mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-03 18:10:13 +00:00
f4917b4933
The struct is only used to overlay the MMIO region, so the behavior is the same. This obsoletes the Kconfig option for the number of ports. Signed-off-by: Samuel Holland <samuel@sholland.org>
29 lines
824 B
Text
29 lines
824 B
Text
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
|
|
|
|
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.
|
|
|