There is a power saving mechanism in rt5670. It will turn off some
unused power when MCLK is not present. We call that "MCLK detection"
and it should be enabled by default.
Signed-off-by: Bard Liao <bardliao@xxxxxxxxxxx>
---
sound/soc/codecs/rt5670.c | 4 +++-
sound/soc/codecs/rt5670.h | 1 +
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index 49caf13..6caac92 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -2889,6 +2889,9 @@ static int rt5670_i2c_probe(struct i2c_client *i2c,
if (ret != 0)
dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
+ regmap_update_bits(rt5670->regmap, RT5670_DIG_MISC,
+ RT5670_MCLK_DET, RT5670_MCLK_DET);
+
if (rt5670->pdata.in2_diff)
regmap_update_bits(rt5670->regmap, RT5670_IN2,
RT5670_IN_DF2, RT5670_IN_DF2);
@@ -2903,7 +2906,6 @@ static int rt5670_i2c_probe(struct i2c_client *i2c,
RT5670_GP1_PIN_MASK, RT5670_GP1_PIN_IRQ);
regmap_update_bits(rt5670->regmap, RT5670_GPIO_CTRL2,
RT5670_GP1_PF_MASK, RT5670_GP1_PF_OUT);
- regmap_update_bits(rt5670->regmap, RT5670_DIG_MISC, 0x8, 0x8);
}
if (rt5670->pdata.jd_mode) {
diff --git a/sound/soc/codecs/rt5670.h b/sound/soc/codecs/rt5670.h
index 3f1b0f1..5ba485c 100644
--- a/sound/soc/codecs/rt5670.h
+++ b/sound/soc/codecs/rt5670.h
@@ -1914,6 +1914,7 @@ enum {
#define RT5670_IF1_ADC1_IN2_SFT 11
#define RT5670_IF1_ADC2_IN1_SEL (0x1 << 10)
#define RT5670_IF1_ADC2_IN1_SFT 10
+#define RT5670_MCLK_DET (0x1 << 3)
/* General Control2 (0xfb) */
#define RT5670_RXDC_SRC_MASK (0x1 << 7)
--
1.8.1.1.439.g50a6b54
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