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-rw-r--r--share/man/man4/ehci.46
1 files changed, 5 insertions, 1 deletions
diff --git a/share/man/man4/ehci.4 b/share/man/man4/ehci.4
index ea99a9da6166..8e97b9b240fe 100644
--- a/share/man/man4/ehci.4
+++ b/share/man/man4/ehci.4
@@ -80,7 +80,11 @@ The
device driver first appeared in
.Fx 5.1 .
.Sh LOADER TUNABLES
-Tunables can be set at the
+When the kernel has been compiled with
+.Cd options USB_DEBUG ,
+some tunables become available that affect the behavior of
+.Nm .
+These tunables can be set at the
.Xr loader 8
prompt before booting the kernel or stored in
.Xr loader.conf 5 .