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-rw-r--r--doc/README.generic_usb_ohci6
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/README.generic_usb_ohci b/doc/README.generic_usb_ohci
index c44c501..147ea51 100644
--- 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: