diff --git a/[refs] b/[refs]
index a6412f12e90a..081f8ba23af9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 759512fbacfbb6fd9b7f77f9806fb4995775848f
+refs/heads/master: 5e5e2bef287b96ab29d2d93e89ecf0888323d7bf
diff --git a/trunk/sound/soc/codecs/wm8994.c b/trunk/sound/soc/codecs/wm8994.c
index cdfbfb633f30..f04a116e678b 100644
--- a/trunk/sound/soc/codecs/wm8994.c
+++ b/trunk/sound/soc/codecs/wm8994.c
@@ -1769,6 +1769,11 @@ static int configure_aif_clock(struct snd_soc_codec *codec, int aif)
 		dev_dbg(codec->dev, "Dividing AIF%d clock to %dHz\n",
 			aif + 1, rate);
 	}
+
+	if (rate && rate < 3000000)
+		dev_warn(codec->dev, "AIF%dCLK is %dHz, should be >=3MHz for optimal performance\n",
+			 aif + 1, rate);
+
 	wm8994->aifclk[aif] = rate;
 
 	snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1 + offset,