On Sat, Oct 24, 2020 at 02:41:25PM +0800, Jiaxin Yu wrote:
> We can choose to drop away any length of data from the beginning according
> to project needs. Some projects don't want to throw away any data, because
> they want to use recorded data to do echo cancellation, so they have to
> make sure that they are aligned with the reference data as much as
> possible. Or there are other algorithms in the upper layer to eliminate
> this noise. Or some projects want to eliminate this noise form the kernel
> layer. However, the minimum recommended value is 50ms to skip pop noise.

This seems like something that would apply equally to all DMICs so
should be done at a more general level rather than in this specific
driver, for example it could be done in the DMIC driver.