Applied "ASoC: tlv320aic3x: Add delay after power on and register sync" to the asoc tree
diff mbox

Message ID E1cNPBO-0003u1-Ha@debutante
State Not Applicable
Headers show

Commit Message

Mark Brown Dec. 31, 2016, 7:19 p.m. UTC
The patch

   ASoC: tlv320aic3x: Add delay after power on and register sync

has been applied to the asoc tree at


All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
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From 03303da5243f394f5cc5e530a8bc9f26ad2c79cb Mon Sep 17 00:00:00 2001
From: Peter Ujfalusi <>
Date: Fri, 23 Dec 2016 11:21:11 +0200
Subject: [PATCH] ASoC: tlv320aic3x: Add delay after power on and register sync

When the codec is powered on, it's registers are in reset state as the
power off will do a soft reset of the codec.

After the register sync we need to add delay to remove the pop-noise on
stream start.

Signed-off-by: Peter Ujfalusi <>
Signed-off-by: Mark Brown <>
 sound/soc/codecs/tlv320aic3x.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff mbox

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index bb94d50052d7..29bf8c81ae02 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -1393,6 +1393,12 @@  static int aic3x_set_power(struct snd_soc_codec *codec, int power)
 			snd_soc_write(codec, AIC3X_PLL_PROGC_REG, pll_c);
 			snd_soc_write(codec, AIC3X_PLL_PROGD_REG, pll_d);
+		/*
+		 * Delay is needed to reduce pop-noise after syncing back the
+		 * registers
+		 */
+		mdelay(50);
 	} else {
 		 * Do soft reset to this codec instance in order to clear