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drivers/clock_control: stm32: Split Kconfig file
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In order ease readability of Kconfig.stm32 file, split series
specific PLL configuration options into series specifc Kconfig
files.
This being done, we have now a similar pattern for series specific
code and series specific Kconfig files.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
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@erwango @nashif
erwango authored and nashif committed Jun 10, 2019
1 parent 37c13ee commit 4a3793f
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Showing 6 changed files with 246 additions and 266 deletions.
279 changes: 13 additions & 266 deletions drivers/clock_control/Kconfig.stm32
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Original file line number Original file line Diff line number Diff line change
Expand Up @@ -116,269 +116,17 @@ config CLOCK_STM32_PLL_SRC_PLL2


endchoice endchoice


if SOC_SERIES_STM32F0X


config CLOCK_STM32_PLL_PREDIV # Source series specific files for PLL settings
int "PREDIV Prescaler"
default 1
range 1 16
help
PREDIV is PLLSCR clock signal prescaler, allowed values: 1 - 16.

config CLOCK_STM32_PLL_PREDIV1
int "PREDIV1 Prescaler"
depends on CLOCK_STM32_PLL_SRC_HSE
default 1
range 1 16
help
PREDIV is PLLSCR clock signal prescaler, present on STM32F0 SoC having
an HSE Oscillator available like the stm32f04xx, stm32f07xx,
stm32f09xx and stm32f030xc parts. If configured on a non supported
part, the HSI oscillator will be used a default PLL source and this
config will be ignored.
Allowed values: 1 - 16.

config CLOCK_STM32_PLL_MULTIPLIER
int "PLL multiplier"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 6
range 2 16
help
PLL multiplier, allowed values: 2-16. PLL output must not exceed 48MHz.

endif # SOC_SERIES_STM32F0X


if SOC_SERIES_STM32F1X source "drivers/clock_control/Kconfig.stm32f0_f3"
source "drivers/clock_control/Kconfig.stm32f1"
source "drivers/clock_control/Kconfig.stm32f2_f4_f7"
source "drivers/clock_control/Kconfig.stm32l0_l1"
source "drivers/clock_control/Kconfig.stm32l4_wb"


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 # Bus clocks configuration options
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.

config CLOCK_STM32_PLL2_MULTIPLIER
int "PLL2 multiplier"
depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_PLL_SRC_PLL2
default 8
range 8 20
help
PLL2 multiplier, allowed values: 8 - 20. 15-17-18-19 reserved

config CLOCK_STM32_PLL2_PREDIV2
int "PREDIV2 Prescaler"
depends on SOC_STM32F10X_CONNECTIVITY_LINE_DEVICE && CLOCK_STM32_PLL_SRC_PLL2
default 1
range 1 16
help
PREDIV2 is PLL2 prescaler, allowed values: 1 - 16.

endif # SOC_SERIES_STM32F1X

if SOC_SERIES_STM32F2X

config CLOCK_STM32_PLL_M_DIVISOR
int "Division factor for PLL VCO input clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 20
range 2 63
help
PLLM division factor needs to be set correctly to ensure that the VCO
input frequency ranges from 1 to 2 MHz. It is recommended to select a
frequency of 2 MHz to limit PLL jitter.
Allowed values: 2-63

config CLOCK_STM32_PLL_N_MULTIPLIER
int "Multiplier factor for PLL VCO output clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 192
range 192 432
help
PLLN multiplier factor needs to be set correctly to ensure that the
VCO output frequency is between 192 and 432 MHz.

config CLOCK_STM32_PLL_P_DIVISOR
int "PLL division factor for main system clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 2
range 2 8
help
PLLP division factor needs to be set correctly to not exceed 120MHz.
Allowed values: 2, 4, 6, 8

config CLOCK_STM32_PLL_Q_DIVISOR
int "PLL division factor for USB OTG FS, SDIO and RNG clocks"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 5
range 2 15
help
The USB OTG FS requires a 48MHz clock to work correctly. SDIO and RNG
need a frequency lower than or equal to 48 MHz to work correctly.
Allowed values: 2-15

endif # SOC_SERIES_STM32F2X

if SOC_SERIES_STM32F3X

config CLOCK_STM32_PLL_PREDIV
int "PREDIV Prescaler"
default 1
range 1 16
help
PREDIV is PLLSCR clock signal prescaler, allowed values: 1 - 16.

