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issue about imx6 IPU output

Question asked by Zongbiao Liao on Aug 27, 2015
Latest reply on Aug 31, 2015 by Joan Xie

Hello Community

 

We met a problem about imx6 IPU as bellow.

 

Data path =

imx6 BT 656 capture input, crop size = 720 x 480, capture format = 720 x 480, 60fps progressive

then,

do memory copy to output buffer,

then,

imx6 V4L2 output scaling on /dev/video17, format = 720x480, output cropsize = 1280 x 720, 60fps progressive, output dot clock frequency = 59.03MHz

 

then we found out that the display image is NG, and the right-most edge area is lost.

 

We did another test like this:

imx6 BT 656 capture input, crop size = 720 x 480, capture format = 720 x 480, 60fps progressive

then,

do memory copy to output buffer,

then,

imx6 V4L2 output scaling on /dev/video17, format = 720x480, output cropsize = 1080 x 720, 60fps progressive, output dot clock frequency = 59.03MHz

 

then we found out that the display image occupies the left part of the display area as expected(because the display area is 1280x720), and the right-most edge area is NOT lost.


Is it because of some kind of limitation in IMX6solo IPU capability? How can we overcome this effect?

 

Best Regards

ZongbiaoLiao

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