CC2640R2F: Is there any way to get beacon device RSSI by DEVICE'S NAME or MAC directly and not scan other bt devices?

We use "simple_peripheral_observer" example to get the RSSI of the beacon we specify. But every time it start scanning, it search for a lot of Bluetooth devices at the beginning, and it takes a long time to search for the beacon devices that we specify. Is there any way to scan beacon device and get the RSSI  by DEVICE'S NAME or MAC, so that we can get RSSI of the specified beacon more quickly  and more power savings.