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-rw-r--r--host/include/uhd/types/clock_config.hpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/host/include/uhd/types/clock_config.hpp b/host/include/uhd/types/clock_config.hpp
index 42d74ad90..9342fbb7b 100644
--- a/host/include/uhd/types/clock_config.hpp
+++ b/host/include/uhd/types/clock_config.hpp
@@ -29,6 +29,7 @@ namespace uhd{
*/
struct UHD_API clock_config_t{
enum ref_source_t {
+ REF_AUTO = 'a', //automatic (device specific)
REF_INT = 'i', //internal reference
REF_SMA = 's', //external sma port
REF_MIMO = 'm' //mimo cable (usrp2 only)