On Thu, May 24, 2012 at 08:21:25AM +0200, Ola Lilja wrote:
Well, yes. One of the control enables/disables the ability to use another charge-pump voltage when the signal gets over a certain threshold. The other parameters are tuning of this theshold and responsiveness. This feature can be changed during runtime depending of quality vs. powersaving needs.
Right, this is what I had expected except usually the consequence of the charge pump voltage failing to adapt rapidly enough is clipping which is normally considered unacceptably bad in any situation so with most devices there isn't much opportunity to tune the responsiveness. You do see on/off controls that get used for configurations the device can't handle for some reason but the responsiveness parameters that work are normally a static property of the device.
I guess you might be able to do something slightly more aggressive for voice perhaps... Anyway, like I say the main thing here is surprise at seeing these things user tunable.