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各位专家：
tda4中的udma用于数据的快速搬移，在tda4提供的相关代码中（pdk&vision_apps），我发现只能在mcu和dsp中调用udma
在a72的linux中无法调用，所以想请教一下TI的专家，如何在linux中调用这个udma？
我把您的问题升级到英文e2e论坛了，因为国外节假日，回复可能会慢些。https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1183196/tda4vm-how-to-use-udma-in-linux-on-a72-core
请看下面工程师的回复。
There are many linux drivers which use UDMA as part of the driver code.
Can you please explain what is the usecase so that we can provide some references/suggestions?
