| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/usb/microchip,usb5744.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Microchip USB5744 4-port Hub Controller |
| |
| description: |
| Microchip's USB5744 SmartHubTM IC is a 4 port, SuperSpeed (SS)/Hi-Speed (HS), |
| low power, low pin count configurable and fully compliant with the USB 3.1 |
| Gen 1 specification. The USB5744 also supports Full Speed (FS) and Low Speed |
| (LS) USB signaling, offering complete coverage of all defined USB operating |
| speeds. The new SuperSpeed hubs operate in parallel with the USB 2.0 |
| controller, so 5 Gbps SuperSpeed data transfers are not affected by slower |
| USB 2.0 traffic. |
| |
| maintainers: |
| - Piyush Mehta <piyush.mehta@amd.com> |
| - Michal Simek <michal.simek@amd.com> |
| |
| properties: |
| compatible: |
| enum: |
| - usb424,2744 |
| - usb424,5744 |
| - microchip,usb5744 |
| |
| reg: |
| maxItems: 1 |
| |
| reset-gpios: |
| maxItems: 1 |
| description: |
| GPIO controlling the GRST# pin. |
| |
| vdd-supply: |
| description: |
| VDD power supply to the hub |
| |
| peer-hub: |
| $ref: /schemas/types.yaml#/definitions/phandle |
| description: |
| phandle to the peer hub on the controller. |
| |
| i2c-bus: |
| $ref: /schemas/types.yaml#/definitions/phandle |
| description: |
| phandle of an usb hub connected via i2c bus. |
| |
| required: |
| - compatible |
| - reg |
| |
| allOf: |
| - if: |
| properties: |
| compatible: |
| contains: |
| const: microchip,usb5744 |
| then: |
| properties: |
| reset-gpios: false |
| vdd-supply: false |
| peer-hub: false |
| i2c-bus: false |
| else: |
| $ref: /schemas/usb/usb-device.yaml |
| required: |
| - peer-hub |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| i2c: i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| hub: usb-hub@2d { |
| compatible = "microchip,usb5744"; |
| reg = <0x2d>; |
| }; |
| }; |
| |
| usb { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| /* 2.0 hub on port 1 */ |
| hub_2_0: hub@1 { |
| compatible = "usb424,2744"; |
| reg = <1>; |
| peer-hub = <&hub_3_0>; |
| i2c-bus = <&hub>; |
| reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>; |
| }; |
| |
| /* 3.0 hub on port 2 */ |
| hub_3_0: hub@2 { |
| compatible = "usb424,5744"; |
| reg = <2>; |
| peer-hub = <&hub_2_0>; |
| i2c-bus = <&hub>; |
| reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>; |
| }; |
| }; |
