diff --git a/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.cpp b/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.cpp
index 7734724b12..896003d73e 100644
--- a/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.cpp
+++ b/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.cpp
@@ -41,4 +41,16 @@ MSPCommandResult AP_MSP_Telem_DisplayPort::msp_process_out_fc_variant(sbuf_t *ds
     return MSP_RESULT_ACK;
 }
 
+bool AP_MSP_Telem_DisplayPort::init_uart()
+{
+    if (_msp_port.uart != nullptr)  {
+        // re-init port here for use in this thread
+        // displayport needs a bigger tx buffer
+        // rx buffer can be small for we mostly write
+        _msp_port.uart->begin(0, 256, 768);
+        return true;
+    }
+    return false;
+}
+
 #endif //HAL_WITH_MSP_DISPLAYPORT
diff --git a/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.h b/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.h
index 45b9bf5273..825e81622f 100644
--- a/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.h
+++ b/libraries/AP_MSP/AP_MSP_Telem_DisplayPort.h
@@ -26,6 +26,7 @@ class AP_MSP_Telem_DisplayPort : public AP_MSP_Telem_Backend
 public:
     bool is_scheduler_enabled() const override { return false; }
     bool use_msp_thread() const override { return false; }
+    bool init_uart() override;
     AP_SerialManager::SerialProtocol get_serial_protocol() const override { return AP_SerialManager::SerialProtocol::SerialProtocol_MSP_DisplayPort; };
 
     MSP::MSPCommandResult msp_process_out_fc_variant(MSP::sbuf_t *dst) override;