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Microchip USB 2.0 Hi-Speed Hub Controller
The device node for the configuration of a Microchip USB251xB/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"
- hub-reset-gpios : Should specify the gpio for hub reset
Optional properties :
- reg : I2C address on the selected bus (default is <0x2C>)
- skip-config : Skip Hub configuration, but only send the USB-Attach command
- vendor-id : USB Vendor ID of the hub (16 bit, default is 0x0424)
- product-id : USB Product ID of the hub (16 bit, default depends on type)
- device-id : USB Device ID of the hub (16 bit, default is 0x0bb3)
- language-id : USB Language ID (16 bit, default is 0x0000)
- manufacturer : USB Manufacturer string (max 31 characters long)
- product : USB Product string (max 31 characters long)
- serial : USB Serial string (max 31 characters long)
- {bus,self}-powered : selects between self- and bus-powered operation (default
is self-powered)
- disable-hi-speed : disable USB Hi-Speed support
- {multi,single}-tt : selects between multi- and single-transaction-translator
(default is multi-tt)
- disable-eop : disable End of Packet generation in full-speed mode
- {ganged,individual}-sensing : select over-current sense type in self-powered
mode (default is individual)
- {ganged,individual}-port-switching : select port power switching mode
(default is individual)
- dynamic-power-switching : enable auto-switching from self- to bus-powered
operation if the local power source is removed or unavailable
- oc-delay-{100us,4ms,8ms,16ms} : set over current timer delay (default is 8ms)
- compound-device : indicated the hub is part of a compound device
- port-mapping-mode : enable port mapping 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
- max-sp-power : Specifies the maximum current the hub consumes from an
upstream port when operating as self-powered hub including the power
consumption of a permanently attached peripheral if the hub is
configured as a compound device. The value is given in mA in a 0 - 500
range (default is 2).
- max-bp-power : Specifies the maximum current the hub consumes from an
upstream port when operating as bus-powered hub including the power
consumption of a permanently attached peripheral if the hub is
configured as a compound device. The value is given in mA in a 0 - 500
range (default is 100).
- max-sp-current : Specifies the maximum current the hub consumes from an
upstream port when operating as self-powered hub EXCLUDING the power
consumption of a permanently attached peripheral if the hub is
configured as a compound device. The value is given in mA in a 0 - 500
range (default is 2).
- max-bp-current : Specifies the maximum current the hub consumes from an
upstream port when operating as bus-powered hub EXCLUDING the power
consumption of a permanently attached peripheral if the hub is
configured as a compound device. The value is given in mA in a 0 - 500
range (default is 100).
- power-on-time : 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";
hub-reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
};
usb2514b@2c {
compatible = "microchip,usb2514b";
reg = <0x2c>;
reset-gpios = <&gpio1 4 GPIO_ACTIVE_LOW>;
vendor-id = /bits/ 16 <0x0000>;
product-id = /bits/ 16 <0x0000>;
string-support;
manufacturer = "Foo";
product = "Foo-Bar";
serial = "1234567890A";
};
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