esp-idf/components/esp_driver_rmt/Kconfig

menu "ESP-Driver:RMT Configurations"
    depends on SOC_RMT_SUPPORTED
    config RMT_ISR_HANDLER_IN_IRAM
        bool "Place RMT ISR handler into IRAM"
        select GDMA_CTRL_FUNC_IN_IRAM if SOC_RMT_SUPPORT_DMA
        select RMT_OBJ_CACHE_SAFE
        default y
        help
            Place RMT ISR handler into IRAM for better performance and fewer cache misses.

    config RMT_RECV_FUNC_IN_IRAM
        bool "Place RMT receive function into IRAM"
        default n
        select GDMA_CTRL_FUNC_IN_IRAM if SOC_RMT_SUPPORT_DMA
        select RMT_OBJ_CACHE_SAFE
        help
            Place RMT receive function into IRAM for better performance and fewer cache misses.

    config RMT_ISR_CACHE_SAFE
        bool "RMT ISR Cache-Safe"
        select GDMA_ISR_IRAM_SAFE if SOC_RMT_SUPPORT_DMA
        select RMT_ISR_HANDLER_IN_IRAM
        default n
        help
            Ensure the RMT interrupt is Cache-Safe by allowing the interrupt handler to be
            executable when the cache is disabled (e.g. SPI Flash write).

    config RMT_OBJ_CACHE_SAFE
        bool
        default n
        help
            This will ensure the RMT object will not be allocated from a memory region
            where its cache can be disabled.

    config RMT_ENABLE_DEBUG_LOG
        bool "Enable debug log"
        default n
        help
            whether to enable the debug log message for RMT driver.
            Note that, this option only controls the RMT driver log, won't affect other drivers.
endmenu