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Notes on the the generic USB-OHCI driver
========================================
This driver (drivers/usb/usb_ohci.[ch]) is the result of the merge of
various existing OHCI drivers that were basically identical beside
cpu/board dependant initalization. This initalization has been moved
into cpu/board directories and are called via the hooks below.
Configuration options
----------------------
CONFIG_USB_OHCI_NEW: enable the new OHCI driver
CONFIG_SYS_USB_OHCI_REGS_BASE: defines the base address of the OHCI
registers
CONFIG_SYS_USB_OHCI_SLOT_NAME: slot name
CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS: maximal number of ports of the
root hub.
Endianness issues
------------------
The USB bus operates in little endian, but unfortunately there are
OHCI controllers that operate in big endian such as ppc4xx. For these the
config option
CONFIG_SYS_OHCI_BE_CONTROLLER
needs to be defined.
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