1 Notes on the the generic USB-OHCI driver
2 ========================================
4 This driver (drivers/usb_ohci.[ch]) is the result of the merge of
5 various existing OHCI drivers that were basically identical beside
6 cpu/board dependant initalization. This initalization has been moved
7 into cpu/board directories and are called via the hooks below.
10 ----------------------
12 CONFIG_USB_OHCI_NEW: enable the new OHCI driver
14 CFG_USB_OHCI_BOARD_INIT: call the board dependant hooks:
16 - extern int usb_board_init(void);
17 - extern int usb_board_stop(void);
18 - extern int usb_cpu_init_fail(void);
20 CFG_USB_OHCI_CPU_INIT: call the cpu dependant hooks:
22 - extern int usb_cpu_init(void);
23 - extern int usb_cpu_stop(void);
24 - extern int usb_cpu_init_fail(void);
26 CFG_USB_OHCI_REGS_BASE: defines the base address of the OHCI registers
28 CFG_USB_OHCI_SLOT_NAME: slot name
30 CFG_USB_OHCI_MAX_ROOT_PORTS: maximal number of ports of the root hub.
36 The LITTLEENDIAN #define determines if the 'swap_16' and 'swap_32'
37 macros do byte swapping or not. But some cpus OHCI-controllers such as
38 ppc4xx and mpc5xxx operate in little endian mode, so some extra ifdefs
39 were necessary to make this work.