esp-idf/components/esp_driver_rmt/Kconfig

menu "ESP-Driver:RMT Configurations"
    depends on SOC_RMT_SUPPORTED
    config RMT_ISR_IRAM_SAFE
        bool "RMT ISR IRAM-Safe"
        default n
        select GDMA_ISR_IRAM_SAFE if SOC_RMT_SUPPORT_DMA     # RMT basic functionality relies on GDMA callback
        select GDMA_CTRL_FUNC_IN_IRAM if SOC_RMT_SUPPORT_DMA # RMT needs to restart the GDMA in the interrupt
        help
            Ensure the RMT interrupt is IRAM-Safe by allowing the interrupt handler to be
            executable when the cache is disabled (e.g. SPI Flash write).

    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 # RMT needs to start the GDMA in the receive function
        help
            Place RMT receive function into IRAM,
            so that the receive function can be IRAM-safe and able to be called when the flash cache is disabled.
            Enabling this option can improve driver performance as well.

    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