284 lines
6.9 KiB
Plaintext
284 lines
6.9 KiB
Plaintext
# Kconfig - STM32 MCU clock control driver config
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#
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# Copyright (c) 2017 Linaro
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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if SOC_FAMILY_STM32
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menuconfig CLOCK_CONTROL_STM32_CUBE
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bool
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prompt "STM32 Reset & Clock Control"
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depends on CLOCK_CONTROL
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default n if SOC_SERIES_STM32
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help
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Enable driver for Reset & Clock Control subsystem found
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in STM32 family of MCUs
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if CLOCK_CONTROL_STM32_CUBE
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config CLOCK_CONTROL_STM32_DEVICE_INIT_PRIORITY
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int "Clock Control Device Priority"
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default 1
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help
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This option controls the priority of clock control
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device initialization. Higher priority ensures that the device
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is initialized earlier in the startup cycle. If unsure, leave
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at default value 1
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choice
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prompt "STM32 System Clock Source"
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default CLOCK_STM32_SYSCLK_SRC_PLL
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config CLOCK_STM32_SYSCLK_SRC_HSE
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bool "HSE"
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help
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Use HSE as source of SYSCLK
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config CLOCK_STM32_SYSCLK_SRC_HSI
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bool "HSI"
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help
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Use HSI as source of SYSCLK
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config CLOCK_STM32_SYSCLK_SRC_PLL
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bool "PLL"
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help
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Use PLL as source of SYSCLK
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endchoice
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config CLOCK_STM32_HSE_BYPASS
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bool "HSE bypass"
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depends on CLOCK_STM32_SYSCLK_SRC_HSE || CLOCK_STM32_PLL_SRC_HSE
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help
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Enable this option to bypass external high-speed clock (HSE).
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config CLOCK_STM32_HSE_CLOCK
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int "HSE clock value"
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depends on CLOCK_STM32_SYSCLK_SRC_HSE || CLOCK_STM32_PLL_SRC_HSE
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help
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Value of external high-speed clock (HSE).
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choice
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prompt "STM32 PLL Clock Source"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default CLOCK_STM32_PLL_SRC_HSI
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config CLOCK_STM32_PLL_SRC_MSI
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bool "MSI"
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help
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Use MSI as source of PLL
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config CLOCK_STM32_PLL_SRC_HSI
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bool "HSI"
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help
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Use HSI as source of PLL
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config CLOCK_STM32_PLL_SRC_HSE
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bool "HSE"
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help
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Use HSE as source of PLL
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config CLOCK_STM32_PLL_SRC_PLL2
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bool "PLL2"
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depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE
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help
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Use PLL2 as source of main PLL. This is equivalent of defining
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PLL2 as source PREDIV1SCR. If not selected, default source is HSE.
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endchoice
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if SOC_SERIES_STM32F1X
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config CLOCK_STM32_PLL_XTPRE
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bool "HSE to PLL /2 prescaler"
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depends on SOC_STM32F10X_DENSITY_DEVICE && CLOCK_STM32_PLL_SRC_HSE
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help
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Enable this option to enable /2 prescaler on HSE to PLL clock signal
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config CLOCK_STM32_PLL_MULTIPLIER
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int "PLL multiplier"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 9
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range 2 16 if SOC_STM32F10X_DENSITY_DEVICE
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range 4 9 if SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE
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help
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PLL multiplier, PLL output must not exceed 72MHz. Allowed values:
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Density devices: 2-16
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Connectivity devices: 4 - 9 and 13 ( used for multiplication factor 6.5).
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config CLOCK_STM32_PLL_PREDIV1
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int "PREDIV1 Prescaler"
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depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_SYSCLK_SRC_PLL
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default 1
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range 1 16
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help
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PREDIV1 is PLL clock signal prescaler, allowed values: 1 - 16.
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config CLOCK_STM32_PLL2_MULTIPLIER
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int "PLL2 multiplier"
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depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_PLL_SRC_PLL2
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default 8
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range 8 20
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help
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PLL2 multiplier, allowed values: 8 - 20. 15-17-18-19 reserved
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config CLOCK_STM32_PLL2_PREDIV2
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int "PREDIV2 Prescaler"
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depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_PLL_SRC_PLL2
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default 1
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range 1 16
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help
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PREDIV2 is PLL2 prescaler, allowed values: 1 - 16.