config CLOCK_STM32_PLL_MULTIPLIER
int "PLL multiplier"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 9
range 2 16
help
PLL multiplier, allowed values: 2-16. PLL output must not exceed 72MHz.

endif # SOC_SERIES_STM32F3X

if SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X

config CLOCK_STM32_PLL_M_DIVISOR
int "Division factor for PLL VCO input clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 8
range 2 63
help
PLLM division factor needs to be set correctly to ensure that the VCO
input frequency ranges from 1 to 2 MHz. It is recommended to select a
frequency of 2 MHz to limit PLL jitter.
Allowed values: 2-63

config CLOCK_STM32_PLL_N_MULTIPLIER
int "Multiplier factor for PLL VCO output clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 336
range 192 432 if SOC_STM32F401XE
range 50 432
help
PLLN multiplier factor needs to be set correctly to ensure that the
VCO output frequency is between 100 and 432 MHz, except on STM32F401
where the frequency must be between 192 and 432 MHz.
Allowed values: 50-432 (STM32F401: 192-432)

config CLOCK_STM32_PLL_P_DIVISOR
int "PLL division factor for main system clock"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 4
range 2 8
help
PLLP division factor needs to be set correctly to not exceed 84MHz.
Allowed values: 2, 4, 6, 8

config CLOCK_STM32_PLL_Q_DIVISOR
int "Division factor for OTG FS, SDIO and RNG clocks"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 7
range 2 15
help
The USB OTG FS requires a 48MHz clock to work correctly. SDIO and RNG
need a frequency lower than or equal to 48 MHz to work correctly.
Allowed values: 2-15

endif # SOC_SERIES_STM32F4X || SOC_SERIES_STM32F7X

if SOC_SERIES_STM32L0X || SOC_SERIES_STM32L1X

config CLOCK_STM32_PLL_MULTIPLIER
int "PLL multiplier"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 4
range 3 48
help
PLL multiplier, allowed values: 3, 4, 6, 8, 12, 16, 24, 32, 48.
PLL output must not exceed 96MHz(1.8V)/48MHz(1.5V)/24MHz(1.2V).

config CLOCK_STM32_PLL_DIVISOR
int "PLL divisor"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 2
range 2 4
help
PLL divisor, allowed values: 2-4.

endif # SOC_SERIES_STM32L0X || SOC_SERIES_STM32L1X

if SOC_SERIES_STM32L4X || SOC_SERIES_STM32WBX

config CLOCK_STM32_PLL_M_DIVISOR
int "PLL divisor"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 1
range 1 8
help
PLL divisor, allowed values: 1-8. With this ensure that the PLL
VCO input frequency ranges from 4 to 16MHz.

config CLOCK_STM32_PLL_N_MULTIPLIER
int "PLL multiplier"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 20
range 8 86
help
PLL multiplier, allowed values: 2-16. PLL output must not
exceed 344MHz.

config CLOCK_STM32_PLL_P_DIVISOR
int "PLL P Divisor"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 7
range 0 17
help
PLL P Output divisor, allowed values: 0, 7, 17.

config CLOCK_STM32_PLL_Q_DIVISOR
int "PLL Q Divisor"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 2
range 0 8
help
PLL Q Output divisor, allowed values: 0, 2, 4, 6, 8.

config CLOCK_STM32_PLL_R_DIVISOR
int "PLL R Divisor"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 4
range 0 8
help
PLL R Output divisor, allowed values: 0, 2, 4, 6, 8.

config CLOCK_STM32_LSE
bool "Low-speed external clock"
help
Enable the low-speed external (LSE) clock supplied with a 32.768 kHz
crystal resonator oscillator.

config CLOCK_STM32_MSI_PLL_MODE
bool "MSI PLL MODE"
depends on CLOCK_STM32_LSE
help
Enable hardware auto-calibration with LSE.

