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ADV7611 Linux Driver and Support

Question asked by ranaya on Jan 28, 2017
Latest reply on Feb 3, 2017 by GuenterL

Hi All,

I am trying to interface ADV7611 hdmi chip with IMX6 processor. This is the driver I am using, although it's for 7610, I guess the register map look same, hence it should work !

linux-fslc/adv7610.c at 3.14-1.0.x-mx6-tinyrex · voipac/linux-fslc · GitHub 

Here I commented 'USE_16BIT' as we intend to use 8-bit mode with the imx6 development board we have. 

 

When the interface is made through 8-bit BT656 mode, I am receiving following error from the kernel ->

- ipu_csi_window_size_crop: Error left=0 top=59565955
- imx-ipuv3 2400000.ipu: Unsupported CCIR656 interlaced video mode

 

I suspect this must be caused by the driver data pattern, so is this the right driver to use ? Moreover can 8-bit BT656 accept HDMI 720p and 1080p video inputs ? Or only 12 and 16 bit modes can support this ???

 

I have also a question about RXA_5V pin of the chip. Should this be connected even If I use active hdmi devices ?

Here I've attached the schematic I use for our custom made board 

 

Thanks in Advance

 Anuradha

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