2 files changed, 5 insertions, 0 deletions

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 3cc1135fc2cd..0a7378f81acb 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2407,6 +2407,9 @@ static int rt5640_i2c_probe(struct i2c_client *i2c,
         if (ret != 0)
                 dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);
 
+        regmap_update_bits(rt5640->regmap, RT5640_DUMMY1,
+                                RT5640_MCLK_DET, RT5640_MCLK_DET);
+
         if (rt5640->pdata.in1_diff)
                 regmap_update_bits(rt5640->regmap, RT5640_IN1_IN2,
                                         RT5640_IN_DF1, RT5640_IN_DF1);
diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h
index 90c88711c72a..22c017c58d5b 100644
--- a/sound/soc/codecs/rt5640.h
+++ b/sound/soc/codecs/rt5640.h
@@ -1970,6 +1970,8 @@
 #define RT5640_ZCD_HP_DIS                       (0x0 << 15)
 #define RT5640_ZCD_HP_EN                        (0x1 << 15)
 
+/* General Control 1 (0xfa) */
+#define RT5640_MCLK_DET                         (0x1 << 11)
 
 /* Codec Private Register definition */
 /* 3D Speaker Control (0x63) */