From: Ryan Lee <ryans.lee@maximintegrated.com>
To: lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz,
tiwai@suse.com, pierre-louis.bossart@linux.intel.com,
kai.vehmanen@linux.intel.com, yung-chuan.liao@linux.intel.com,
rander.wang@linux.intel.com, ryans.lee@maximintegrated.com,
guennadi.liakhovetski@linux.intel.com, vkoul@kernel.org,
yong.zhi@intel.com, judyhsiao@google.com,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Cc: ryan.lee.maxim@gmail.com
Subject: [PATCH 2/3] ASoC:codec:max98373: Added 30ms turn on/off time delay
Date: Wed, 24 Mar 2021 20:35:54 -0700 [thread overview]
Message-ID: <20210325033555.29377-2-ryans.lee@maximintegrated.com> (raw)
In-Reply-To: <20210325033555.29377-1-ryans.lee@maximintegrated.com>
Amp requires 10 ~ 30ms for the power ON and OFF.
Added 30ms delay for stability.
Signed-off-by: Ryan Lee <ryans.lee@maximintegrated.com>
---
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 746c829312b8..1346a98ce8a1 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:
--
2.17.1
next prev parent reply other threads:[~2021-03-25 3:37 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 3:35 [PATCH 1/3] ASoC:codec:max98373: Changed amp shutdown register as volatile Ryan Lee
2021-03-25 3:35 ` Ryan Lee [this message]
2021-03-25 3:35 ` [PATCH 3/3] ASoC:codec:max98373: Added controls for autorestart config Ryan Lee
2021-03-25 13:56 ` [PATCH 1/3] ASoC:codec:max98373: Changed amp shutdown register as volatile Mark Brown
2021-03-25 13:56 ` Mark Brown
2021-03-25 17:37 ` Mark Brown
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