self._id = pin_id
 
     def __repr__(self):
-        # pylint: disable=import-outside-toplevel
+        # pylint: disable=import-outside-toplevel, cyclic-import
         import board
 
         for key in dir(board):
                 return "board.{}".format(key)
         import microcontroller.pin as pin
 
-        # pylint: enable=import-outside-toplevel
+        # pylint: enable=import-outside-toplevel, cyclic-import
 
         for key in dir(pin):
             if getattr(pin, key) is self:
     from adafruit_blinka.microcontroller.allwinner.a33.pin import *
 elif chip_id == ap_chip.RK3308:
     from adafruit_blinka.microcontroller.rockchip.rk3308.pin import *
+elif chip_id == ap_chip.RK3399:
+    from adafruit_blinka.microcontroller.rockchip.rk3399.pin import *
 elif chip_id == ap_chip.H5:
     from adafruit_blinka.microcontroller.allwinner.h5.pin import *
 elif chip_id == ap_chip.IMX8MX: