Help¶

When this option is activated, the buffers for DMA transfer are moved from SRAM to the DTCM (Data Tightly Coupled Memory).

Direct dependencies¶

SOC_SERIES_STM32F7X && ETH_STM32_HAL && NET_L2_ETHERNET

(Includes any dependencies from ifs and menus.)

Default¶

y

Kconfig definition¶

At drivers/ethernet/Kconfig.stm32_hal:38

Included via Kconfig:8 → Kconfig.zephyr:32 → drivers/Kconfig:20 → drivers/ethernet/Kconfig:52

Menu path: (Top) → Device Drivers → Ethernet Drivers → STM32 HAL Ethernet driver

config ETH_STM32_HAL_USE_DTCM_FOR_DMA_BUFFER
    bool "Use DTCM for DMA buffers"
    default y
    depends on SOC_SERIES_STM32F7X && ETH_STM32_HAL && NET_L2_ETHERNET
    help
      When this option is activated, the buffers for DMA transfer are
      moved from SRAM to the DTCM (Data Tightly Coupled Memory).

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)