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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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7fcdfaf372
Introduce a general USB hub binding that describes downstream ports and hard wired USB devices for on-board USB hubs. Signed-off-by: Pin-yen Lin <treapking@chromium.org> Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250422082957.2058229-2-treapking@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
85 lines
1.9 KiB
YAML
85 lines
1.9 KiB
YAML
# 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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$id: http://devicetree.org/schemas/usb/usb-hub.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic USB Hub
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maintainers:
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- Pin-yen Lin <treapking@chromium.org>
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allOf:
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- $ref: usb-device.yaml#
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properties:
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'#address-cells':
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const: 1
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peer-hub:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle to the peer hub on the controller.
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ports:
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$ref: /schemas/graph.yaml#/properties/ports
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description:
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The downstream facing USB ports
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patternProperties:
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"^port@[1-9a-f][0-9a-f]*$":
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$ref: /schemas/graph.yaml#/properties/port
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patternProperties:
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'^.*@[1-9a-f][0-9a-f]*$':
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description: The hard wired USB devices
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type: object
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$ref: /schemas/usb/usb-device.yaml
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additionalProperties: true
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required:
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- compatible
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- reg
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additionalProperties: true
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examples:
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- |
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usb {
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#address-cells = <1>;
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#size-cells = <0>;
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/* 2.0 hub on port 1 */
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hub_2_0: hub@1 {
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compatible = "usb123,4567";
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reg = <1>;
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peer-hub = <&hub_3_0>;
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#address-cells = <1>;
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#size-cells = <0>;
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/* USB 2.0 device on port 5 */
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device@5 {
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reg = <5>;
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compatible = "usb765,4321";
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};
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};
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/* 3.0 hub on port 2 */
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hub_3_0: hub@2 {
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compatible = "usb123,abcd";
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reg = <2>;
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peer-hub = <&hub_2_0>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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/* Type-A connector on port 3 */
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port@3 {
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reg = <3>;
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endpoint {
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remote-endpoint = <&usb_a0_ss>;
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};
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};
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};
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};
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};
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