diff --git a/imx678mipi_Sensor.c b/imx678mipi_Sensor.c
index 42998e3..33a3452 100644
--- a/imx678mipi_Sensor.c
+++ b/imx678mipi_Sensor.c
@@ -59,7 +59,7 @@ static struct imgsensor_info_struct imgsensor_info = {
     .grabwindow_width = 3840,        //record different mode's width of grabwindow
     .grabwindow_height = 2160,        //record different mode's height of grabwindow
 		.mipi_data_lp2hs_settle_dc = 85,
-		.max_framerate = 10,	
+		.max_framerate = 300,	
 	},
 	.cap = {
 		.pclk = 74250000,				
@@ -70,7 +70,7 @@ static struct imgsensor_info_struct imgsensor_info = {
     .grabwindow_width = 3840,
     .grabwindow_height = 2160,
 		.mipi_data_lp2hs_settle_dc = 85,
-		.max_framerate = 10,	
+		.max_framerate = 300,	
 	},
 	.cap1 = {
 		.pclk = 74250000,				
@@ -81,7 +81,7 @@ static struct imgsensor_info_struct imgsensor_info = {
     .grabwindow_width = 3840,
     .grabwindow_height = 2160,
 		.mipi_data_lp2hs_settle_dc = 85,
-		.max_framerate = 10,	
+		.max_framerate = 300,	
 	},
 	.normal_video = {
 		.pclk = 74250000,				
@@ -120,7 +120,7 @@ static struct imgsensor_info_struct imgsensor_info = {
 	},
 	.margin = 3,
 	.min_shutter = 3,
-	.max_frame_length = 0xffff,
+	.max_frame_length = 0xfffff,
 	.ae_shut_delay_frame = 0,
 	.ae_sensor_gain_delay_frame = 0,
 	.ae_ispGain_delay_frame = 2,
@@ -311,7 +311,7 @@ static void set_dummy(void)
 	write_cmos_sensor(0x3001, 0x01);
   write_cmos_sensor(0x3028, (imgsensor.frame_length&0x0000ff));
 	write_cmos_sensor(0x3029, (imgsensor.frame_length&0x00ff00)>>8);
-	write_cmos_sensor(0x302a, (imgsensor.frame_length&0x0f0000)>>16);
+	write_cmos_sensor(0x302a, (imgsensor.frame_length&0xff0000)>>16);
 	write_cmos_sensor(0x3001, 0x00);
 }
 #endif