MIN_CHANNEL_NUM   505 sound/soc/dwc/dwc-i2s.c 		dw_i2s_dai->playback.channels_min = MIN_CHANNEL_NUM;
MIN_CHANNEL_NUM   519 sound/soc/dwc/dwc-i2s.c 		dw_i2s_dai->capture.channels_min = MIN_CHANNEL_NUM;