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-rw-r--r--host/lib/usrp/usrp2/clock_control.hpp6
1 files changed, 6 insertions, 0 deletions
diff --git a/host/lib/usrp/usrp2/clock_control.hpp b/host/lib/usrp/usrp2/clock_control.hpp
index 366e09c28..4302941f0 100644
--- a/host/lib/usrp/usrp2/clock_control.hpp
+++ b/host/lib/usrp/usrp2/clock_control.hpp
@@ -47,6 +47,12 @@ public:
virtual void enable_tx_dboard_clock(bool enb) = 0;
/*!
+ * Enable/disable external reference.
+ * \param enb true to enable
+ */
+ virtual void enable_external_ref(bool enb) = 0;
+
+ /*!
* TODO other clock control api here....
*/