[alsa-devel] [PATCH] ASoC: rt5514: Eliminate the noise in the ASRC case

[Oder Chiou]

In the ASRC case, there is the noise if the clock is asynchronous with the
LRCK. The default settings will eliminate the noise.

Signed-off-by: Oder Chiou <oder_chiou at realtek.com>
---
 sound/soc/codecs/rt5514.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt5514.c b/sound/soc/codecs/rt5514.c
index 21cbb56..0eabe56 100644
--- a/sound/soc/codecs/rt5514.c
+++ b/sound/soc/codecs/rt5514.c
@@ -64,6 +64,8 @@ static const struct reg_sequence rt5514_patch[] = {
 	{RT5514_ANA_CTRL_LDO10,		0x00028604},
 	{RT5514_ANA_CTRL_ADCFED,	0x00000800},
 	{RT5514_ASRC_IN_CTRL1,		0x00000003},
+	{RT5514_DOWNFILTER0_CTRL3,	0x10000362},
+	{RT5514_DOWNFILTER1_CTRL3,	0x10000362},
 };
 
 static const struct reg_default rt5514_reg[] = {
@@ -89,10 +91,10 @@ static const struct reg_default rt5514_reg[] = {
 	{RT5514_DELAY_BUF_CTRL3,	0x00000000},
 	{RT5514_DOWNFILTER0_CTRL1,	0x00020c2f},
 	{RT5514_DOWNFILTER0_CTRL2,	0x00020c2f},
-	{RT5514_DOWNFILTER0_CTRL3,	0x00000362},
+	{RT5514_DOWNFILTER0_CTRL3,	0x10000362},
 	{RT5514_DOWNFILTER1_CTRL1,	0x00020c2f},
 	{RT5514_DOWNFILTER1_CTRL2,	0x00020c2f},
-	{RT5514_DOWNFILTER1_CTRL3,	0x00000362},
+	{RT5514_DOWNFILTER1_CTRL3,	0x10000362},
 	{RT5514_ANA_CTRL_LDO10,		0x00028604},
 	{RT5514_ANA_CTRL_LDO18_16,	0x02000345},
 	{RT5514_ANA_CTRL_ADC12,		0x0000a2a8},
-- 
2.7.4