From: Ryan Lee ryans.lee@maximintegrated.com

[ Upstream commit 3a27875e91fb9c29de436199d20b33f9413aea77 ]

Amp requires 10 ~ 30ms for the power ON and OFF. Added 30ms delay for stability.

Signed-off-by: Ryan Lee ryans.lee@maximintegrated.com Link: https://lore.kernel.org/r/20210325033555.29377-2-ryans.lee@maximintegrated.c... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/codecs/max98373.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/sound/soc/codecs/max98373.c b/sound/soc/codecs/max98373.c index 96718e3a1ad0..16fbc9faed90 100644 --- a/sound/soc/codecs/max98373.c +++ b/sound/soc/codecs/max98373.c @@ -410,11 +410,13 @@ static int max98373_dac_event(struct snd_soc_dapm_widget *w, regmap_update_bits(max98373->regmap, MAX98373_R20FF_GLOBAL_SHDN, MAX98373_GLOBAL_EN_MASK, 1); + usleep_range(30000, 31000); break; case SND_SOC_DAPM_POST_PMD: regmap_update_bits(max98373->regmap, MAX98373_R20FF_GLOBAL_SHDN, MAX98373_GLOBAL_EN_MASK, 0); + usleep_range(30000, 31000); max98373->tdm_mode = false; break; default: