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caravel-mpw7-20221125
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litedram-update
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4 Commits (cb4451498f313b96e55e7916510bfa03e4b94a2e)

Author SHA1 Message Date
Benjamin Herrenschmidt 9961d70dfb Improve PLL/MMCM clocks configuration 
We can now pass both the input clock and target clock frequency
via generics. Add support for both 50Mhz and 100Mhz target freqs
for both cases.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 6 years ago
Benjamin Herrenschmidt 79b0b9a046 Fix PLL reset signal name in toplevel 
It shouldn't have a _n suffix, it's active positive.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 6 years ago
Benjamin Herrenschmidt 3ac1dbc737 Share soc.vhdl between FPGA and sim 
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 6 years ago
Benjamin Herrenschmidt a69a93b466 Split FPGA toplevel from soc 
This will be useful when we start needing different toplevels for
different boards.

We keep the reset and clock generators in the toplevel as they will
eventually be taken over by litedram when we integrate it, and they
are more likely to change on different system types.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
 6 years ago