update openfpga architecture README for power-gating
@@ -23,5 +23,6 @@ Note that an OpenFPGA architecture can be applied to multiple VPR architecture f
- stdcell: If circuit designs are built with standard cells only
- tree\_mux: If routing multiplexers are built with a tree-like structure
- <feature_size>: The technology node which the delay numbers are extracted from.
+- powergate : The FPGA has power-gating techniques applied. If not defined, there is no power-gating.
Other features are used in naming should be listed here.
