545 lines
17 KiB
YAML
545 lines
17 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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$id: http://devicetree.org/schemas/phy/nvidia,tegra186-xusb-padctl.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NVIDIA Tegra186 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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const: nvidia,tegra186-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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interrupts:
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items:
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- description: XUSB pad controller interrupt
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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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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-pll-erefeut-supply:
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description: UPHY brick and reference clock as well as UTMI PHY
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power supply. Must supply 1.8 V.
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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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vddio-hsic-supply:
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description: HSIC PHY power supply. Must supply 1.2 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 be 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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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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hsic:
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type: object
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additionalProperties: false
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properties:
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clocks:
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items:
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- description: HSIC tracking clock
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clock-names:
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items:
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- const: trk
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lanes:
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type: object
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additionalProperties: false
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properties:
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hsic-0:
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type: object
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additionalProperties: false
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properties:
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"#phy-cells":
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const: 0
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nvidia,function:
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description: Function selection for this lane.
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$ref: /schemas/types.yaml#/definitions/string
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enum: [ xusb ]
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usb3:
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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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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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hsic-0:
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type: object
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additionalProperties: false
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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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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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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [ 0, 1, 2, 3 ]
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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usb3-1:
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type: object
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additionalProperties: false
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properties:
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$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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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [ 0, 1, 2, 3 ]
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vbus-supply:
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description: A phandle to the regulator supplying the VBUS
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voltage.
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usb3-2:
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type: object
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additionalProperties: false
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properties:
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nvidia,internal:
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description: A boolean property whose presence determines
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that a port is internal. In the absence of this property
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the port is considered to be external.
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$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
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voltage.
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additionalProperties: false
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required:
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- compatible
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- reg
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- resets
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- reset-names
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- avdd-pll-erefeut-supply
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- avdd-usb-supply
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- vclamp-usb-supply
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- vddio-hsic-supply
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examples:
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- |
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#include <dt-bindings/clock/tegra186-clock.h>
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#include <dt-bindings/gpio/tegra186-gpio.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/reset/tegra186-reset.h>
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padctl@3520000 {
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compatible = "nvidia,tegra186-xusb-padctl";
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reg = <0x03520000 0x1000>,
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<0x03540000 0x1000>;
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reg-names = "padctl", "ao";
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interrupts = <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>;
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resets = <&bpmp TEGRA186_RESET_XUSB_PADCTL>;
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reset-names = "padctl";
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avdd-pll-erefeut-supply = <&vdd_1v8_pll>;
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avdd-usb-supply = <&vdd_3v3_sys>;
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vclamp-usb-supply = <&vdd_1v8>;
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vddio-hsic-supply = <&gnd>;
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pads {
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usb2 {
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clocks = <&bpmp TEGRA186_CLK_USB2_TRK>;
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clock-names = "trk";
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lanes {
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usb2-0 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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usb2-1 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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usb2-2 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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};
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};
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hsic {
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clocks = <&bpmp TEGRA186_CLK_HSIC_TRK>;
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clock-names = "trk";
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status = "disabled";
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lanes {
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hsic-0 {
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status = "disabled";
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#phy-cells = <0>;
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};
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};
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};
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usb3 {
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lanes {
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usb3-0 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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usb3-1 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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usb3-2 {
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nvidia,function = "xusb";
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#phy-cells = <0>;
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};
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};
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};
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};
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ports {
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usb2-0 {
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mode = "otg";
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vbus-supply = <&vdd_usb0>;
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usb-role-switch;
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connector {
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compatible = "gpio-usb-b-connector",
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"usb-b-connector";
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label = "micro-USB";
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type = "micro";
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vbus-gpios = <&gpio TEGRA186_MAIN_GPIO(X, 7) GPIO_ACTIVE_LOW>;
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id-gpios = <&pmic 0 GPIO_ACTIVE_HIGH>;
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};
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};
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usb2-1 {
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vbus-supply = <&vdd_usb1>;
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mode = "host";
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};
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usb2-2 {
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status = "disabled";
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};
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hsic-0 {
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status = "disabled";
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};
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||
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usb3-0 {
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nvidia,usb2-companion = <1>;
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};
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||
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usb3-1 {
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status = "disabled";
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};
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||
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usb3-2 {
|
||
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status = "disabled";
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||
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};
|
||
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};
|
||
|
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};
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