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Diffstat (limited to 'Documentation/devicetree/bindings/usb/usb251xb.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/usb251xb.txt | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt new file mode 100644 index 000000000..1a934eab1 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb251xb.txt @@ -0,0 +1,89 @@ +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", "microchip,usb2422" + - reg : I2C address on the selected bus (default is <0x2C>) + +Optional properties : + - reset-gpios : Should specify the gpio for hub reset + - vdd-supply : Should specify the phandle to the regulator supplying vdd + - 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>; + }; |