Skip to content

sky130hd/uW: remove custom MPL configs and increase density #3561

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
maliberty merged 2 commits into from
Oct 9, 2025
Merged

sky130hd/uW: remove custom MPL configs and increase density #3561

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
e6ad5cd
sky130hd/uW: remove custom MPL configs and increase density
AcKoucher Oct 8, 2025
77cc877
update metrics for removal of custom MPL configs
AcKoucher Oct 8, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 2 additions & 14 deletions flow/designs/sky130hd/microwatt/config.mk
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,21 +21,9 @@ export ADDITIONAL_LIBS = $(wildcard $(microwatt_DIR)/lib/*.lib)

export SYNTH_HIERARCHICAL = 1

export MACRO_PLACE_HALO = 100 100
export PLACE_DENSITY = 0.3

# We use large placement blockages to try eliminating the channels between
# RAMs in order to make that space inaccessible for GPL. Experiments have
# showed that connections crossing the RAMs vertically can be painful to
# route.
export MACRO_BLOCKAGE_HALO = 151

# There's less space due to the adapted blockage halos, so GPL requires a
# higher density in order to run.
export PLACE_DENSITY = 0.2

# Extra effort to ease routing: avoid very tall std cell clusters in MPL.
export RTLMP_MIN_AR = 0.40
export RTLMP_NOTCH_WT = 20.0
export MACRO_PLACE_HALO = 60 60

# CTS tuning
export CTS_BUF_DISTANCE = 600
Expand Down