endif # SOC_SERIES_STM32L4X || SOC_SERIES_STM32WBX


config CLOCK_STM32_AHB_PRESCALER config CLOCK_STM32_AHB_PRESCALER
int "AHB prescaler" int "AHB prescaler"
Expand All @@ -397,24 +145,20 @@ config CLOCK_STM32_APB1_PRESCALER
APB1 Low speed clock (PCLK1) prescaler, allowed values: APB1 Low speed clock (PCLK1) prescaler, allowed values:
1, 2, 4, 8, 16 1, 2, 4, 8, 16


if SOC_SERIES_STM32F0X!=y

config CLOCK_STM32_APB2_PRESCALER config CLOCK_STM32_APB2_PRESCALER
int "APB2 prescaler" int "APB2 prescaler"
default 1 default 1
range 1 16 range 1 16
depends on !SOC_SERIES_STM32F0X
help help
APB2 High speed clock (PCLK2) prescaler, allowed values: APB2 High speed clock (PCLK2) prescaler, allowed values:
1, 2, 4, 8, 16 1, 2, 4, 8, 16


endif # SOC_SERIES_STM32F0X!=y

if SOC_SERIES_STM32WBX

config CLOCK_STM32_CPU1_PRESCALER config CLOCK_STM32_CPU1_PRESCALER
int "CPU1 HCLK prescaler" int "CPU1 HCLK prescaler"
default 1 default 1
range 1 512 range 1 512
depends on SOC_SERIES_STM32WBX
help help
CPU1 HCLK prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128, CPU1 HCLK prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128,
256, 512. 256, 512.
Expand All @@ -423,6 +167,7 @@ config CLOCK_STM32_CPU2_PRESCALER
int "CPU2 HCLK prescaler" int "CPU2 HCLK prescaler"
default 1 default 1
range 1 512 range 1 512
depends on SOC_SERIES_STM32WBX
help help
CPU2 HCLK prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128, CPU2 HCLK prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128,
256, 512. 256, 512.
Expand All @@ -431,11 +176,13 @@ config CLOCK_STM32_AHB4_PRESCALER
int "AHB4 HCLK prescaler" int "AHB4 HCLK prescaler"
default 1 default 1
range 1 512 range 1 512
depends on SOC_SERIES_STM32WBX
help help
HCLK4 prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128, HCLK4 prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128,
256, 512. 256, 512.


endif # SOC_SERIES_STM32WBX
# Micro-controller Clock output configuration options


choice choice
prompt "STM32 MCO1 Clock Source" prompt "STM32 MCO1 Clock Source"
Expand Down
39 changes: 39 additions & 0 deletions drivers/clock_control/Kconfig.stm32f0_f3
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Original file line number Original file line Diff line number Diff line change
@@ -0,0 +1,39 @@
# Kconfig - STM32F0 and STM32F3 PLL configuration options
#
# Copyright (c) 2019 Linaro
#
# SPDX-License-Identifier: Apache-2.0
#

if SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X

config CLOCK_STM32_PLL_PREDIV
int "PREDIV Prescaler"
default 1
range 1 16
help
PREDIV is PLLSCR clock signal prescaler, allowed values: 1 - 16.

config CLOCK_STM32_PLL_PREDIV1
int "PREDIV1 Prescaler"
depends on CLOCK_STM32_PLL_SRC_HSE
depends on SOC_SERIES_STM32F0X
default 1
range 1 16
help
PREDIV is PLLSCR clock signal prescaler, present on STM32F0 SoC having
an HSE Oscillator available like the stm32f04xx, stm32f07xx,
stm32f09xx and stm32f030xc parts. If configured on a non supported
part, the HSI oscillator will be used a default PLL source and this
config will be ignored.
Allowed values: 1 - 16.

config CLOCK_STM32_PLL_MULTIPLIER
int "PLL multiplier"
depends on CLOCK_STM32_SYSCLK_SRC_PLL
default 6
range 2 16
help
PLL multiplier, allowed values: 2-16. PLL output must not exceed 48MHz.

endif # SOC_SERIES_STM32F0X || SOC_SERIES_STM32F3X
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