Update i2c frequency

components/display/ssd1306_i2c.rst

@@ -61,6 +61,10 @@ Configuration variables:
 - **update_interval** (*Optional*, :ref:`config-time`): The interval to re-draw the screen. Defaults to ``5s``.
 - **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for code generation.
 
+.. note::
+
+    To speed up the display update process you can select higher i2c frequencies.
+
 See Also
 --------
 

components/i2c.rst

@@ -33,6 +33,7 @@ Configuration variables:
   Note that this can slow down startup and is only recommended for when setting up new sensors. Defaults to
   ``False``.
 - **frequency** (*Optional*, float): Set the frequency the i²c bus should operate on.
+  Defaults to ``50KHz``. Values are ``50KHz``, ``100KHz``, ``200KHz``, ... ``800KHz``
 
 .. note::