108 lines
2.5 KiB
YAML
108 lines
2.5 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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$id: http://devicetree.org/schemas/usb/microchip,usb5744.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Microchip USB5744 4-port Hub Controller
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description:
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Microchip's USB5744 SmartHubTM IC is a 4 port, SuperSpeed (SS)/Hi-Speed (HS),
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low power, low pin count configurable and fully compliant with the USB 3.1
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Gen 1 specification. The USB5744 also supports Full Speed (FS) and Low Speed
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(LS) USB signaling, offering complete coverage of all defined USB operating
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speeds. The new SuperSpeed hubs operate in parallel with the USB 2.0
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controller, so 5 Gbps SuperSpeed data transfers are not affected by slower
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USB 2.0 traffic.
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maintainers:
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- Piyush Mehta <piyush.mehta@amd.com>
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- Michal Simek <michal.simek@amd.com>
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properties:
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compatible:
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enum:
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- usb424,2744
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- usb424,5744
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- microchip,usb5744
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reg:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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description:
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GPIO controlling the GRST# pin.
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vdd-supply:
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description:
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VDD power supply to the hub
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peer-hub:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle to the peer hub on the controller.
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i2c-bus:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle of an usb hub connected via i2c bus.
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required:
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- compatible
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- reg
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allOf:
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- if:
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properties:
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compatible:
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contains:
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const: microchip,usb5744
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then:
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properties:
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reset-gpios: false
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vdd-supply: false
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peer-hub: false
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i2c-bus: false
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else:
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$ref: /schemas/usb/usb-device.yaml
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required:
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- peer-hub
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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i2c: i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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hub: usb-hub@2d {
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compatible = "microchip,usb5744";
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reg = <0x2d>;
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};
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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 = "usb424,2744";
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reg = <1>;
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peer-hub = <&hub_3_0>;
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i2c-bus = <&hub>;
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reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
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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 = "usb424,5744";
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reg = <2>;
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peer-hub = <&hub_2_0>;
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i2c-bus = <&hub>;
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reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
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};
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};
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