Fix tropic int pin

[onvej-sl]

I discovered this bug when I tried to speed up Tropic communication by using the int pin (see https://github.com/tropicsquare/libtropic/blob/v4.0.0/hal/stm32/stm32u5xx/libtropic_port_stm32u5xx.c#L196). Even after the fix, it behaved as though the pin were never high. So I chose a different way to speed up the communication: #6956

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b37bb4bf-da85-4992-b01d-57695aedfd95

📥 Commits

Reviewing files that changed from the base of the PR and between 6704563 and bd00828.

📒 Files selected for processing (3)

• core/embed/models/T3W1/boards/trezor_t3w1_revA.h
• core/embed/models/T3W1/boards/trezor_t3w1_revB.h
• core/embed/models/T3W1/boards/trezor_t3w1_revC.h

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Walkthrough

This pull request updates the TROPIC01 interrupt GPIO configuration across all three Trezor T3W1 board revision headers. The changes uniformly redirect the interrupt signal from GPIOB pin 11 to GPIOD pin 8, updating the corresponding port, pin, and HAL clock-enable macro in each board definition file (revA, revB, and revC).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Description check	❓ Inconclusive	The PR description lacks required sections from the template such as development status labels, project assignment, priority, team, and sprint information. However, it provides meaningful context about the bug discovery and rationale for the fix.	Add required sections including assignment, project setup (Firmware project with Priority/Team/Sprint), and development status (set to 'Needs Review' for final PRs). Include QA notes if the fix is testable.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Fix tropic int pin' is concise and directly describes the main change: correcting the TROPIC01 interrupt pin GPIO configuration across three board header files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch onvej-sl/fix-tropic-pin

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[github-actions]

en main(all)

model	device_test	click_test	persistence_test
T2T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3B1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3T1	test(all) main(all)	test(all) main(all)	test(all) main(all)
T3W1	test(all) main(all)	test(all) main(all)	test(all) main(all)

Latest CI run: 26171593008

[TychoVrahe]

I think that tropic fw version we used at start of production did not support the int pin. Did you test the fix with some newer version of tropic fw that has the support implemented?

Also, due to the limitation of original fw, we did not test this pin during production, so there is some possibility that some of already produced devices would not work correctly when this pin is used.

[TychoVrahe]

The pin config change looks correct in any case.

[onvej-sl]

I think that tropic fw version we used at start of production did not support the int pin.

That would explain it.

Anyway, it looks like we won’t need the pin for now.