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 c44c5014743e614990fa280a581acbf0b757180b..147ea514ae92c26127244e323408f1540cd0d71d 100644 (file)
--- a/doc/README.generic_usb_ohci
+++ b/doc/README.generic_usb_ohci
@@ -51,6 +51,12 @@ You'll need to define
 
        CONFIG_PCI_OHCI
 
+If you have several USB PCI controllers, define
+
+       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: