# STM32 MCU clock control driver config # Copyright (c) 2017 Linaro # Copyright (c) 2017 RnDity Sp. z o.o. # SPDX-License-Identifier: Apache-2.0 menuconfig CLOCK_CONTROL_STM32_CUBE bool "STM32 Reset & Clock Control" depends on SOC_FAMILY_STM32 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) select RUNTIME_NMI if ($(dt_nodelabel_enabled,clk_hse) && \ $(dt_nodelabel_has_prop,clk_hse,css-enabled)) help Enable driver for Reset & Clock Control subsystem found in STM32 family of MCUs if CLOCK_CONTROL_STM32_CUBE DT_STM32_HSE_CLOCK := $(dt_nodelabel_path,clk_hse) DT_STM32_HSE_CLOCK_FREQ := $(dt_node_int_prop_int,$(DT_STM32_HSE_CLOCK),clock-frequency) config CLOCK_STM32_HSE_CLOCK int "HSE clock value" default "$(DT_STM32_HSE_CLOCK_FREQ)" if "$(dt_nodelabel_enabled,clk_hse)" default 8000000 help Value of external high-speed clock (HSE). This symbol could be optionally configured using device tree by setting "clock-frequency" value of clk_hse node. For instance: &clk_hse{ status = "okay"; clock-frequency = ; }; Note: Device tree configuration is overridden when current symbol is set: CONFIG_CLOCK_STM32_HSE_CLOCK=32000000 config CLOCK_STM32_MUX bool "STM32 clock mux driver" default y depends on DT_HAS_ST_STM32_CLOCK_MUX_ENABLED help Enable driver for STM32 clock mux which don't match an existing clock hardware block but allows to select a clock for a specific domain. For instance per_ck clock on STM32H7 or CLK48 clock menu "STM32WB0 LSI options" depends on DT_HAS_ST_STM32WB0_LSI_CLOCK_ENABLED config STM32WB0_LSI_MEASUREMENT_WINDOW int "Size of LSI measurement window (in periods)" default 32 range 23 256 help Size of the LSI measurement window (# of LSI periods) The measurement process involves waiting for a certain amount of LSI periods to occur, in order to determine precisely the LSI period, and thus frequency. This property controls how much LSI periods are required for each measure. Bigger window sizes increase accuracy of the measure, but increase the time needed to complete it. Since fLSI >= 24kHz, increasing the measurement window size makes each measure roughly 42µs slower in the worst case. Minimal value is a recommendation from RM0505 Rev.1 §25.8.2, and maximum value is a hardware limitation. config STM32WB0_LSI_RUNTIME_MEASUREMENT_INTERVAL int "LSI run-time measurement interval (ms)" default 0 help Interval at which runtime measurements should be performed, in milliseconds Since the LSI RC frequency is affected by temperature, which is not stable across time, it is recommended to perform measurements of the LSI frequency at regular intervals to obtain better accuracy. This property enables runtime LSI measurement if present. In this case, a background thread is created and performs LSI measurements, sleeping the amount of time specified in this property between each measure. This thread is also tasked with updating the control registers of peripherals affected by slow clock drift such as RTC or IWDG, in collaboration with the peripherals' drivers. Note that this increases the memory footprint of the clock control driver, and may increase power consumption. Setting this option to the default value of "0" disables runtime frequency measurements - the result of a single measure performed at boot will be treated as LSI frequency for the lifetime of the application. endmenu # DT_HAS_ST_STM32WB0_LSI_CLOCK_ENABLED # Micro-controller Clock Output (MCO) configuration options config CLOCK_STM32_MCO bool default y depends on DT_HAS_ST_STM32_CLOCK_MCO_ENABLED || DT_HAS_ST_STM32F1_CLOCK_MCO_ENABLED # Although deprecated, MCO configuration via Kconfig takes priority over Device Tree. # Prevent DT-based MCO driver from compiling when Kconfig is used. depends on CLOCK_STM32_MCO1_SRC_NOCLOCK && CLOCK_STM32_MCO2_SRC_NOCLOCK choice prompt "STM32 MCO1 Clock Source" default CLOCK_STM32_MCO1_SRC_NOCLOCK config CLOCK_STM32_MCO1_SRC_NOCLOCK bool "NOCLOCK" help MCO1 output disabled, no clock on MCO1 config CLOCK_STM32_MCO1_SRC_EXT_HSE bool "EXT_HSE" depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE select DEPRECATED help Use EXT_HSE as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_LSE bool "LSE" depends on SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use LSE as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_HSE bool "HSE" depends on SOC_SERIES_STM32F1X || \ SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use HSE as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_LSI bool "LSI" depends on SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use LSI as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_MSI bool "MSI" depends on SOC_SERIES_STM32L4X select DEPRECATED