[doc] update options for pcf2place command
@@ -292,6 +292,10 @@ pcf2place
Specify the path to the placement file which will be outputted by running this command
+ .. option:: --pin_table_direction_convention <string>
+
+ Specify the naming convention for ports in pin table files from which pin direction can be inferred. Can be [``explicit``|``quicklogic``]. When ``explicit`` is selected, pin direction is inferred based on the explicit definition in a column of pin table file, e.g., GPIO direction (see details in :ref:`file_format_pin_table_file`). When ``quicklogic`` is selected, pin direction is inferred by port name: a port whose postfix is ``_A2F`` is an input, while a port whose postfix is ``_A2F`` is an output. By default, it is ``explicit``.
+
.. option:: --no_time_stamp
Do not print time stamp in bitstream files
