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-rw-r--r--cpu/ixp/serial.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/cpu/ixp/serial.c b/cpu/ixp/serial.c
index cf520b6..4549631 100644
--- a/cpu/ixp/serial.c
+++ b/cpu/ixp/serial.c
@@ -58,7 +58,11 @@ void serial_setbrg (void)
DLL(uart) = quot & 0xff;
DLH(uart) = quot >> 8;
LCR(uart) = LCR_WLS0 | LCR_WLS1;
-
+#ifdef CONFIG_SERIAL_RTS_ACTIVE
+ MCR(uart) = MCR_RTS; /* set RTS active */
+#else
+ MCR(uart) = 0; /* set RTS inactive */
+#endif
IER(uart) = IER_UUE;
}