| commit | 20eb9c78eb4b58820fd38ece3796dd213b2d32d2 | [log] [tgz] |
|---|---|---|
| author | Philipp Wagner <phw@lowrisc.org> | Mon Feb 01 19:00:01 2021 +0000 |
| committer | Philipp Wagner <mail@philipp-wagner.com> | Tue Feb 02 17:13:25 2021 +0000 |
| tree | e0093237c9a71629f123ee52b8cb0b013b218db8 | |
| parent | 243d4a66ec19fca4f0ca8291a48a20bb21d3648b [diff] |
[clkgen] Replace IBUFG with IBUF The IBUFG primitive doesn't exist in 7 series+ devices and is replaced by a normal IBUF during syntheis, as Vivado notes: ``` [Netlist 29-432] The IBUFG primitive 'clkgen/io_clk_ibufg' has been retargeted to an IBUF primitive only. No BUFG will be added. If a global buffer is intended, please instantiate an available global clock primitive from the current architecture. ``` In our case we don't need a global buffer as the output of the IBUF(G) primitive will be fed into a PLL block before being used for logic, and we add appropriate global clock buffers there. Signed-off-by: Philipp Wagner <phw@lowrisc.org>
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