Lately, we introduced an interface for controlling the internal clocks for all STM32 CPUs (stm32_common/include/stmclk.h). This is however only implemented for the STM32F1 and STM32F7 so far and should be implemented for all members of that family. As result, problems like the one in #6504 are trivial to solve...

This issue is created to track and synchronize the porting effort.

Todo:

• stm32f0 (cpu/stm32f[0|1|3] unify stmclk with stm32_common #7500)
• stm32f1
• stm32f2 (cpu/stm32f2: implement stmclk interface for stm32f2 #7159)
• stm32f3 (cpu/stm32f[0|1|3] unify stmclk with stm32_common #7500)
• stm32f4 (cpu/stm32f4: implement stmclk interface for stm32f4 #7158)
• stm32f7
• stm32l0
• stm32l1
• stm32l4 (stm32l4: implement stmclk interface #7469)