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Diffstat (limited to 'Documentation/devicetree/bindings/usb/usb251xb.txt')
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diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt new file mode 100644 index 000000000000..0c065f77658f --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb251xb.txt @@ -0,0 +1,83 @@ +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"; + }; |