lowRISC/opentitan

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OpenTitan: Open source silicon root of trust

Stars: 3.6k
Forks: 1.1k
Open beginner issues: 18
Indexed issues: 1.6k
Avg merge: 2d 22h
Merged PRs (30d): 141

Dominant language: SystemVerilog
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted good first issue

Beginner friendly Everything

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1,639 open issues indexed

[englishbreakfast] Fails slang linting Open

TOP:englishbreakfast

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

lowRISC/opentitan#31379 · Opened Sep 18, 2026
[prim] Formality encounters syntax errors Open

Difficulty 2/5 1-3 hours Newbie friendliness 82/100

lowRISC/opentitan#31374 · Opened Sep 18, 2026
[i3c] I3C Target Incompleteness Open

IP:i3c

lowRISC/opentitan#31337 · 1 assignee · Opened Sep 15, 2026
[i3c] Top-level Integration Open

IP:i3c

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lowRISC/opentitan#31336 · Opened Sep 15, 2026
[i3c] Miscellaneous implementation issues Open

IP:i3c

Difficulty 4/5 3-5 days Newbie friendliness 35/100

lowRISC/opentitan#31335 · Opened Sep 15, 2026
[i3c] Check interrupt behavior Open

IP:i3c

lowRISC/opentitan#31334 · 1 assignee · Opened Sep 15, 2026
[i3c] Error detection and handling in the Target Open

IP:i3c

lowRISC/opentitan#31333 · 1 assignee · Opened Sep 15, 2026
[earlgrey_1.0.0] Manufacturing/Provisioning extension documentation is out of date Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

lowRISC/opentitan#31320 · Opened Sep 14, 2026
[i3c/doc] Programmers Guide documentation requires completion Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31317 · Opened Sep 14, 2026
[i3c/doc] Theory of operation requires completion Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31315 · Opened Sep 14, 2026
[clkmgr] jitter_regwen does not block writes to jitter_enable on official CW340 bitstream Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31312 · Opened Sep 14, 2026
[i3c] Standby Controller support Open

lowRISC/opentitan#31308 · 1 assignee · Opened Sep 12, 2026
[i3c] Debug functionality Open

lowRISC/opentitan#31307 · 1 assignee · Opened Sep 12, 2026
spi_device: CSb-deassert race desyncs upload FIFO pointer from DPSRAM data — SW pops stale/phantom flash command during bootstrap Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

lowRISC/opentitan#31306 · Opened Sep 12, 2026
[i3c] Error detection and handling in the Controller Open

lowRISC/opentitan#31305 · 1 assignee · Opened Sep 12, 2026
[i3c] I3C Controller incompleteness Open

lowRISC/opentitan#31304 · 1 comment · 1 assignee · Opened Sep 12, 2026
[rram_ctrl,dv] Rework rram_ctrl_otp_key_driver as a proper UVM agent (sequence item + sequencer) Open

Difficulty 4/5 3-5 days Newbie friendliness 55/100

lowRISC/opentitan#31300 · 1 comment · Opened Sep 11, 2026
[i3c] `RESET_CONTROL.SOFT_RST` does not reset any registers Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

lowRISC/opentitan#31295 · 1 comment · Opened Sep 11, 2026
[otp_ctrl] Fix local escalation signal generation loop in otp_ctrl.sv Open

IP:otp_ctrl

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

lowRISC/opentitan#31294 · Opened Sep 11, 2026
[rram_ctrl,dv] Add real test content to rram_ctrl_smoke_vseq Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lowRISC/opentitan#31293 · Opened Sep 11, 2026
[rram_ctrl,dv] Exercise and check the rram_macro prim (tl_prim) interface Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31292 · Opened Sep 11, 2026
[rram_ctrl,dv] Track wr_fifo/rd_fifo occupancy in rram_ctrl scoreboard Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

lowRISC/opentitan#31291 · Opened Sep 11, 2026
[rram_ctrl,dv] Add targeted checks for CsrExclCheck-excluded fields Open

