zephyr/soc/st/stm32/Kconfig.defconfig
Alain Volmat 7640180e7c soc: st: stm32: set default SMH attribute for LTDC/video buffers
The SMH attribute when using the XSPI PSRAM is set to EXTERNAL (2)
within the driver hence set default for both LTDC and video
buffer SMH attribute to 2 if all conditions are validated.

Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
2025-06-19 13:57:51 +02:00

101 lines
3.8 KiB
Text

# ST Microelectronics STM32 all MCU lines
# Copyright (c) 2017, I-SENSE group of ICCS
# SPDX-License-Identifier: Apache-2.0
# Default configurations appplied tp the whole STM32 family
if SOC_FAMILY_STM32
# Source series Kconfig files first, so SoCs
# can override the defaults given here
rsource "*/Kconfig.defconfig"
config CACHE_STM32
default y if EXTERNAL_CACHE
config CLOCK_CONTROL
default y
config CORTEX_M_SYSTICK
default n if STM32_LPTIM_TIMER
DT_STM32_RCC_PATH := $(dt_nodelabel_path,rcc)
DT_STM32_RCC_CLOCK_FREQ := $(dt_node_int_prop_int,$(DT_STM32_RCC_PATH),clock-frequency)
DT_ST_PRESCALER := st,prescaler
DT_STM32_LPTIM_PATH := $(dt_nodelabel_path,stm32_lp_tick_source)
DT_CHOSEN_Z_FLASH := zephyr,flash
DT_COMPAT_XSPI := st,stm32-xspi
DT_CHOSEN_FLASH_NODE := $(dt_chosen_path,$(DT_CHOSEN_Z_FLASH))
DT_CHOSEN_FLASH_PARENT := $(dt_node_parent,$(DT_CHOSEN_FLASH_NODE))
DT_FLASH_PARENT_IS_XSPI := $(dt_node_has_compat,$(DT_CHOSEN_FLASH_PARENT),$(DT_COMPAT_XSPI))
config SYS_CLOCK_HW_CYCLES_PER_SEC
default "$(DT_STM32_RCC_CLOCK_FREQ)" if "$(dt_nodelabel_enabled,rcc)"
config LOG_BACKEND_SWO_REF_FREQ_HZ
default "$(DT_STM32_RCC_CLOCK_FREQ)" if "$(dt_nodelabel_enabled,rcc)"
depends on LOG_BACKEND_SWO
# If sysclock is not LPTIM, tick of 10000 is too high for a frequency lower than 32MHz
config SYS_CLOCK_TICKS_PER_SEC
default 8000 if SYS_CLOCK_HW_CYCLES_PER_SEC <= 32000000
depends on !STM32_LPTIM_TIMER
# set the tick per sec as a divider of the LPTIM clock source
# with a minimum value of 4096 for SYS_CLOCK_TICKS_PER_SEC to keep
# SYS_CLOCK_TICKS_PER_SEC not too high compared to the LPTIM counter clock
config SYS_CLOCK_TICKS_PER_SEC
default 4096 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" < 16
default 2048 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 16
default 1024 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 32
default 512 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 64
default 256 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 128
depends on STM32_LPTIM_TIMER && STM32_LPTIM_CLOCK_LSE
config SYS_CLOCK_TICKS_PER_SEC
default 4000 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" < 16
default 2000 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 16
default 1000 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 32
default 500 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 64
default 250 if "$(dt_node_int_prop_int,$(DT_STM32_LPTIM_PATH),$(DT_ST_PRESCALER))" = 128
depends on STM32_LPTIM_TIMER && STM32_LPTIM_CLOCK_LSI
choice STM32_LPTIM_CLOCK
default STM32_LPTIM_CLOCK_LSE if "$(dt_node_ph_array_prop_int,$(DT_STM32_LPTIM_PATH),clocks,1,bus)" = 2
default STM32_LPTIM_CLOCK_LSI if "$(dt_node_ph_array_prop_int,$(DT_STM32_LPTIM_PATH),clocks,1,bus)" = 3
endchoice
config CLOCK_CONTROL_INIT_PRIORITY
default 1
depends on CLOCK_CONTROL
# Get flash configuration for NS image from dts flash partition
config USE_DT_CODE_PARTITION
default y if TRUSTED_EXECUTION_NONSECURE
config BUILD_WITH_TFM
default y if TRUSTED_EXECUTION_NONSECURE
config FLASH_BASE_ADDRESS
default $(dt_node_reg_addr_hex,$(DT_CHOSEN_FLASH_PARENT),1) \
if $(DT_FLASH_PARENT_IS_XSPI)
default $(dt_chosen_reg_addr_hex,$(DT_CHOSEN_Z_FLASH))
# The XSPI PSRAM driver creates a SMH region with attribute SMH_REG_ATTR_EXTERNAL (2)
# If applicable set the LTDC / VIDEO_BUFFER SMH attribute to SMH_REG_ATTR_EXTERNAL (2)
# in order to be able to allocate from the XSPI PSRAM
if MEMC_STM32_XSPI_PSRAM && SHARED_MULTI_HEAP
config STM32_LTDC_FB_SMH_ATTRIBUTE
default 2 if STM32_LTDC_FB_USE_SHARED_MULTI_HEAP
config VIDEO_BUFFER_SMH_ATTRIBUTE
default 2 if VIDEO_BUFFER_USE_SHARED_MULTI_HEAP
endif # MEMC_STM32_XSPI_PSRAM && SHARED_MULTI_HEAP
endif # SOC_FAMILY_STM32