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-rw-r--r--sys/conf/NOTES14
1 files changed, 8 insertions, 6 deletions
diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index ed944942551d..b80df3581fb1 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -1846,13 +1846,15 @@ device puc
# MII bus support is required for many PCI Ethernet NICs,
# namely those which use MII-compliant transceivers or implement
# transceiver control interfaces that operate like an MII. Adding
-# "device miibus" to the kernel config pulls in support for
-# the generic miibus API and all of the PHY drivers, including a
-# generic one for PHYs that aren't specifically handled by an
-# individual driver. Support for specific PHYs may be built by adding
-# "device mii" then adding the appropriate PHY driver.
-device miibus # MII support including all PHYs
+# "device miibus" to the kernel config pulls in support for the generic
+# miibus API, the common support for for bit-bang'ing the MII and all
+# of the PHY drivers, including a generic one for PHYs that aren't
+# specifically handled by an individual driver. Support for specific
+# PHYs may be built by adding "device mii", "device mii_bitbang" if
+# needed by the NIC driver and then adding the appropriate PHY driver.
device mii # Minimal MII support
+device mii_bitbang # Common module for bit-bang'ing the MII
+device miibus # MII support w/ bit-bang'ing and all PHYs
device acphy # Altima Communications AC101
device amphy # AMD AM79c873 / Davicom DM910{1,2}