default or selected kernelversion does not have config value CONFIG_ASYNC_TX_DISABLE_CHANNEL_SWITCH.
Result is shown for kernelversion 5.4.229
CONFIG_ASYNC_TX_DISABLE_CHANNEL_SWITCH (not configurable)
configname: CONFIG_ASYNC_TX_DISABLE_CHANNEL_SWITCH
Linux Kernel Configuration
└─>Device Drivers
└─>DMA Engine support
└─>ASYNC_TX_DISABLE_CHANNEL_SWITCH