On Wed, Sep 27, 2023 at 03:07:49AM +0000, Chancel Liu wrote:
This is a fairly standard DSP playback case as far as I can see so it should work with DAPM without needing this obviously use case specific stuff peering into the Linux implementation. Generally this is done by tagging endpoint widgets and DAIs as ignore_suspend, DAPM will then figure out the rest of the widgets in the path.
Yes, indeed I meant to let driver get DAPM endpoints from the "fsl,lpa-widgets" property and then set these endpoints as ignore_suspend if the sound card is running in this use case. Do you think the description for the use case can be simplified since it's a common use case?
This is a card problem - the driver for rpmsg shouldn't need to worry about it. Any bindings extensions should be at the card level rather than in a specific driver, we could probably use something in the generic properties that they're all using.