drivers: clock_control: stm32h7: disable PLL1 before configuring it #57337
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If the boot loader already switched the system clock to PLL1 we need to switch back to HSI first and disable PLL1 before we can configure PLL1. Otherwise the register writes will simply be ignored and we'll end up with an inconsistent state. Most of the code has been recycled from `clock_stm32_ll_common.c`. Signed-off-by: Sascha Silbe <[email protected]> Signed-off-by: Sascha Silbe <[email protected]>
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FRASTM
approved these changes
Apr 27, 2023
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If the boot loader already switched the system clock to PLL1 we need to switch back to HSI first and disable PLL1 before we can configure PLL1. Otherwise the register writes will simply be ignored and we'll end up with an inconsistent state.
Most of the code has been recycled from
clock_stm32_ll_common.c.