diff --git a/drivers/amlogic/cec/hdmi_ao_cec.c b/drivers/amlogic/cec/hdmi_ao_cec.c
index 0d45d2239a20..c55a794940ea 100644
--- a/drivers/amlogic/cec/hdmi_ao_cec.c
+++ b/drivers/amlogic/cec/hdmi_ao_cec.c
@@ -753,7 +753,7 @@ static void ao_cecb_init(void)
 			reg = 0;
 			reg |= (0 << 6);/*curb_err_init*/
 			reg |= (0 << 5);/*en_chk_sbitlow*/
-			reg |= (0x15 << 0);/*rise_del_max*/
+			reg |= (CEC_B_ARB_TIME << 0);/*rise_del_max*/
 			hdmirx_cec_write(DWC_CEC_CTRL2, reg);
 		}
 
@@ -1210,7 +1210,7 @@ void cec_hw_reset(unsigned int cec_sel)
 			reg = 0;
 			reg |= (0 << 6);/*curb_err_init*/
 			reg |= (0 << 5);/*en_chk_sbitlow*/
-			reg |= (0x15 << 0);/*rise_del_max*/
+			reg |= (CEC_B_ARB_TIME << 0);/*rise_del_max*/
 			hdmirx_cec_write(DWC_CEC_CTRL2, reg);
 		}
 	} else {
diff --git a/drivers/amlogic/cec/hdmi_ao_cec.h b/drivers/amlogic/cec/hdmi_ao_cec.h
index def2126892c8..df8e098afd7a 100644
--- a/drivers/amlogic/cec/hdmi_ao_cec.h
+++ b/drivers/amlogic/cec/hdmi_ao_cec.h
@@ -18,7 +18,7 @@
 #ifndef __AO_CEC_H__
 #define __AO_CEC_H__
 
-#define CEC_DRIVER_VERSION	"2019/11/12: store msg during bootup from st\n"
+#define CEC_DRIVER_VERSION     "2019/12/01:finetune ARB time, cause cts 9.6.1\n"
 
 #define CEC_FRAME_DELAY		msecs_to_jiffies(400)
 #define CEC_DEV_NAME		"cec"
@@ -83,6 +83,8 @@ enum cecbver {
 #define ENABLE_ONE_CEC	1
 #define ENABLE_TWO_CEC	2
 
+#define CEC_B_ARB_TIME 8
+
 #define CEC_MSG_BUFF_MAX	30
 
 /*