drivers/clock_control: stm32H7 AHB clock computation depends on core
On cortex M4, AHB clock is equal to SystemCoreClock On Cortex M7, AHB clock is equal to SystemCoreClock/HPRE By the way, D1CPRE is of no use when starting from SystemCoreColck. Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
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1 changed files with 5 additions and 3 deletions
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@ -162,10 +162,12 @@ static int stm32_clock_control_get_subsys_rate(struct device *clock,
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* since it will be updated after clock configuration and hence
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* more likely to contain actual clock speed
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*/
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u32_t sys_d1cpre_ck = get_bus_clock(SystemCoreClock,
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CONFIG_CLOCK_STM32_D1CPRE);
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u32_t ahb_clock = get_bus_clock(sys_d1cpre_ck,
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#if defined(CONFIG_CPU_CORTEX_M4)
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u32_t ahb_clock = SystemCoreClock;
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#else
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u32_t ahb_clock = get_bus_clock(SystemCoreClock,
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CONFIG_CLOCK_STM32_HPRE);
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#endif
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u32_t apb1_clock = get_bus_clock(ahb_clock,
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CONFIG_CLOCK_STM32_D2PPRE1);
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u32_t apb2_clock = get_bus_clock(ahb_clock,
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