Hi Amadeusz, Yes, the original version I tried the implementation on audio machine driver, but one person gave me an idea for this dmic.c Do you think it is appropriate on dmic.c? If it isn't, I will add kcontrol into audio machine driver. thanks On Fri, Oct 28, 2022 at 7:44 PM Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx> wrote: > > On 10/28/2022 12:24 PM, Ajye Huang wrote: > > Having two DMICs, a front DMIC and a rear DMIC, > > but only host audio input AUX port0 is used for these two Dmics. > > A "dmic_sel-gpios" property is used for a mixer control to switch > > the dmic signal source between the Front and Rear Dmic. > > > > usage: amixer -c0 cset name='Dmic Mux' 'FrontMic' > > usage: amixer -c0 cset name='Dmic Mux' 'RearMic' > > > > Refer to this one as an example, > > commit 3cfbf07c6d27 > > ("ASoC: qcom: sc7180: Modify machine driver for 2mic") > > > > Signed-off-by: Ajye Huang <ajye_huang@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> > > --- > > > I'm very suspicious of this patchset. As it is you add kcontrol which > won't take effect on most platforms making use of DMIC. It feels to me > that it is something you want to handle on machine driver side instead. >