lowRISC / lowRISC/opentitan

[test-triage,earlgrey] chip_sw_power_sleep_load

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Component:TestTriage
Dominant language
SystemVerilog
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Description

Hierarchy of regression failure

Chip Level

Failure Description
UVM_ERROR @ 3299.126000 us: (chip_sw_power_sleep_load_vseq.sv:114) uvm_test_top.env.virtual_sequencer [uvm_test_top.env.virtual_sequencer.chip_sw_power_sleep_load_vseq] PWMCH3 : pkt3 Clock period is wrong.  rcv : 2  exp : 32
Steps to Reproduce
  • GitHub Revision: 950d8cda3209783a1abab34cf3444d686866a1f6
  • dvsim invocation command to reproduce the failure, inclusive of build and run seeds:
    ./util/dvsim/dvsim.py hw/top_earlgrey/dv/chip_sim_cfg.hjson -i chip_sw_power_sleep_load --fixed-seed 1
Tests with similar or related failures

No response

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running the provided dvsim command at revision 950d8cda3209783a1abab34cf3444d686866a1f6, then inspect chip_sw_power_sleep_load_vseq.sv at line 114. Investigate why PWMCH3 reports a clock period of 2 instead of 32, and consider the issue resolved when this regression no longer produces the reported UVM error.

Written by the indexing model from the issue text.

Assessment

Domain
embedded-iot, testing
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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