drivers: clock: add stm32n6 clock

Add STM32N6 clock driver.
Supported clocks are LSE, LSI, HSE, HSI, PLL1-4, IC1-20,
peripheral clock and CPU clock.

Signed-off-by: Guillaume Gautier <[email protected]>

Author: gautierg-st

drivers/clock_control/CMakeLists.txt

@@ -59,6 +59,8 @@ elseif(CONFIG_SOC_SERIES_STM32H7RSX)
   zephyr_library_sources(clock_stm32_ll_h7.c)
 elseif(CONFIG_SOC_SERIES_STM32H5X)
   zephyr_library_sources(clock_stm32_ll_h5.c)
+elseif(CONFIG_SOC_SERIES_STM32N6X)
+  zephyr_library_sources(clock_stm32_ll_n6.c)
 elseif(CONFIG_SOC_SERIES_STM32U5X)
   zephyr_library_sources(clock_stm32_ll_u5.c)
 elseif(CONFIG_SOC_SERIES_STM32WB0X)

drivers/clock_control/Kconfig.stm32

@@ -10,7 +10,8 @@ menuconfig CLOCK_CONTROL_STM32_CUBE
 	default y
 	select USE_STM32_LL_UTILS
 	select USE_STM32_LL_RCC if (SOC_SERIES_STM32MP1X || SOC_SERIES_STM32H7X || \
-		SOC_SERIES_STM32H7RSX || SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X)
+		SOC_SERIES_STM32H7RSX || SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X || \
+		SOC_SERIES_STM32N6X)
 	select RUNTIME_NMI if ($(dt_nodelabel_enabled,clk_hse) && \
 		$(dt_nodelabel_has_prop,clk_hse,css-enabled))
 	help