On Fri, Nov 05, 2021 at 12:11:55PM +0800, Trevor Wu wrote:

On Thu, 2021-11-04 at 15:39 +0000, Mark Brown wrote:

quoted

I don't follow why the DSP support requires a new driver?  Shouldn't
all
systems with the DSP present be using it?

We need to keep the solution without DSP, so we can replace DSP
solution with non-DSP when it's required. But when we introduce SOF for
DSP control, there will be more routes in machine driver and device
tree usage is different from the original. So it's hard to share the
same driver for these two solutions.

We shouldn't be requiring people to load completely different drivers
based on software configuration, what if a system wants to bypass the
DSP in some but not all configurations?  Can we not just have controls
allowing users to route round the DSP where appropriate?