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Fintek F81214E driver support#547

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gordon-nexthop wants to merge 2 commits intosonic-net:masterfrom
nexthop-ai:gordon.fintek_F81214E_driver_support
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Fintek F81214E driver support#547
gordon-nexthop wants to merge 2 commits intosonic-net:masterfrom
nexthop-ai:gordon.fintek_F81214E_driver_support

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@gordon-nexthop gordon-nexthop commented Mar 18, 2026

Driver support for Finetk F81214E an LPC/eSPI to 2 UART Super I/O chip. Upstream linux pull request - will remove this patch if and when this ultimately gets accepted and backported to 6.12.

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@gordon-nexthop gordon-nexthop changed the title NOS-4523: Blackmamba: Fintek F81214E driver support (#126) Fintek F81214E driver support Mar 18, 2026
@gordon-nexthop gordon-nexthop marked this pull request as ready for review March 18, 2026 17:28
@gordon-nexthop gordon-nexthop requested a review from a team as a code owner March 18, 2026 17:28
@gordon-nexthop gordon-nexthop marked this pull request as draft March 18, 2026 17:52
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gordon-nexthop commented Mar 18, 2026

Will wait for #541 and rebase accordingly

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@gordon-nexthop gordon-nexthop marked this pull request as ready for review March 31, 2026 14:42
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Black Mamba uses Finetk F81214E for UART. Ravi has submitted the patch
to upstream linux and is trying to get it included in v6.12

This is a stop gap for until this upstream request merges so builds for
black mamba we do internally has everything that we need.
[NOS-4523](https://nexthopai.atlassian.net/browse/NOS-4523?atlOrigin=eyJpIjoiMjRhZGVmMmY0NDg3NDE0Mzg3Nzk2MmU4ZjIzOWQxNzciLCJwIjoiaiJ9)
is tracking support in upstream linux. I think merge latency is
relatively high here anyway…

I’m interested in what we do with regards to SONiC upstream here...

Build with this patch applied:
https://github.com/nexthop-ai/private-sonic-buildimage/actions/runs/23200968066
build succeeded - merging.

[NOS-4523](https://nexthopai.atlassian.net/browse/NOS-4523?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ)

- [x] Yes
- [ ] No

- [ ] 202505
- [ ] 202511

[NOS-4523]:
https://nexthopai.atlassian.net/browse/NOS-4523?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ
[NOS-4523]:
https://nexthopai.atlassian.net/browse/NOS-4523?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

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Signed-off-by: gordon-nexthop <gordon@nexthop.ai>
Signed-off-by: gordon-nexthop <gordon@nexthop.ai>
@gordon-nexthop gordon-nexthop force-pushed the gordon.fintek_F81214E_driver_support branch from 6d02585 to 31b806e Compare March 31, 2026 19:16
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2 participants