On Wed, Feb 11, 2015 at 05:05:52PM -0800, Kenneth Westfield wrote:

Replacing DSP-based drivers with LPASS-based drivers would be something that
should be handled by Kconfig selections.  For the DT, the DSP-related

No, it shouldn't be.  We should have the ability to build a single
kernel image which will run on many systems, including both your
system with a DSP and other systems without.

nodes and the LPASS-related nodes shouldn't overlap.  There should be a
DSP-based DT binding and a separate LPASS-based DT binding.  Tying one
or the other to the sound node (but not both), should work.

The selection of DSP use sounds like something which isn't part of the
description of the hardware but rather a runtime policy decision (at
least in so far as non-DSP is ever an option).