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drivers: can: stm32fd: add clock source selection

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Add support for selecting the CAN clock source. Change previously
hardcoded value of PCLK1 to HSE.

Fixes: #44985

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2022-04-20 15:12:09 +02:00 • committed by Carles Cufí
commit 322b436b30
2 changed files with 34 additions and 1 deletions
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23
drivers/can/Kconfig.stm32fd
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@ -29,6 +29,29 @@ config CAN_MAX_EXT_ID_FILTER
Defines the maximum number of filters with extended ID (29-bit)
that can be attached.
choice CAN_STM32FD_CLOCK_SOURCE
prompt "CAN clock source"
default CAN_STM32FD_CLOCK_SOURCE_HSE
help
CAN clock source selection.
config CAN_STM32FD_CLOCK_SOURCE_HSE
bool "HSE"
help
HSE clock used as FDCAN clock source.
config CAN_STM32FD_CLOCK_SOURCE_PLL
bool "PLL"
help
PLL "Q" clock used ad FDCAN clock source.
config CAN_STM32FD_CLOCK_SOURCE_PCLK1
bool "PCLK1"
help
PCLK1 clock used ad FDCAN clock source.
endchoice
config CAN_STM32_CLOCK_DIVISOR
int "CAN clock divisor"
range 1 30