[PATCH 4/4] ASoC: wm8904: add DMIC support

[Pierluigi Passaro]

> > > Via firmware description.

> > Can you please provide any reference approach in the kernel code ?

> git grep of_
> git grep fwnode_

> and I don't immediately remember what the prefix is for ACPI functions.

Just for my understanding, are you suggesting to set a device tree property to force a fixed behavior in the driver ?
WM8904 allows using both a DMIC and LINEIN, switching between one or the other and this is how we currently use it.
Why the user should not be allowed to switch between DMIC and LINEIN ?