problem with CVBS display

Please refer to FBDev user guide, it explains how to display over SD VENC/Composite output.

Rgds,

Brijesh

Thanks for your reply.

I modified my configure according to http://processors.wiki.ti.com/index.php/TI81XX_PSP_VPSS_Video_Driver_User_Guide#FBDEV_Driver,  but that didn't work .

Configure the SD VENC(Composite output)

#
# ls -1 /sys/devices/platform/vpss/display2/
clksrc
enabled
mode
name
order
output
timings
#

# echo 0/1 > /sys/devices/platform/vpss/display2/enabled

# echo ntsc/pal > /sys/devices/platform/vpss/display2/mode

echo A,B/C/D/E > /sys/devices/platform/vpss/display2/order
A: enable(1)/disable(0) global reorder. if 0 is set, then only B value is required, C,D and E should not be used.
B: 0-3: display order of video(0:lowest, 3:highest)
C: 0-3: display order of graphics0
D: 0-3: display order of graphics1
E: 0-3: display order of graphics2

echo composite/svideo > /sys/devices/platform/vpss/display2/output

What else can I do ?

Thanks.

Follow below steps,

Disable VENC, check if it is really disabled

changed output to composite

Change mode to either ntsc/pal

enable/start the venc,

These steps should work.

Rgds,

Brijesh

Thanks.

I failed again when I did follow your advice.

fbdev config:

cd /sys/devices/platform/vpss/display2/
echo 0 > enabled
echo composite > output
echo ntsc > mode
echo 1 > enabled
cd -

displayLink config:

gVdisModuleContext.displayId[0] = SYSTEM_LINK_ID_DISPLAY_2;

192     MULTICH_INIT_STRUCT(DisplayLink_CreateParams,displayPrm[0]);
193     displayPrm[0].inQueParams[0].prevLinkId    = gVcapModuleContext.sclrId[1] ;
194     displayPrm[0].inQueParams[0].prevLinkQueId = 0;
195     displayPrm[0].displayRes                   = VSYS_STD_NTSC;
196
197
198     System_linkCreate (gVcapModuleContext.captureId, &capturePrm, sizeof(capturePrm));
199     System_linkCreate(gVcapModuleContext.sclrId[0], &mpSclrPrm1, sizeof(mpSclrPrm1));
200     System_linkCreate(gVcapModuleContext.sclrId[1], &sclrPrm1, sizeof(sclrPrm1));
201
202     System_linkCreate(gVdisModuleContext.displayId[0], &displayPrm[0], sizeof(displayPrm[0]));

linkChains:

cature(2448*2048) -> mpscalar (1080p) -> scalar(ntsc) -> display

is there any error ? 3Q

Thanks for reply!

my chain can work, but another quesion.

Frame is departed to  two parts, as attachment.