On Mon, Jan 30, 2017 at 10:58:31AM +0100, Takashi Iwai wrote: > On Thu, 29 Dec 2016 09:23:47 +0100, > > Some project use external circuit to prevent the headset ground noise. > > It will need to use GPIO to control it. Dell Wyse 3040 is the only project > > that has the external circuit so far and it uses GPIO2 for that. This patch > > provide the support fot it. > Mark, this seems overlooked? No, it's complicated. IIRC it's not *actually* doing GPIO management, it's adding an option to wiggle a pin on the one board you've so far that happens to have this issue but if someone finds a GPIO from somewhere else it'll run into trouble. But now when I go look at it again you sent a content free ping so...
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