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Allow board to configure HSE clock in bypass-mode. This is needed to enable HSE with Nucleo-F746ZG board.

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Jussi Kivilinna
2017-02-17 07:15:22 -06:00
committed by Gregory Nutt
parent 351d46444c
commit dd1aa2357b
1 changed files with 5 additions and 0 deletions
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arch/arm/src/stm32f7/stm32f74xx75xx_rcc.c
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@@ -687,6 +687,11 @@ static void stm32_stdclockconfig(void)
/* Enable External High-Speed Clock (HSE) */
regval = getreg32(STM32_RCC_CR);
#ifdef STM32_HSEBYP_ENABLE /* May be defined in board.h header file */
regval |= RCC_CR_HSEBYP; /* Enable HSE clock bypass */
#else
regval &= ~RCC_CR_HSEBYP; /* Disable HSE clock bypass */
#endif
regval |= RCC_CR_HSEON; /* Enable HSE */
putreg32(regval, STM32_RCC_CR);