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drivers: clock: n6: prevent clock configuration if NO_SEL is used

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For STM32N6, when a device clock source is defined with NO_SEL, do not
configure it.

Signed-off-by: Guillaume Gautier <guillaume.gautier-ext@st.com>
This commit is contained in:
Guillaume Gautier
2025-08-19 16:03:23 +02:00
committed by Benjamin Cabé
parent c712d1e817
commit 78fa4f0142
1 changed files with 5 additions and 0 deletions
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5
drivers/clock_control/clock_stm32_ll_n6.c
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@@ -266,6 +266,11 @@ static int stm32_clock_control_configure(const struct device *dev,
return err;
}
if (pclken->enr == NO_SEL) {
/* Domain clock is fixed. Nothing to set. Exit */
return 0;
}
sys_clear_bits(DT_REG_ADDR(DT_NODELABEL(rcc)) + STM32_DT_CLKSEL_REG_GET(pclken->enr),
STM32_DT_CLKSEL_MASK_GET(pclken->enr) <<
STM32_DT_CLKSEL_SHIFT_GET(pclken->enr));