-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
usb: misc: add USB251xB/xBi Hi-Speed Hub Controller Driver
This patch adds a driver for configuration of the Microchip USB251xB/xBi USB 2.0 hub controller series with USB 2.0 upstream connectivity, SMBus configuration interface and two to four USB 2.0 downstream ports. Furthermore add myself as a maintainer for this driver. The datasheet can be found at the manufacturers website, see [1]. All device-tree exposed configuration features have been tested on a i.MX6 platform with a USB2512B hub. [1] http://ww1.microchip.com/downloads/en/DeviceDoc/00001692C.pdf Signed-off-by: Richard Leitner <richard.leitner@skidata.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Loading branch information
Richard Leitner
authored and
Greg Kroah-Hartman
committed
Feb 14, 2017
1 parent
ef5ec7f
commit 3ec72a2
Showing
5 changed files
with
706 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -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"; | ||
| }; |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.