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ASoC: rt5682: fix the random recording noise of headset 

The cycle time of FIFO clock should increase 2 times to avoid
the random recording noise issue.
This setting could apply to all known situations in i2s mode.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20200317073308.11572-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shuming Fan 2020-03-17 15:33:08 +08:00 committed by Mark Brown
parent 28ddd84607
commit 557270e8dc
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 4 additions and 0 deletions
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2
sound/soc/codecs/rt5682.c
View File

@ -2651,6 +2651,8 @@ static int rt5682_i2c_probe(struct i2c_client *i2c,
RT5682_CP_CLK_HP_MASK, RT5682_CP_CLK_HP_300KHZ);
regmap_update_bits(rt5682->regmap, RT5682_HP_CHARGE_PUMP_1,
RT5682_PM_HP_MASK, RT5682_PM_HP_HV);
regmap_update_bits(rt5682->regmap, RT5682_DMIC_CTRL_1,
RT5682_FIFO_CLK_DIV_MASK, RT5682_FIFO_CLK_DIV_2);
INIT_DELAYED_WORK(&rt5682->jack_detect_work,
rt5682_jack_detect_handler);

2
sound/soc/codecs/rt5682.h
View File

@ -651,6 +651,8 @@
#define RT5682_DMIC_1_EN_SFT 15
#define RT5682_DMIC_1_DIS (0x0 << 15)
#define RT5682_DMIC_1_EN (0x1 << 15)
#define RT5682_FIFO_CLK_DIV_MASK (0x7 << 12)
#define RT5682_FIFO_CLK_DIV_2 (0x1 << 12)
#define RT5682_DMIC_1_DP_MASK (0x3 << 4)
#define RT5682_DMIC_1_DP_SFT 4
#define RT5682_DMIC_1_DP_GPIO2 (0x0 << 4)