STM32: drop Kconfig support for LPTIM timer clock source selection #97546
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Remove the possibility to configure the LPTIM timer clock source through Kconfig. The deprecation warning was added 3 years ago in Zephyr 3.2 by commit bbac316; more than enough time has elapsed for this option to be removed. Signed-off-by: Mathieu Choplain <mathieu.choplain-ext@st.com>
Add notice about removal of LPTIM clock source configuration through Kconfig in the Zephyr 4.3 release notes. Signed-off-by: Mathieu Choplain <mathieu.choplain-ext@st.com>
zephyrbot added Release Notes zephyrbot requested review from FRASTM, GeorgeCGV, andyross, cfriedt, djiatsaf-st, erwango, etienne-lms, gautierg-st, jhedberg, kartben, marwaiehm-st and teburd 
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etienne-lms reviewed Oct 14, 2025
| using devicetree should be preferred. | ||
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| # Invisible symbols exposing the selected LPTIM source to Kconfig | ||
| # NOTE: the values 2/3 correspond too STM32_SRC_LSE/STM32_SRC_LSI |
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| # NOTE: the values 2/3 correspond too STM32_SRC_LSE/STM32_SRC_LSI | |
| # NOTE: the values 2/3 correspond to STM32_SRC_LSE/STM32_SRC_LSI |
erwango approved these changes Oct 15, 2025
jhedberg approved these changes Oct 15, 2025
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Selecting LPTIM timer source through Kconfig is marked as deprecated since Zephyr 3.2
Note that the underlying symbols have not been removed but they are now promptless; attempting to set them using command line or a configuration file will result in a build error:
A broader rework will be required to drop these symbols entirely and is out of scope of this PR.