diff --git a/oem/oem_uvcc/RkLunch.sh b/oem/oem_uvcc/RkLunch.sh
index 473c3a1..83db50b 100755
--- a/oem/oem_uvcc/RkLunch.sh
+++ b/oem/oem_uvcc/RkLunch.sh
@@ -48,8 +48,18 @@ echo "camera_max_height= ${camera_max_height}"
 export CAMERA_MAX_WIDTH=${camera_max_width}
 export CAMERA_MAX_HEIGHT=${camera_max_height}
 
+#line config
+isp_line=$((${camera_max_height} / 2))
+ispp_line=0  #$((${camera_max_height} / 4 * 3 ))    #no fec
+cif_line=$((${camera_max_height} / 4 * 3 ))
+echo "isp_line= $isp_line , ispp_line= $isp_line, cif_line= $cif_line"
+echo $isp_line > /sys/module/video_rkisp/parameters/wait_line
+echo $ispp_line > /sys/module/video_rkispp/parameters/wait_line
+echo $cif_line > /sys/devices/platform/rkcif_mipi_lvds/line_int_num
+
 #rockit log level ctrl: 1:fatal error; 2: error; 3: warning; 4:infomational; 5:debug level; 6:verbose
 export rt_log_level=3
+#export uvc_app_log_level=3
 
 #export ENABLE_EPTZ=1
 
diff --git a/rv1126_rv1109/BoardConfig-uvcc-spi-nand.mk b/rv1126_rv1109/BoardConfig-uvcc-spi-nand.mk
index e4a1ab0..a18cfa0 100644
--- a/rv1126_rv1109/BoardConfig-uvcc-spi-nand.mk
+++ b/rv1126_rv1109/BoardConfig-uvcc-spi-nand.mk
@@ -18,6 +18,7 @@ export RK_KERNEL_DEFCONFIG=rv1126_defconfig
 export RK_KERNEL_DEFCONFIG_FRAGMENT="rv1126-uvc-spi-nand.config"
 # Kernel dts
 export RK_KERNEL_DTS=rv1126-ai-cam-ddr3-v1-spi-nand
+#export RK_KERNEL_DTS=rv1126-ai-cam-audio-ddr3-v1-spi-nand
 # boot image type
 export RK_BOOT_IMG=zboot.img
 # kernel image path