diff --git a/adafruit_gizmo/tft_gizmo.py b/adafruit_gizmo/tft_gizmo.py
index 159fe2e..9baaea5 100755
--- a/adafruit_gizmo/tft_gizmo.py
+++ b/adafruit_gizmo/tft_gizmo.py
@@ -40,20 +40,15 @@
 class TFT_Gizmo(ST7789):
     """Class representing a TFT Gizmo."""
 
-    def __init__(self, *, spi=None, cs=None, dc=None, backlight=None):
+    def __init__(self, *, spi=None, cs=board.RX, dc=board.TX,
+                 backlight=board.A3, rotation=180):
         displayio.release_displays()
         if spi is None:
             import busio
             spi = busio.SPI(board.SCL, MOSI=board.SDA)
-        if cs is None:
-            cs = board.RX
-        if dc is None:
-            dc = board.TX
-        if backlight is None:
-            backlight = board.A3
         self._display_bus = displayio.FourWire(spi,
                                                command=dc,
                                                chip_select=cs)
         super().__init__(self._display_bus, width=240, height=240,
                          rowstart=80, backlight_pin=backlight,
-                         rotation=180)
+                         rotation=rotation)
diff --git a/docs/conf.py b/docs/conf.py
index 057dfb0..984e87a 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -20,7 +20,7 @@
 # Uncomment the below if you use native CircuitPython modules such as
 # digitalio, micropython and busio. List the modules you use. Without it, the
 # autodoc module docs will fail to generate with a warning.
-autodoc_mock_imports = ["adafruit_st7789", "digitalio", "busio", "displayio"]
+autodoc_mock_imports = ["adafruit_st7789", "digitalio", "busio", "displayio", "board"]
 
 
 intersphinx_mapping = {'python': ('https://docs.python.org/3.4', None),'BusDevice': ('https://circuitpython.readthedocs.io/projects/busdevice/en/latest/', None),'CircuitPython': ('https://circuitpython.readthedocs.io/en/latest/', None)}