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soc: st: stm32: set default SMH attribute for LTDC/video buffers

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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>
This commit is contained in:
Alain Volmat 2025-06-17 11:17:24 +02:00 • committed by Benjamin Cabé
commit 7640180e7c
1 changed files with 13 additions and 0 deletions
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13
soc/st/stm32/Kconfig.defconfig
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@ -85,4 +85,17 @@ config FLASH_BASE_ADDRESS
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