help Use MSI as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_MSIK bool "MSIK" depends on SOC_SERIES_STM32U5X select DEPRECATED help Use MSIK as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_MSIS bool "MSIS" depends on SOC_SERIES_STM32U5X select DEPRECATED help Use MSIS as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_HSI bool "HSI" depends on SOC_SERIES_STM32F1X || \ SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use HSI as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_HSI16 bool "HSI16" depends on SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use HSI16 as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_HSI48 bool "HSI48" depends on SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use HSI48 as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLLCLK bool "PLLCLK" depends on SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use PLLCLK as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLLQCLK bool "PLLQ" depends on SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use PLLQ as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLLCLK_DIV2 bool "PLLCLK_DIV2" depends on SOC_SERIES_STM32F1X select DEPRECATED help Use PLLCLK/2 as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLL2CLK bool "PLL2CLK" depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE select DEPRECATED help Use PLL2CLK as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLLI2SCLK bool "PLLI2SCLK" depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE select DEPRECATED help Use PLLI2SCLK as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_PLLI2SCLK_DIV2 bool "PLLI2SCLK_DIV2" depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE select DEPRECATED help Use PLLI2SCLK/2 as source of MCO1 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO1_SRC_SYSCLK bool "SYSCLK" depends on SOC_SERIES_STM32F1X || \ SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32U5X select DEPRECATED help Use SYSCLK as source of MCO1 This option is deprecated, please use devicetree instead. endchoice config CLOCK_STM32_MCO1_DIV int "MCO1 prescaler" depends on !CLOCK_STM32_MCO1_SRC_NOCLOCK && (\ SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32L4X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X || \ SOC_SERIES_STM32U5X \ ) default 1 range 1 5 if SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X range 1 15 if SOC_SERIES_STM32H7X || SOC_SERIES_STM32H7RSX || SOC_SERIES_STM32H5X range 1 16 if SOC_SERIES_STM32L4X || SOC_SERIES_STM32U5X help Prescaler for MCO1 output clock This option is deprecated, please use devicetree instead. choice prompt "STM32 MCO2 Clock Source" default CLOCK_STM32_MCO2_SRC_NOCLOCK config CLOCK_STM32_MCO2_SRC_NOCLOCK bool "NOCLOCK" help MCO2 output disabled, no clock on MCO2 config CLOCK_STM32_MCO2_SRC_SYSCLK bool "SYSCLK" depends on SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use SYSCLK as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_PLLI2S bool "PLLI2S" depends on SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X select DEPRECATED help Use PLLI2S as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_HSE bool "HSE" depends on SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use HSE as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_LSI bool "LSI" depends on SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X help Use LSI as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_CSI bool "CSI" depends on SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use CSI as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_PLLCLK bool "PLLCLK" depends on SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X select DEPRECATED help Use PLLCLK as source of MCO2 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_PLLPCLK bool "PLLPCLK" depends on SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use PLLPCLK as source of MC02 This option is deprecated, please use devicetree instead. config CLOCK_STM32_MCO2_SRC_PLL2PCLK bool "PLL2PCLK" depends on SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX || \ SOC_SERIES_STM32H5X select DEPRECATED help Use PLL2PCLK as source of MC02 This option is deprecated, please use devicetree instead. endchoice config CLOCK_STM32_MCO2_DIV int "MCO2 prescaler" depends on !CLOCK_STM32_MCO2_SRC_NOCLOCK && (\ SOC_SERIES_STM32F4X || \ SOC_SERIES_STM32F7X || \ SOC_SERIES_STM32H5X || \ SOC_SERIES_STM32H7X || \ SOC_SERIES_STM32H7RSX \ ) default 1 range 1 5 if SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X range 1 15 if SOC_SERIES_STM32H7X || SOC_SERIES_STM32H7RSX || SOC_SERIES_STM32H5X help Prescaler for MCO2 output clock endif # CLOCK_CONTROL_STM32_CUBE