linux-kernel - [PATCH 4.18 068/135] ASoC: max98373: Added 10ms sleep after amp software reset

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Message-Id: <20181016170519.270818105@linuxfoundation.org>
Date:   Tue, 16 Oct 2018 19:04:58 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ryan Lee <ryans.lee@...imintegrated.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.18 068/135] ASoC: max98373: Added 10ms sleep after amp software reset

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ryan Lee <ryans.lee@...imintegrated.com>

[ Upstream commit ca917f9fe1a0fab3dde41bba4bbd173c5a3c5805 ]

Signed-off-by: Ryan Lee <ryans.lee@...imintegrated.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/soc/codecs/max98373.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/soc/codecs/max98373.c
+++ b/sound/soc/codecs/max98373.c
@@ -729,6 +729,7 @@ static int max98373_probe(struct snd_soc
 	/* Software Reset */
 	regmap_write(max98373->regmap,
 		MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET);
+	usleep_range(10000, 11000);
 
 	/* IV default slot configuration */
 	regmap_write(max98373->regmap,
@@ -817,6 +818,7 @@ static int max98373_resume(struct device
 
 	regmap_write(max98373->regmap,
 		MAX98373_R2000_SW_RESET, MAX98373_SOFT_RESET);
+	usleep_range(10000, 11000);
 	regcache_cache_only(max98373->regmap, false);
 	regcache_sync(max98373->regmap);
 	return 0;