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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/usb/microchip,usb5744.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Microchip USB5744 4-port Hub Controller8 9description:10 Microchip's USB5744 SmartHubTM IC is a 4 port, SuperSpeed (SS)/Hi-Speed (HS),11 low power, low pin count configurable and fully compliant with the USB 3.112 Gen 1 specification. The USB5744 also supports Full Speed (FS) and Low Speed13 (LS) USB signaling, offering complete coverage of all defined USB operating14 speeds. The new SuperSpeed hubs operate in parallel with the USB 2.015 controller, so 5 Gbps SuperSpeed data transfers are not affected by slower16 USB 2.0 traffic.17 18maintainers:19 - Michal Simek <michal.simek@amd.com>20 - Mubin Sayyed <mubin.sayyed@amd.com>21 - Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>22 23properties:24 compatible:25 enum:26 - usb424,274427 - usb424,574428 - microchip,usb574429 30 reg:31 maxItems: 132 33 reset-gpios:34 maxItems: 135 description:36 GPIO controlling the GRST# pin.37 38 vdd-supply:39 description:40 3V3 power supply to the hub41 42 vdd2-supply:43 description:44 1V2 power supply to the hub45 46 peer-hub:47 $ref: /schemas/types.yaml#/definitions/phandle48 description:49 phandle to the peer hub on the controller.50 51 i2c-bus:52 $ref: /schemas/types.yaml#/definitions/phandle53 description:54 phandle of an usb hub connected via i2c bus.55 56required:57 - compatible58 - reg59 60allOf:61 - if:62 properties:63 compatible:64 contains:65 const: microchip,usb574466 then:67 properties:68 reset-gpios: false69 vdd-supply: false70 vdd2-supply: false71 peer-hub: false72 i2c-bus: false73 else:74 $ref: /schemas/usb/usb-device.yaml75 76additionalProperties: false77 78examples:79 - |80 #include <dt-bindings/gpio/gpio.h>81 i2c: i2c {82 #address-cells = <1>;83 #size-cells = <0>;84 hub: usb-hub@2d {85 compatible = "microchip,usb5744";86 reg = <0x2d>;87 };88 };89 90 usb {91 #address-cells = <1>;92 #size-cells = <0>;93 94 /* 2.0 hub on port 1 */95 hub_2_0: hub@1 {96 compatible = "usb424,2744";97 reg = <1>;98 peer-hub = <&hub_3_0>;99 i2c-bus = <&hub>;100 reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>;101 };102 103 /* 3.0 hub on port 2 */104 hub_3_0: hub@2 {105 compatible = "usb424,5744";106 reg = <2>;107 peer-hub = <&hub_2_0>;108 i2c-bus = <&hub>;109 reset-gpios = <&gpio 3 GPIO_ACTIVE_LOW>;110 };111 };112