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Lightweight patch addressing #84934. Same as #100792 but for Zephyr v4.2.

A similar patch is found in #99756 on main branch but direct backport isn't possible.

(Note that unlike #100792, usb_next stack is functional with this patch on v4.2)

Fixes #84934 (<== required by CI to pass backport test...)

OTGHS using the USBPHYC on STM32F723 and some STM32F730 requires
special clock configuration to work.

Signed-off-by: Mathieu Choplain <[email protected]>
OTGHS using the USBPHYC on STM32F723 and some STM32F730 requires
special clock configuration to work.

Signed-off-by: Mathieu Choplain <[email protected]>
@mathieuchopstm mathieuchopstm added area: USB Universal Serial Bus platform: STM32 ST Micro STM32 labels Dec 10, 2025
@JarmouniA JarmouniA changed the title [v4.2] stm32: usb: fix OTGHS on STM32F723/F730 (embedded USBPHYC) [Backport v4.2-branch] stm32: usb: fix OTGHS on STM32F723/F730 (embedded USBPHYC) Dec 10, 2025
@JarmouniA JarmouniA added the Backport Backport PR and backport failure issues label Dec 10, 2025
@github-project-automation github-project-automation bot moved this to To do in Backports Dec 10, 2025
@JarmouniA JarmouniA added this to the v4.2.2 milestone Dec 10, 2025
@JarmouniA JarmouniA closed this Dec 10, 2025
@JarmouniA JarmouniA reopened this Dec 10, 2025
@github-project-automation github-project-automation bot moved this from To do to Done in Backports Dec 10, 2025
@github-project-automation github-project-automation bot moved this from Done to Needs more info in Backports Dec 10, 2025
@tmon-nordic
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I believe the correct way is to add backport label to the original PR and then when the original PR is merged, just wait for bot to pick it up and open backport PR.

@mathieuchopstm
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I believe the correct way is to add backport label to the original PR and then when the original PR is merged, just wait for bot to pick it up and open backport PR.

By original PR here, do you mean #100792? I think the bot won't be able to open backport PR anyways, as the patch should cause conflicts...

@JarmouniA JarmouniA closed this Dec 19, 2025
@github-project-automation github-project-automation bot moved this from Needs more info to Done in Backports Dec 19, 2025
@JarmouniA JarmouniA reopened this Dec 19, 2025
@github-project-automation github-project-automation bot moved this from Done to Needs more info in Backports Dec 19, 2025
@sonarqubecloud
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area: USB Universal Serial Bus Backport Backport PR and backport failure issues platform: STM32 ST Micro STM32

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Status: Needs more info

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USB devices broken on STM32F723XX MCUs after clock enable changes in Zephyr v3.7.0

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