STM32U535/545: dtc error for node wkup-pin@8 referencing non-existent port gpiof

[schmida2]

Describe the bug

I had my board based on STM32U545RE_Q working fine with Zephyr 4.1.0.

With commit d280d89 the gpiof port got moved from file stm32u5.dtsi to file stm32u5_extra.dtsi.
stm32u5_extra.dtsi is not included for STM32U535/545.

In same file stm32u5.dtsi still node wkup-pin@8 references non-existent port gpiof.

Regression

• This is a regression.

Steps to reproduce

1. have a board like nucleo_u575zi_q and modify it to use STM32U545, e.g.:

#include <st/u5/stm32u545Xe.dtsi>
#include <st/u5/stm32u545retxq-pinctrl.dtsi>

2. compile samples/hello_world

Relevant log output

devicetree error: /soc/power@46020800/wkup-pin@8: undefined node label 'gpiof'

Impact

Major – Severely degrades functionality; workaround is difficult or unavailable.

Environment

No response

Additional Context

No response

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[erwango]

Thaks for reporting tis issue.
Even though this doesn't seem to be so clear in the ref man, probably the best solution is to move wkup-pin@8 in stm32u5-extra.dtsi. Would you be up to push such change @schmida2 ?

[schmida2]

Yes, I can do that.
I will want to have limited wkup-pin@8 in stm32u5.dtsi and the extended overwrite in stm32u5-extra.dtsi then.

[erwango]

Yes, I can do that. I will want to have limited wkup-pin@8 in stm32u5.dtsi and the extended overwrite in stm32u5-extra.dtsi then.

Seems the right choice indeed according to https://github.com/STMicroelectronics/STM32_open_pin_data/blob/master/mcu/STM32U545VETxQ.xml