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-rw-r--r--sys/dev/ic/ns16550.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/ic/ns16550.h b/sys/dev/ic/ns16550.h
index 3a94d634b4a5..29a73a018619 100644
--- a/sys/dev/ic/ns16550.h
+++ b/sys/dev/ic/ns16550.h
@@ -45,8 +45,13 @@
#define IER_ETXRDY 0x2
#define IER_ERLS 0x4
#define IER_EMSC 0x8
+/*
+ * Receive timeout interrupt enable.
+ * Implemented in Intel XScale, Ingenic XBurst.
+ */
+#define IER_RXTMOUT 0x10
-#define IER_BITS "\20\1ERXRDY\2ETXRDY\3ERLS\4EMSC"
+#define IER_BITS "\20\1ERXRDY\2ETXRDY\3ERLS\4EMSC\5RXTMOUT"
#define com_iir 2 /* interrupt identification register (R) */
#define REG_IIR com_iir