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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).
- swap-dx-lanes : Specifies the ports which will swap the differential-pair
(D+/D-), default is not-swapped.
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";
/* correct misplaced usb connectors on port 1,2 */
swap-dx-lanes = <1 2>;
};
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