IXP: enable RTS
enables the RTS signal with CONFIG_SERIAL_RTS_ACTIVE.
No handshaking is done, but the active RTS signal allows to
connect to the target using a PC which is using RTS/CTS
handshake, and does no harm if the PC is set to ignore RTS.
Signed-off-by: Michael Schwingen <michael@schwingen.org>
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 @@
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;
}