lowRISC / lowRISC/opentitan

[clkmgr, fpga] Enhance clkmgr to allow for different types of clock gates per module

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Component:FPGA Earlgrey-PROD Triaged IP:clkmgr Priority:P2 TOP:earlgrey Type:FutureRelease
Dominant language
SystemVerilog
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Specifically, allow additional attributes in the top hjson file to specify what kind of FPGA clock gates a particular module should use.
See #11063 for motivation.

Contributor guide

Open the contributing guide

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 reading the clkmgr implementation and the top HJSON configuration, then review issue #11063 for the motivation. The change should let each module specify its FPGA clock-gate type through additional top-level HJSON attributes; no specific files or tests are named.

Written by the indexing model from the issue text.

Assessment

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

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