
description: A single cell that specifies the physical port
|
||
|
|
number to map this super-speed USB port to. The range of
|
||
|
|
valid port numbers varies with the SoC generation.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
||
|
|
enum: [ 0, 1, 2, 3 ]
|
||
|
|
|
||
|
|
vbus-supply:
|
||
|
|
description: A phandle to the regulator supplying the VBUS
|
||
|
|
voltage.
|
||
|
|
|
||
|
|
usb3-2:
|
||
|
|
type: object
|
||
|
|
additionalProperties: false
|
||
|
|
properties:
|
||
|
|
maximum-speed:
|
||
|
|
description: A string property that specifies the maximum
|
||
|
|
supported speed of a USB3 port.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/string
|
||
|
|
oneOf:
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 2 speed.
|
||
|
|
This is the default.
|
||
|
|
const: super-speed-plus
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 1 speed
|
||
|
|
only.
|
||
|
|
const: super-speed
|
||
|
|
|
||
|
|
nvidia,internal:
|
||
|
|
description: A boolean property whose presence determines
|
||
|
|
that a port is internal. In the absence of this property
|
||
|
|
the port is considered to be external.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
|
||
|
|
nvidia,usb2-companion:
|
||
|
|
description: A single cell that specifies the physical port
|
||
|
|
number to map this super-speed USB port to. The range of
|
||
|
|
valid port numbers varies with the SoC generation.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
||
|
|
enum: [ 0, 1, 2, 3 ]
|
||
|
|
|
||
|
|
vbus-supply:
|
||
|
|
description: A phandle to the regulator supplying the VBUS
|
||
|
|
voltage.
|
||
|
|
|
||
|
|
usb3-3:
|
||
|
|
type: object
|
||
|
|
additionalProperties: false
|
||
|
|
properties:
|
||
|
|
maximum-speed:
|
||
|
|
description: A string property that specifies the maximum
|
||
|
|
supported speed of a USB3 port.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/string
|
||
|
|
oneOf:
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 2 speed.
|
||
|
|
This is the default.
|
||
|
|
const: super-speed-plus
|
||
|
|
- description: The USB3 port supports USB 3.1 Gen 1 speed
|
||
|
|
only.
|
||
|
|
const: super-speed
|
||
|
|
|
||
|
|
nvidia,internal:
|
||
|
|
description: A boolean property whose presence determines
|
||
|
|
that a port is internal. In the absence of this property
|
||
|
|
the port is considered to be external.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
|
||
|
|
nvidia,usb2-companion:
|
||
|
|
description: A single cell that specifies the physical port
|
||
|
|
number to map this super-speed USB port to. The range of
|
||
|
|
valid port numbers varies with the SoC generation.
|
||
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
||
|
|
enum: [ 0, 1, 2, 3 ]
|
||
|
|
|
||
|
|
vbus-supply:
|
||
|
|
description: A phandle to the regulator supplying the VBUS
|
||
|
|
voltage.
|
||
|
|
|
||
|
|
additionalProperties: false
|
||
|
|
|
||
|
|
required:
|
||
|
|
- compatible
|
||
|
|
- reg
|
||
|
|
- resets
|
||
|
|
- reset-names
|
||
|
|
- avdd-usb-supply
|
||
|
|
- vclamp-usb-supply
|
||
|
|
|
||
|
|
examples:
|
||
|
|
- |
|
||
|
|
#include <dt-bindings/clock/tegra194-clock.h>
|
||
|
|
#include <dt-bindings/gpio/tegra194-gpio.h>
|
||
|
|
#include <dt-bindings/interrupt-controller/arm-gic.h>
|
||
|
|
#include <dt-bindings/reset/tegra194-reset.h>
|
||
|
|
|
||
|
|
padctl@3520000 {
|
||
|
|
compatible = "nvidia,tegra194-xusb-padctl";
|
||
|
|
reg = <0x03520000 0x1000>,
|
||
|
|
<0x03540000 0x1000>;
|
||
|
|
reg-names = "padctl", "ao";
|
||
|
|
interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
|
||
|
|
|
||
|
|
resets = <&bpmp TEGRA194_RESET_XUSB_PADCTL>;
|
||
|
|
reset-names = "padctl";
|
||
|
|
|
||
|
|
avdd-usb-supply = <&vdd_usb_3v3>;
|
||
|
|
vclamp-usb-supply = <&vdd_1v8ao>;
|
||
|
|
|
||
|
|
pads {
|
||
|
|
usb2 {
|
||
|
|
clocks = <&bpmp TEGRA194_CLK_USB2_TRK>;
|
||
|
|
clock-names = "trk";
|
||
|
|
|
||
|
|
lanes {
|
||
|
|
usb2-0 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
status = "disabled";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-1 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-2 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
status = "disabled";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-3 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3 {
|
||
|
|
lanes {
|
||
|
|
usb3-0 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-1 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
status = "disabled";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-2 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
status = "disabled";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-3 {
|
||
|
|
nvidia,function = "xusb";
|
||
|
|
#phy-cells = <0>;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
ports {
|
||
|
|
usb2-0 {
|
||
|
|
status = "disabled";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-1 {
|
||
|
|
vbus-supply = <&vdd_5v0_sys>;
|
||
|
|
mode = "host";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-2 {
|
||
|
|
status = "disabled";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb2-3 {
|
||
|
|
vbus-supply = <&vdd_5v_sata>;
|
||
|
|
mode = "host";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-0 {
|
||
|
|
vbus-supply = <&vdd_5v0_sys>;
|
||
|
|
nvidia,usb2-companion = <1>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-1 {
|
||
|
|
status = "disabled";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-2 {
|
||
|
|
status = "disabled";
|
||
|
|
};
|
||
|
|
|
||
|
|
usb3-3 {
|
||
|
|
maximum-speed = "super-speed";
|
||
|
|
vbus-supply = <&vdd_5v0_sys>;
|
||
|
|
nvidia,usb2-companion = <3>;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
};
|