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/1692C.pdf
Signed-off-by: Richard Leitner
---
Documentation/devicetree/bindings/usb/usb251xb.txt | 83 +++
MAINTAINERS| 8 +
drivers/usb/misc/Kconfig | 9 +
drivers/usb/misc/Makefile | 1 +
drivers/usb/misc/usb251xb.c| 757 +
include/linux/platform_data/usb251xb.h | 33 +
6 files changed, 891 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/usb251xb.txt
create mode 100644 drivers/usb/misc/usb251xb.c
create mode 100644 include/linux/platform_data/usb251xb.h
diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt
b/Documentation/devicetree/bindings/usb/usb251xb.txt
new file mode 100644
index 000..9496b06
--- /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 0x)
+ - 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-power : 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-power : 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
+
