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No, the machine driver should be configuring different TDM slots for each device - that's the whole point of the API.

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We are using multiple codecs as a single device.So we can't use set_tdm_slot to configure different slots for multiple codecs under one device.

What do you mean by using it "as a single device"? Multiple CODECs on the same link is the main use case for set_tdm_slot().

Thanks for the advice.The method you mentioned could work. I will modify my driver.