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stm32_common/stmclk: check if CLOCK_PLL_PREDIV is valid

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This commit is contained in:
Vincent Dupont 2018-01-23 11:49:13 +01:00
parent 26f3caf9d7
commit 21bbfbed1d
1 changed files with 2 additions and 0 deletions
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2
cpu/stm32_common/stmclk.c
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@ -225,6 +225,8 @@ void stmclk_init_sysclk(void)
RCC->CFGR |= RCC_CFGR_PLLXTPRE; /* PREDIV == 2 */
#elif CLOCK_PLL_PREDIV > 2
RCC->CFGR2 = PLL_PREDIV; /* PREDIV > 2 */
#elif CLOCK_PLL_PREDIV == 0
#error "CLOCK_PLL_PREDIV invalid"
#endif
#endif
RCC->CR |= (RCC_CR_PLLON);