diff --git a/ac108.c b/ac108.c
index 03589e4..cafc10e 100644
--- a/ac108.c
+++ b/ac108.c
@@ -848,7 +848,8 @@ static int ac108_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_h
 static int ac108_set_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) {
 
 	struct ac108_priv *ac108 = snd_soc_dai_get_drvdata(dai);
-
+	freq = 24000000;
+	clk_id = SYSCLK_SRC_PLL;
 	pr_info("%s  :%d\n", __FUNCTION__, freq);
 	switch (clk_id) {
 	case SYSCLK_SRC_MCLK:
diff --git a/ac108_asound.state b/ac108_asound.state
index d99f487..33fb369 100644
--- a/ac108_asound.state
+++ b/ac108_asound.state
@@ -277,7 +277,7 @@ state.seeed4micvoicec {
 	control.15 {
 		iface MIXER
 		name 'Tx1 Channels'
-		value '1 channels '
+		value '4 channels '
 		comment {
 			access 'read write'
 			type ENUMERATED
diff --git a/ac108_plugin/pcm_ac108.o b/ac108_plugin/pcm_ac108.o
deleted file mode 100644
index 26d718d..0000000
Binary files a/ac108_plugin/pcm_ac108.o and /dev/null differ