On Mon, Feb 07, 2022 at 06:03:51PM +0100, Francesco Dolcini wrote: > On Mon, Feb 07, 2022 at 04:02:29PM +0000, Mark Brown wrote: > > On Mon, Feb 07, 2022 at 04:32:29PM +0100, Francesco Dolcini wrote: > > > This control inverts the signal fed to the right amplifier. > > > This allows to connect one loudspeaker to the two speaker amplifiers > > > in a bridge-tied load configuration getting higher output power. > > Is the value chosen for this not going to be a property of how the board > > is wired up, in which case it should be handled as a DT property rather > > than varied at runtime? > Not really, in our board we do have a L/R loudspeaker connector and the > end user either connects a mono speaker to the left and right channel > and enable this control to get more power out of it. Or you can just > connect a stereo speaker. > Enabling this control to me does not depend on the board. What do the physical connections for the speakers look like in this system, and more generally what sort of system is this? Most systems either have the speakers enclosed in the plastics with the rest of the system (which is obviously system specific) or have jacks/binding posts for connecting speaker which are labelled fairly clearly for one intended use. If this is some sort of raw/development board that's something where it's expected that people should be willing to configure DT for changes at the level of wiring tihngs up.
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