From d070f7c703ef26e3db613f24206823f916272fc6 Mon Sep 17 00:00:00 2001
From: Abhijeet Kumar <abhijeet.kumar@intel.com>
Date: Tue, 12 Dec 2017 00:40:25 +0530
Subject: [PATCH] ASoC: nau8825: fix issue that pop noise when start capture
Git-commit: d070f7c703ef26e3db613f24206823f916272fc6
Patch-mainline: v4.15-rc6
References: bsc#1051510

In skylake platform, we hear a loud pop noise(0 dB) at start of
audio capture power up sequence. This patch removes the pop noise
from the recording by adding a delay before enabling ADC.

Signed-off-by: Abhijeet Kumar <abhijeet.kumar@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/codecs/nau8825.c |    1 +
 1 file changed, 1 insertion(+)

--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -905,6 +905,7 @@ static int nau8825_adc_event(struct snd_
 
 	switch (event) {
 	case SND_SOC_DAPM_POST_PMU:
+		msleep(125);
 		regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
 			NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
 		break;