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Update m5120csc platform mapping - #1869

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kyliechen-cisco wants to merge 2 commits into
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kyliechen-cisco:kylchen/thunderjet-platform-mapping-fix-tap
Draft

kyliechen-cisco wants to merge 2 commits into
meta:mainfrom
kyliechen-cisco:kylchen/thunderjet-platform-mapping-fix-tap

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@kyliechen-cisco

@kyliechen-cisco kyliechen-cisco commented Oct 30, 2026 •

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Pre-submission checklist

  • I've ran the linters locally and fixed lint errors related to the files I modified in this PR. You can install the linters by running pip install -r requirements-dev.txt && pre-commit install
  • pre-commit run

clang-format.........................................(no files to check)Skipped
shellcheck...........................................(no files to check)Skipped
shfmt................................................(no files to check)Skipped
trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
check json...............................................................Passed
check for merge conflicts................................................Passed
ruff check...........................................(no files to check)Skipped
ruff format..........................................(no files to check)Skipped
Check copyright headers in new FBOSS C/C++ files.....(no files to check)Skipped
Prevent sai_impl in fboss manifest.......................................Passed

Summary

Update M5120CSC P200 TX FIR and custom SerDes settings, physical lane mappings, and polarity settings. Regenerate the platform mapping files from the updated configuration.

Test Plan

Built and ran fboss-platform-mapping-gen for m5120csc in the build container. Verified the regenerated files match the intended configuration and the raw platform mapping contains 64 ports.

@meta-cla meta-cla Bot added the CLA Signed label Oct 30, 2026
@kyliechen-cisco kyliechen-cisco changed the title Fix m5120csc platform mapping Update m5120csc platform mapping Oct 30, 2026

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