README.generic_usb_ohci 821 B

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  1. Notes on the the generic USB-OHCI driver
  2. ========================================
  3. This driver (drivers/usb/usb_ohci.[ch]) is the result of the merge of
  4. various existing OHCI drivers that were basically identical beside
  5. cpu/board dependant initalization. This initalization has been moved
  6. into cpu/board directories and are called via the hooks below.
  7. Configuration options
  8. ----------------------
  9. CONFIG_USB_OHCI_NEW: enable the new OHCI driver
  10. CFG_SYS_USB_OHCI_REGS_BASE: defines the base address of the OHCI
  11. registers
  12. CONFIG_SYS_USB_OHCI_SLOT_NAME: slot name
  13. Endianness issues
  14. ------------------
  15. The USB bus operates in little endian, but unfortunately there are
  16. OHCI controllers that operate in big endian such as ppc4xx. For these the
  17. config option
  18. CONFIG_SYS_OHCI_BE_CONTROLLER
  19. needs to be defined.