From: Ryan Lee <ryans....@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....@maximintegrated.com> Link: https://lore.kernel.org/r/20210325033555.29377-2-ryans....@maximintegrated.com Signed-off-by: Mark Brown <broo...@kernel.org> Signed-off-by: Sasha Levin <sas...@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 929bb1798c43..1fd4dbbb4ecf 100644 --- a/sound/soc/codecs/max98373.c +++ b/sound/soc/codecs/max98373.c @@ -28,11 +28,13 @@ 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: -- 2.30.2
