Monday, 2025-04-28

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adehop[m]lofty: Not yet, i gave it a try now but ran into timing issues, i need to check that later. Is there a description of the options (despite --help)?17:09
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dandersonI wrote https://blog.dave.tf/post/ecp5-pll/ about configuring the ECP5's PLL primitive, in (I think?) more detail than exists elsewhere. I think at least some of this should live upstream somewhere. Should I try to upstream to yosys? nextpnr? prjtrellis? other? none?19:48
tpbTitle: Configuring the Lattice ECP5 PLL ยท blog.dave.tf (at blog.dave.tf)19:48
dandersonI'm hesitant because documenting hardware primitives sounds like a prjtrellis thing. But this is specifically about instantiating the EHXPLLL techlib primitive, which is more of a yosys thing. But afaict yosys doesn't seem to carry documentation about specific targets, but I don't know if that's intentional or just "nobody's done it yet".19:50

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