On Fri, Jul 28, 2017 at 02:54:59PM +0100, Srinivas Kandagatla wrote: > On 28/07/17 14:40, Mark Brown wrote: > > On Wed, Jul 26, 2017 at 02:35:10AM +0200, srinivas.kandagatla@xxxxxxxxxx wrote: > > > From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> > > > This patch sets the default internal micbias voltage to 1.8v. This > > > default value is required for mbhc buttons to work. Also adds dt > > > bindings to allow the board level file to specify the required default > > > micbias value. > > What was the default previously? > This was set to 2.7v previously for special headsets which have high > impedance. So obviously this will break existing users. That's not OK.
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