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Add support for MMCM #1468

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mkurc-ant opened this issue May 6, 2020 · 3 comments
Closed

Add support for MMCM #1468

mkurc-ant opened this issue May 6, 2020 · 3 comments

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@mkurc-ant
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Xilinx 7-series FPGAs have PLLs (PLLE2_ADV) and MMCMs (MMCME2_ADV). Both have the same function though MMCMs have some additional features.

Currently SymbiFlow has support only for PLLs. Adding support for MMCMs would require duplicating and augmenting what's done for PLLs. All bits for MMCMs should be known but it has to be double- checked.
@litghost
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litghost commented Oct 2, 2020

PR opened for unknown bits: f4pga/prjxray#1447

arch-def side of this is still needed.

@mkurc-ant
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A WIP PR to arch-defs: #1729

@mkurc-ant
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#1729 has been merged. Closing

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@litghost @mkurc-ant