multi_usrp_rfnoc: Reduce latency of get_time_now()

Getting the time from the mb_controller is slow, so try to get the time
from the Radio on the fast path first.

Signed-off-by: michael-west <michael.west@ettus.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/host/lib/rfnoc/radio_control_impl.cpp b/host/lib/rfnoc/radio_control_impl.cpp
index 53117176b..5bc16f7cd 100644
--- a/host/lib/rfnoc/radio_control_impl.cpp
+++ b/host/lib/rfnoc/radio_control_impl.cpp
@@ -302,7 +302,7 @@ uint64_t radio_control_impl::get_ticks_now()
 {
     // Time registers added in 0.1
     if (_fpga_compat < 1) {
-        throw uhd::not_implemented_error("Radio does not support time readback");
+        return get_mb_controller()->get_timekeeper(0)->get_ticks_now();
     }
     return regs().peek64(regmap::REG_TIME_LO);
 }