# STM32F1 PLL configuration options # Copyright (c) 2019 Linaro # SPDX-License-Identifier: Apache-2.0 if SOC_SERIES_STM32F1X config CLOCK_STM32_PLL_XTPRE bool "HSE to PLL /2 prescaler" depends on SOC_STM32F10X_DENSITY_DEVICE && CLOCK_STM32_PLL_SRC_HSE help Enable this option to enable /2 prescaler on HSE to PLL clock signal config CLOCK_STM32_PLL_MULTIPLIER int "PLL multiplier" depends on CLOCK_STM32_SYSCLK_SRC_PLL default 9 range 2 16 if SOC_STM32F10X_DENSITY_DEVICE range 4 9 if SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE help PLL multiplier, PLL output must not exceed 72MHz. Allowed values: Density devices: 2-16 Connectivity devices: 4 - 9 and 13 ( used for multiplication factor 6.5). config CLOCK_STM32_PLL_PREDIV1 int "PREDIV1 Prescaler" depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_SYSCLK_SRC_PLL default 1 range 1 16 help PREDIV1 is PLL clock signal prescaler, allowed values: 1 - 16. endif # SOC_SERIES_STM32F1X