刚开始接触3520D开发板，运行sample_vio出现蓝屏

开发板是3520DV200，AD芯片是6114A，SDK版本是1.0.4，运行sample_vio之后VGA和HDMI输出都是蓝屏，而且选了1之后并没有出现那个4分割的田字格，接了720P的AHD摄像头之后也没出现摄像头画面，可以确认摄像头是好的。以下是加载驱动和运行sample_vio的终端信息：
[code]# ./load3520D -i
SDK_TYPE type is 8d1
Hisilicon Media Memory Zone Manager
hi3520D_base: module license 'Proprietary' taints kernel.
Disabling lock debugging due to kernel taint
Hisilicon UMAP device driver interface: v3.00
load sys.ko ...OK!
Load tde.ko ...OK!
load venc.ko ...OK!
load group.ko ...OK!
load chnl.ko ...OK!
load h264e.ko ...OK!
load rc.ko ...OK!
load jpege.ko ...OK!
load viu.ko ...OK!
load vou.ko ....OK!
load vpss.ko ....OK!
load vda.ko ....OK!
load region.ko ....OK!
load vdec.ko ....OK
load vhd firmware.ko OK
load hdmi.ko ....OK!
Load jpeg6b.ko success.         (SDK_VERSION:[jpeg6bv1.0] Build Time:[Sep 29 2014, 18:04:52])
cx26828 driver version 1.0.104 loaded
cx26828 driver init successful !
nvp6114 Device ID Error... ff
nvp6114 Device ID Error... ff
nvp6114 Device ID Error... ff
nvp6114 Device ID Error... ff
NVP6114 Count = 0

nvp6114 software reset!!!
NVP6114 720P@25fps MODE SETTING!!!
ch1/2 mode[720P],ch3/4 mode[720P]
NVP6114_OUT_ALL_720P

# cd ..
# ls
ko             mount.sh       sample_venc
mm.bmp         sample_region  sample_vio
# ./sample_vio 0
[SAMPLE_COMM_SYS_CalcPicVbBlkSize]-167: w:960, u32AlignWidth:64
start vo SD1.
u32Width:720, u32Square:2
start vo HD0.
u32Width:1024, u32Square:2
HDMI start success.
start vo SD0: wbc from hd0
u32Width:720, u32Square:1
please choose preview mode, press 'q' to exit this sample.
        0) 1 preview
        1) 4 preview
        2) 8 preview
        q) quit
1
[SAMPLE_VIO_4_D1]-994: vo(0) switch to 4 mode
u32Width:1024, u32Square:2
please choose preview mode, press 'q' to exit this sample.
        0) 1 preview
        1) 4 preview
        2) 8 preview
        q) quit

[/code]

运行 ./sample_vio 7现象也是一样的