USB: add support for multiple PCI OHCI controllers

[karo-tx-uboot.git] / doc / README.generic_usb_ohci

diff --git a/doc/README.generic_usb_ohci b/doc/README.generic_usb_ohci
index c343dfdf90af41c74b738e214703d03564361ae4..147ea514ae92c26127244e323408f1540cd0d71d 100644 (file)
--- a/doc/README.generic_usb_ohci
+++ b/doc/README.generic_usb_ohci
@@ -1,7 +1,7 @@
 Notes on the the generic USB-OHCI driver
 ========================================
 
-This driver (drivers/usb_ohci.[ch]) is the result of the merge of
+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.
@@ -41,7 +41,7 @@ mpc5xxx. For these the config option
 
        CFG_OHCI_BE_CONTROLLER
 
-needs to be defined. 
+needs to be defined.
 
 
 PCI Controllers
@@ -51,10 +51,13 @@ You'll need to define
 
        CONFIG_PCI_OHCI
 
-PCI Controllers need to do byte swapping on register accesses, so they
-should to define:
+If you have several USB PCI controllers, define
 
-       CFG_OHCI_SWAP_REG_ACCESS
+       CONFIG_PCI_OHCI_DEVNO: number of the OHCI device in PCI list
 
+If undefined, the first instance found in PCI space will be used.
 
+PCI Controllers need to do byte swapping on register accesses, so they
+should to define:
 
+       CFG_OHCI_SWAP_REG_ACCESS