On 28/07/17 15:01, Mark Brown wrote:
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@linaro.org wrote:
From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
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.
This would not break any exiting users, as this part is applicable for only headset detect usecase. I will try to address this in ("PATCH 5/6 ASoC: codecs: msm8916-wcd-analog: add MBHC support") patch.
The default voltage for most common usecase should be set to 1.8v anyway.