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No image when connecting the IMX6 by LVDS with Channel Link LVDS

Question asked by Andrey Lipov on Mar 5, 2015
Latest reply on Mar 18, 2015 by Andrey Lipov

Hello,

 

On this site many many many post about how to connect the imx6 by LVDS to LVDS monitor.

But no posts about how to connect the LVDS to not LVDS monitor , but with LVDS Channel Link on input DS90CR216.

 

How? how ? how? I am suffering for several months! Help me please!

 

I have board IMX6Q.

Now i truing to connect the monitor with DS90CR216. MONITOR IS NOT LVDS!

http://www.ti.com/lit/ds/symlink/ds90cr215.pdf

From DS90CR216 the signal going to TTL of monitor.

 

 

1. i set drivers/video/mxc/ldb.c parametrs of my monitor

 

2. Monitor is 18 bit and 3 pairs channel + 1 clk + GND

 

3. I connect it like on scheme, but what i will do with VDD power 3.3 on my IMX6 ? i need to disable somthing?

Becouse on the DS90CR216 Channel Link there is no need the VDD, there is onli input 3 pairs and 1 clock + GND.

 

4. i recompile the new kernel with my parametrs and send it to my board.

 

5. Then i starting my board with new parametrs

 

setenv bootargs console=ttySAC0,115200 init=/init video=mxcfb0:dev=ldb,LDB-1080P60,if=RGB666,bpp=32 ldb=spl0 video=mxcfb1:off video=mxcfb2:off fbmem=48M vmalloc=400M androidboot.console=ttySAC0 androidboot.hardware=freescale

 

saveenv

 

Saving Environment to MMC...

Writing to MMC(3)... done

 

booti mmc3

 

But again, nothing

 

I trued with different parametrs.

 

setenv bootargs console=ttySAC0,115200 init=/init video=mxcfb0:dev=ldb,LDB-XGA,if=RGB666,bpp=32 ldb=sin0 video=mxcfb1:off video=mxcfb2:off fbmem=48M vmalloc=400M androidboot.console=ttySAC0 androidboot.hardware=freescale

 

 

setenv bootargs console=ttySAC0,115200 init=/init video=mxcfb0:dev=ldb,LDB-XGA,if=RGB666,bpp=32 ldb=sep0 video=mxcfb1:off video=mxcfb2:off fbmem=48M vmalloc=400M androidboot.console=ttySAC0 androidboot.hardware=freescale

 

But nothing, no blinking, no flickering.

 

Prompt in what may still be problem? any ideas what to check?

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