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BT656 output on ADV7391 using imx6 quad

Question asked by Meton Ruang on Feb 13, 2014
Latest reply on Feb 12, 2016 by Ivan Ljubicic

Hi,

I am trying to use the adv7391 encoder to output using cvbs with am imx6 quad board. I am using the patches from https://community.freescale.com/docs/DOC-94019 (specifically the patch L3.0.35_4.1.0_GA_bt656_output_patch_2013-09-30.zip which seems to be the latest). The encoder is setup on IPU number 2 and Display 0.

The scenario is with ldb and cvbs output on a monitor connected to the encoder.

When android boots up, I get the normal image on the ldb and on the cvbs output I get the same image but with flickering scrambled image, greenish. So really bad coloring etc.

When I try to use mxc_v4l2_output, I get the following warnings:

 

imx-ipuv3 imx-ipuv3.1: IPU Warning - IPU_INT_STAT_5 = 0x00800000

imx-ipuv3 imx-ipuv3.1: IPU Warning - IPU_INT_STAT_10 = 0x00080000

 

The uboot related line is:

 

video=mxcfb0:dev=adv739x,BT656-NTSC,if=BT656,fbpix=UYVY16 video=mxcfb1:dev=ldb,800x480M@60,if=RGB24,bpp=32 video=mxcfb2:off

 

Any suggestion is welcome.

Thanks!

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