diff --git a/ac101.c b/ac101.c
index 26aa9e3..3a95203 100644
--- a/ac101.c
+++ b/ac101.c
@@ -376,7 +376,7 @@ static int ac101_switch_probe(struct ac10x_priv *ac10x) {
 
 	ac10x->irq = gpiod_to_irq(ac10x->gpiod_irq);
 	if (IS_ERR_VALUE(ac10x->irq)) {
-		pr_info("[ac101] map gpio to irq failed, errno = %ld\n", ac10x->irq);
+		pr_warn("[ac101] map gpio to irq failed, errno = %ld\n", ac10x->irq);
 		ac10x->irq = 0;
 		goto _err_irq;
 	}
@@ -384,7 +384,7 @@ static int ac101_switch_probe(struct ac10x_priv *ac10x) {
 	/* request irq, set irq type to falling edge trigger */
 	ret = devm_request_irq(ac10x->codec->dev, ac10x->irq, audio_hmic_irq, IRQF_TRIGGER_FALLING, "SWTICH_EINT", ac10x);
 	if (IS_ERR_VALUE(ret)) {
-		pr_info("[ac101] request virq %ld failed, errno = %ld\n", ac10x->irq, ret);
+		pr_warn("[ac101] request virq %ld failed, errno = %ld\n", ac10x->irq, ret);
 		goto _err_irq;
 	}
 
@@ -1152,14 +1152,14 @@ int ac101_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 	switch(fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 	case SND_SOC_DAIFMT_CBM_CFM:   /* codec clk & frm master, ap is slave*/
 		#if _MASTER_MULTI_CODEC == _MASTER_AC101
-		pr_warn("AC101 as Master\n");
+		pr_info("AC101 as Master\n");
 		reg_val |= (0x0<<AIF1_MSTR_MOD);
 		break;
 		#else
-		pr_warn("AC108 as Master\n");
+		pr_info("AC108 as Master\n");
 		#endif
 	case SND_SOC_DAIFMT_CBS_CFS:   /* codec clk & frm slave, ap is master*/
-		pr_warn("AC101 as Slave\n");
+		pr_info("AC101 as Slave\n");
 		reg_val |= (0x1<<AIF1_MSTR_MOD);
 		break;
 	default:
diff --git a/ac108.c b/ac108.c
index ee5f3fd..67edeae 100644
--- a/ac108.c
+++ b/ac108.c
@@ -810,6 +810,9 @@ static int ac108_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int fr
 
 	struct ac10x_priv *ac10x = snd_soc_dai_get_drvdata(dai);
 
+	if (freq != 24000000 || clk_id != SYSCLK_SRC_PLL)
+		dev_warn(dai->dev, "ac108_set_sysclk freq = %d clk = %d\n", freq, clk_id);
+
 	freq = 24000000;
 	clk_id = SYSCLK_SRC_PLL;
 
diff --git a/seeed-4mic-voicecard-overlay.dts b/seeed-4mic-voicecard-overlay.dts
index de7213b..db0b988 100644
--- a/seeed-4mic-voicecard-overlay.dts
+++ b/seeed-4mic-voicecard-overlay.dts
@@ -13,7 +13,7 @@
 	};
 
 	fragment@1 {
-		target-path = "/clocks";
+		target-path = "/";
 		__overlay__ {
 			ac108_mclk: codec-mclk {
 				compatible = "fixed-clock";
diff --git a/seeed-4mic-voicecard.dtbo b/seeed-4mic-voicecard.dtbo
index 764dc80..09ee566 100644
Binary files a/seeed-4mic-voicecard.dtbo and b/seeed-4mic-voicecard.dtbo differ
diff --git a/seeed-8mic-voicecard-overlay.dts b/seeed-8mic-voicecard-overlay.dts
index 6d60469..56a1433 100644
--- a/seeed-8mic-voicecard-overlay.dts
+++ b/seeed-8mic-voicecard-overlay.dts
@@ -13,7 +13,7 @@
 	};
 
 	fragment@1 {
-		target-path = "/clocks";
+		target-path = "/";
 		__overlay__ {
 			ac10x_mclk: codec-mclk {
 				compatible = "fixed-clock";
diff --git a/seeed-8mic-voicecard.dtbo b/seeed-8mic-voicecard.dtbo
index 4ef515b..2dcaa93 100644
Binary files a/seeed-8mic-voicecard.dtbo and b/seeed-8mic-voicecard.dtbo differ
diff --git a/seeed-voicecard.c b/seeed-voicecard.c
index 385bb43..aeae8f4 100644
--- a/seeed-voicecard.c
+++ b/seeed-voicecard.c
@@ -322,10 +322,8 @@ static int asoc_simple_init_dai(struct snd_soc_dai *dai,
 	}
 
 	if (simple_dai->slots) {
-		ret = snd_soc_dai_set_tdm_slot(dai,
-					       simple_dai->tx_slot_mask,
-					       simple_dai->rx_slot_mask,
-					       simple_dai->slots,
+		ret = snd_soc_dai_set_bclk_ratio(dai,
+					       simple_dai->slots *
 					       simple_dai->slot_width);
 		if (ret && ret != -ENOTSUPP) {
 			dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
@@ -457,8 +455,6 @@ static int seeed_voice_card_dai_link_of(struct device_node *node,
 	#else
 	ret = asoc_simple_parse_clk_codec(dev, codec, dai_link, codec_dai);
 	#endif
-	if (!strncmp(dai_link->codecs->dai_name, "ac10", 4))
-		codec_dai->sysclk = 24000000;
 	if (ret < 0)
 		goto dai_link_of_err;
 
diff --git a/uninstall.sh b/uninstall.sh
index 6b9f8d1..a00f7a1 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -53,6 +53,7 @@ do_overlay() {
 
 RPI_HATS="seeed-2mic-voicecard seeed-4mic-voicecard seeed-8mic-voicecard"
 
+PATH=$PATH:/opt/vc/bin
 echo "remove dtbos"
 for i in $RPI_HATS; do
     dtoverlay -r $i
@@ -81,6 +82,9 @@ echo "remove kernel modules"
 rm  /lib/modules/*/kernel/sound/soc/codecs/snd-soc-wm8960.ko || true
 rm  /lib/modules/*/kernel/sound/soc/codecs/snd-soc-ac108.ko || true
 rm  /lib/modules/*/kernel/sound/soc/bcm/snd-soc-seeed-voicecard.ko || true
+rm  /lib/modules/*/updates/dkms/snd-soc-wm8960.ko || true
+rm  /lib/modules/*/updates/dkms/snd-soc-ac108.ko || true
+rm  /lib/modules/*/updates/dkms/snd-soc-seeed-voicecard.ko || true
 
 echo "remove $CONFIG configuration"
 for i in $RPI_HATS; do