Is there a way to install open pdks sky130 with just the spi

Question

Is there a way to install open pdks sky130 with just the spice files Or should I just be cloning sky130 fd pr directly if I don t care about the rest of the stuff IIRC open pdks has some patches to the spice files which are hopefully being upstreamed

Matthew Guthaus · Answer

Yes open pdks has important fixes to the spice models

John Simons · Answer

and open pdks has disable X options to disable indidividual options I think that way you can enable spice only

Mayank Gupta · Answer

I have used the spice model files of the sky130 pdk with ltspice If you just need the spice model files and don t care about the rest just download the openpdk folder with model files and use them Specifically the model files that are given in the library folder

Pepijn de Vos · Answer

Why have these important fixes not been upstreamed

Pepijn de Vos · Answer

Looking at open pdks it makes extensive changes to the upstream pdk Why are these changes not contributed back upstream I would just like to use the spice files without installing GBs of digital stuff but if the upstream spice files are broken this seems like a bad situation <https github com RTimothyEdwards open pdks blob 7519dfb04400f224f140749cda44ee7de6f5e095 sky130 Makefile in L1011 L1102>

Keno Fischer · Answer

< Tim mithro Ansell> Can you elaborate on the plan for the upstream PDK repo Seems like fixes are accumulating in various places outside of it Wouldn t it be better to just use the upstream repo here

Tim Edwards · Answer

< Pepijn de Vos> Sorry I didn t see this thread For your initial question Is there a way After a full configuration of open pdks instead of doing `make` you can do `cd sky130` and start building just the parts you need which would mainly be `make tools A` and `make primitive A` and or `B`

Tim Edwards · Answer

< Pepijn de Vos> The only way to delete the installed PDK is with `make uninstall` so if after doing that partial build you do `make install` if you have pre installed libraries from a previous build they ll still be there You ll have just updated `libs tech` with the `make tools ` and `libs ref sky130 fd pr` with the `make primitive `