Difficulty 3/5 1-2 days Newbie friendliness 66/100

lowRISC/opentitan#31290 · Opened Sep 11, 2026
[rram_ctrl,dv] Check host (tl_host) reads/writes in rram_ctrl scoreboard Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31289 · Opened Sep 11, 2026
[rram_ctrl,dv] Implement alert checking in rram_ctrl scoreboard Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

lowRISC/opentitan#31288 · Opened Sep 11, 2026
[rram_ctrl,dv] Connect rram_test_analog_io to something meaningful in rram_ctrl tb Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

lowRISC/opentitan#31287 · Opened Sep 11, 2026
alert_handler: class_clr/en are plain single wires — one-cycle glitch drops an in-flight escalation; senders can suppress alerts while passing all pings Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lowRISC/opentitan#31285 · Opened Sep 11, 2026
tlul_socket_m1: response steering relies solely on device-provided d_source — single flipped bit delivers one host's response to another with integrity checks passing Open

Difficulty 5/5 Over a week Newbie friendliness 28/100

lowRISC/opentitan#31284 · Opened Sep 11, 2026
[ascon] Change RTL to ignore software writes to the main control register when busy Open

IP:ascon

Difficulty 3/5 1-2 days Newbie friendliness 65/100

lowRISC/opentitan#31276 · Opened Sep 10, 2026
[gpio] Clarify documentation of Darjeeling-only features Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

lowRISC/opentitan#31266 · 1 comment · Opened Sep 8, 2026
[ci] Use improved cache indexing for bitstreams in the GCS cache Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

lowRISC/opentitan#31264 · Opened Sep 8, 2026
[ci] Use GitHub cache for bitstreams also when merging PRs Open

Difficulty 2/5 1-3 hours Newbie friendliness 86/100

lowRISC/opentitan#31261 · Opened Sep 8, 2026
[RFC][ROM] Integrating FIPS 140-3 Known Answer Tests into OpenTitan Mask ROM Open

FIPS RFC:Proposal SW:ROM Type:Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

lowRISC/opentitan#31255 · 1 comment · Opened Sep 7, 2026
[RFC][ROM_EXT] ROM_EXT Hierarchical Delegate Signing Scheme Open

RFC:Proposal Security: SW Guidance SW:ROM_EXT Type:Enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

lowRISC/opentitan#31254 · 1 comment · Opened Sep 7, 2026
[topgen] Naming convention for negative signals Open

Component:Tooling

Difficulty 5/5 Over a week Newbie friendliness 35/100

lowRISC/opentitan#31251 · Opened Sep 7, 2026
Hyperdebug + CW310 Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lowRISC/opentitan#31248 · Opened Sep 7, 2026
CW310 Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lowRISC/opentitan#31247 · Opened Sep 7, 2026
None Open

Difficulty 5/5 Over a week Newbie friendliness 1/100

lowRISC/opentitan#31246 · Opened Sep 7, 2026
For SiVal test cases, test is running relevant FPGA or silicon regression Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

lowRISC/opentitan#31245 · Opened Sep 7, 2026
Test added to dvsim nightly regression (and passing at time of checking) Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

lowRISC/opentitan#31244 · Opened Sep 7, 2026
HJSON test plan updated with test name (so it shows up in the dashboard) Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

lowRISC/opentitan#31243 · Opened Sep 7, 2026
Host-side component developed Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

lowRISC/opentitan#31242 · Opened Sep 7, 2026
Bazel build rules developed Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lowRISC/opentitan#31241 · Opened Sep 7, 2026
Device-side (C) component developed Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

lowRISC/opentitan#31240 · Opened Sep 7, 2026
Check if existing test covers most or all of this testpoint (if so, either extend said test to cover all points, or skip the next 3 checkboxes) Open

Difficulty 4/5 3-5 days Newbie friendliness 15/100

lowRISC/opentitan#31239 · Opened Sep 7, 2026
[chip-test] Open

Component:ChipLevelTest

Difficulty 5/5 Over a week Newbie friendliness 15/100

lowRISC/opentitan#31238 · Opened Sep 7, 2026
[kmac] Why is "SHA3 engine internal error" recoverable in an app interface? Open

IP:kmac

lowRISC/opentitan#31235 · 4 comments · 1 assignee · Opened Sep 4, 2026
[rv_dm, doc] Ensure documentation of `DmiInterface` Open

Component:Doc IP:rv_dm

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

lowRISC/opentitan#31225 · Opened Sep 4, 2026
[keymgr_dpe, dv] fix `check_invalid_key` function Open

Component:DV IP:keymgr_dpe

lowRISC/opentitan#31223 · 1 assignee · Opened Sep 4, 2026
[otbn] Alerts should use autogenerated index Open

IP:otbn

Difficulty 2/5 1-3 hours Newbie friendliness 76/100

lowRISC/opentitan#31221 · 1 comment · Opened Sep 3, 2026

lowRISC/opentitan

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