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# 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:
3V3 power supply to the hub
vdd2-supply:
description:
1V2 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
vdd2-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>;
};
};
|
