boards/arm/nucleo_f446re/nucleo_f446re_defconfig

# SPDX-License-Identifier: Apache-2.0

CONFIG_ARM=y
CONFIG_BOARD_NUCLEO_F446RE=y
CONFIG_SOC_SERIES_STM32F4X=y
CONFIG_SOC_STM32F446XE=y
# 96MHz system clock (highest value to get a precise USB clock)
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=96000000
CONFIG_SYS_CLOCK_TICKS_PER_SEC=1000

# Enable MPU
CONFIG_ARM_MPU=y

CONFIG_SERIAL=y

# console
CONFIG_CONSOLE=y
CONFIG_UART_CONSOLE=y

# enable pinmux
CONFIG_PINMUX=y

# enable GPIO
CONFIG_GPIO=y

# clock configuration
CONFIG_CLOCK_CONTROL=y

# Clock configuration for Cube Clock control driver
CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# use HSE as PLL input
CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
# however, the board does not have an external oscillator, so just use
# the 8MHz clock signal coming from integrated STLink
CONFIG_CLOCK_STM32_HSE_BYPASS=y

# produce 84MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_M_DIVISOR=8
CONFIG_CLOCK_STM32_PLL_N_MULTIPLIER=384
CONFIG_CLOCK_STM32_PLL_P_DIVISOR=4
CONFIG_CLOCK_STM32_PLL_Q_DIVISOR=8
CONFIG_CLOCK_STM32_AHB_PRESCALER=1

# APB1 clock must not exceed 50MHz limit
CONFIG_CLOCK_STM32_APB1_PRESCALER=2
CONFIG_CLOCK_STM32_APB2_PRESCALER=1