Kernel-4.18.0-80.el8_usb251xb

Microchip USB 2.0 Hi-Speed Hub Controller

The device node for the configuration of a Microchip USB251x/xBi USB 2.0
Hi-Speed Controller.

Required properties :

• compatible : Should be “microchip,usb251xb” or one of the specific types:
  “microchip,usb2512b”, “microchip,usb2512bi”, “microchip,usb2513b”,
  “microchip,usb2513bi”, “microchip,usb2514b”, “microchip,usb2514bi”,
  “microchip,usb2517”, “microchip,usb2517i”
• reg : I2C address on the selected bus (default is <0x2C>)

Optional properties :

• reset-gpios : Should specify the gpio for hub reset
• skip-config : Skip Hub configuration, but only send the USB-Attach command
• vendor-id : Set USB Vendor ID of the hub (16 bit, default is 0x0424)
• product-id : Set USB Product ID of the hub (16 bit, default depends on type)
• device-id : Set USB Device ID of the hub (16 bit, default is 0x0bb3)
• language-id : Set USB Language ID (16 bit, default is 0x0000)
• manufacturer : Set USB Manufacturer string (max 31 characters long)
• product : Set USB Product string (max 31 characters long)
• serial : Set USB Serial string (max 31 characters long)
• {bus,self}-powered : selects between self- and bus-powered operation
  (boolean, default is self-powered)
• disable-hi-speed : disable USB Hi-Speed support (boolean)
• {multi,single}-tt : selects between multi- and single-transaction-translator
  (boolean, default is multi-tt)
• disable-eop : disable End of Packet generation in full-speed mode (boolean)
• {ganged,individual}-sensing : select over-current sense type in self-powered
  mode (boolean, default is individual)
• {ganged,individual}-port-switching : select port power switching mode
  (boolean, default is individual)
• dynamic-power-switching : enable auto-switching from self- to bus-powered
  operation if the local power source is removed or unavailable (boolean)
• oc-delay-us : Delay time (in microseconds) for filtering the over-current
  sense inputs. Valid values are 100, 4000, 8000 (default) and 16000. If
  an invalid value is given, the default is used instead.
• compound-device : indicate the hub is part of a compound device (boolean)
• port-mapping-mode : enable port mapping mode (boolean)
• led-{usb,speed}-mode : led usb/speed indication mode selection
  (boolean, default is speed mode)
• string-support : enable string descriptor support (required for manufacturer,
  product and serial string configuration)
• non-removable-ports : Should specify the ports which have a non-removable
  device connected.
• sp-disabled-ports : Specifies the ports which will be self-power disabled
• bp-disabled-ports : Specifies the ports which will be bus-power disabled
• sp-max-total-current-microamp: Specifies max current consumed by the hub
  from VBUS when operating in self-powered hub. It includes the hub
  silicon along with all associated circuitry including a permanently
  attached peripheral (range: 0 - 100000 uA, default 1000 uA)
• bp-max-total-current-microamp: Specifies max current consumed by the hub
  from VBUS when operating in self-powered hub. It includes the hub
  silicon along with all associated circuitry including a permanently
  attached peripheral (range: 0 - 510000 uA, default 100000 uA)
• sp-max-removable-current-microamp: Specifies max current consumed by the hub
  from VBUS when operating in self-powered hub. It includes the hub
  silicon along with all associated circuitry excluding a permanently
  attached peripheral (range: 0 - 100000 uA, default 1000 uA)
• bp-max-removable-current-microamp: Specifies max current consumed by the hub
  from VBUS when operating in self-powered hub. It includes the hub
  silicon along with all associated circuitry excluding a permanently
  attached peripheral (range: 0 - 510000 uA, default 100000 uA)
• power-on-time-ms : Specifies the time it takes from the time the host
  initiates the power-on sequence to a port until the port has adequate
  power. The value is given in ms in a 0 - 510 range (default is 100ms).

Examples:
usb2512b@2c {
compatible = “microchip,usb2512b”;
reg = <0x2c>;
reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
};

usb2514b@2c {
    compatible = "microchip,usb2514b";
    reg = <0x2c>;
    vendor-id = /bits/ 16 <0x0000>;
    product-id = /bits/ 16 <0x0000>;
    string-support;
    manufacturer = "Foo";
    product = "Foo-Bar";
    serial = "1234567890A";
};