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endif # SOC_SERIES_STM32F1X
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if SOC_SERIES_STM32F3X
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config CLOCK_STM32_PLL_PREDIV
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int "PREDIV Prescaler"
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default 1
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range 1 16
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help
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PREDIV is PLLSCR clock signal prescaler, allowed values: 1 - 16.
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config CLOCK_STM32_PLL_PREDIV1
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int "PREDIV1 Prescaler"
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depends on CLOCK_STM32_PLL_SRC_HSE && (SOC_STM32F302XE || SOC_STM32F303XE || SOC_STM32F398XX)
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default 1
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range 1 16
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help
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PREDIV is PLLSCR clock signal prescaler, present on STM32F302xE, STM32F303xE and STM32F39xx SoCs.
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Allowed values: 1 - 16.
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config CLOCK_STM32_PLL_MULTIPLIER
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int "PLL multiplier"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 9
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range 2 16
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help
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PLL multiplier, allowed values: 2-16. PLL output must not exceed 72MHz.
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endif # SOC_SERIES_STM32F3X
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if SOC_SERIES_STM32F4X
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config CLOCK_STM32_PLL_M_DIVISOR
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int "Division factor for PLL VCO input clock"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 8
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range 2 63
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help
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PLLM division factor needs to be set correctly to ensure that the VCO
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input frequency ranges from 1 to 2 MHz. It is recommended to select a
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frequency of 2 MHz to limit PLL jitter.
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Allowed values: 2-63
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config CLOCK_STM32_PLL_N_MULTIPLIER
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int "Multiplier factor for PLL VCO output clock"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 336
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range 192 432 if SOC_STM32F401XE
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range 50 432
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help
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PLLN multiplier factor needs to be set correctly to ensure that the
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VCO output frequency is between 100 and 432 MHz, except on STM32F401
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where the frequency must be between 192 and 432 MHz.
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Allowed values: 50-432 (STM32F401: 192-432)
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config CLOCK_STM32_PLL_P_DIVISOR
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int "PLL division factor for main system clock"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 4
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range 2 8
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help
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PLLP division factor needs to be set correctly to not exceed 84MHz.
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Allowed values: 2, 4, 6, 8
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config CLOCK_STM32_PLL_Q_DIVISOR
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int "Division factor for OTG FS, SDIO and RNG clocks"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 7
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range 2 15
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help
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The USB OTG FS requires a 48MHz clock to work correctly. SDIO and RNG
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need a frequency lower than or equal to 48 MHz to work correctly.
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Allowed values: 2-15
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endif # SOC_SERIES_STM32F4X
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if SOC_SERIES_STM32L4X
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config CLOCK_STM32_PLL_M_DIVISOR
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int "PLL divisor"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 1
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range 1 8
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help
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PLL divisor, allowed values: 1-8. With this ensure that the PLL
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VCO input frequency ranges from 4 to 16MHz.
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config CLOCK_STM32_PLL_N_MULTIPLIER
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int "PLL multiplier"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 20
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range 8 86
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help
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PLL multiplier, allowed values: 2-16. PLL output must not
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exceed 344MHz.
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config CLOCK_STM32_PLL_P_DIVISOR
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int "PLL P Divisor"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 7
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range 0 17
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help
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PLL P Output divisor, allowed values: 0, 7, 17.
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config CLOCK_STM32_PLL_Q_DIVISOR
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int "PLL Q Divisor"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 2
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range 0 8
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help
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PLL Q Output divisor, allowed values: 0, 2, 4, 6, 8.
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config CLOCK_STM32_PLL_R_DIVISOR
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int "PLL R Divisor"
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depends on CLOCK_STM32_SYSCLK_SRC_PLL
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default 4
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range 0 8
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help
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PLL R Output divisor, allowed values: 0, 2, 4, 6, 8.
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endif # SOC_SERIES_STM32L4X
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config CLOCK_STM32_AHB_PRESCALER
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int "AHB prescaler"
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default 0
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range 0 512
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help
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AHB prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128,
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256, 512.
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config CLOCK_STM32_APB1_PRESCALER
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int "APB1 prescaler"
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default 1
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range 1 16
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help
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APB1 Low speed clock (PCLK1) prescaler, allowed values:
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1, 2, 4, 8, 16
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config CLOCK_STM32_APB2_PRESCALER
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int "APB2 prescaler"
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default 1
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range 1 16
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help
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APB2 High speed clock (PCLK2) prescaler, allowed values:
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1, 2, 4, 8, 16
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endif # CLOCK_CONTROL_STM32_CUBE
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endif # SOC_FAMILY_STM32
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