update documentation on the depth option for fabric hierarchy writer

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Xifan Tang 2020-05-05 16:44:07 -06:00 committed by tangxifan
parent 5a8c05378e
commit 24934aff86
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@ -108,6 +108,8 @@ Setup OpenFPGA
- ``--file`` or ``-f`` Specify the file name to write the hierarchy.
- ``--depth`` Specify at which depth of the fabric module graph should the writer stop outputting. The root module start from depth 0. For example, if you want a two-level hierarchy, you should specify depth as 1.
- ``--verbose`` Show verbose log
.. note:: This file is designed for hierarchical PnR flow, which requires the tree of Multiple-Instanced-Blocks (MIBs).