On Mon, Aug 17, 2020 at 10:57 AM S.j. Wang <shengjiu.wang@xxxxxxx> wrote: > I didn't put headphone detect GPIO in audmux group in imx6sl-evk patch, > Still in hog group. Ok, sorry. You grouped it with MX6SL_PAD_AUD_MCLK__AUDIO_CLK_OUT, which I also think should not be part of the hog group. > And I think headphone detect GPIO is not belong to audmux group, it should > Be in hog group. The hog group is better suited when there is no driver that can be associated with that particular pin. For the headphone GPIO detect, I think it makes sense to group it with the other audio-related pinctrl pins.