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driver: timer: stm32_lptim: backup domain is reset #25895

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jdascenzio opened this issue Jun 2, 2020 · 0 comments · Fixed by #25576
Closed

driver: timer: stm32_lptim: backup domain is reset #25895

jdascenzio opened this issue Jun 2, 2020 · 0 comments · Fixed by #25576
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@erwango
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bug The issue is a bug, or the PR is fixing a bug platform: STM32 ST Micro STM32

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@jdascenzio
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Describe the bug
When the stm32 lptimer is used, the backup domain is reset.

To Reproduce
Enable the stm32 lptimer with: CONFIG_STM32_LPTIM_TIMER=y

Impact
The backup domain reset removes:

  • RTC configuration
  • backup registers
  • RCC Backup domain control register
@jdascenzio jdascenzio added the bug The issue is a bug, or the PR is fixing a bug label Jun 2, 2020
@jdascenzio jdascenzio mentioned this issue Jun 2, 2020
Merged
@erwango erwango added platform: STM32 ST Micro STM32 priority: medium Medium impact/importance bug labels Jun 2, 2020
@carlescufi carlescufi removed the priority: medium Medium impact/importance bug label Jun 2, 2020
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@erwango erwango

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bug The issue is a bug, or the PR is fixing a bug platform: STM32 ST Micro STM32
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driver: timer: stm32_lptim: don't reset backup domain jdascenzio/zephyr
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@jdascenzio @carlescufi @erwango