howto IMX6Q GS2972 HD-SDI display driver

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howto IMX6Q GS2972 HD-SDI display driver

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hongchao0680
Contributor III

I have a custom i.MX6Q board running  fsl4.1.15_2;   I need to send 1080i video through the parallel display port to a Semtech  GS2972  20-bit HD-SDI serializer.  Please anyone can tell me  how to fix the display and uboot  to support 

 1080I60  1080P60  720P@50 display ?

thanks a lot .

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9 Replies

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hongchao0680
Contributor III

canyou give me your git log in kernel?

I see this  patch,is it useful?

https://community.nxp.com/docs/DOC-94019 

我无法打上这个补丁,估计补丁有前提补丁。

谁能帮助我吗?

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi hongchao

for using CEA 861 timing mode (TIM_861 = HIGH) and SDI serializer one can check

Patch for iMX6 BSP to support interlaced display on HDMI and LCD interface 
https://community.nxp.com/thread/331272?commentID=442000#comment 

Best regards
igor
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hongchao0680
Contributor III

THANS A LOG FOR work;but not right:

next is display with bootcmd: video=mxcfb0:dev=lcd,LCD-1080I50,if=RGB565,bpp=32 

RGB565.jpg

next is display with bootcmd: video=mxcfb0:dev=lcd,LCD-1080I50,if=RGB24,bpp=32 

RGB24.jpg

where is the problem? how to fix this?

came on help me .

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qiang_li-mpu_se
NXP Employee
NXP Employee

Please try "if=UYVY16", I think your GS2972 need YUV input data.

For 16 bits display interface, the hardware link should be followed:

IPUx_DISPx_DAT15 ~ IPUx_DISPx_DAT08 connect to GS2972 DIN[19~12].

IPUx_DISPx_DAT07 ~ IPUx_DISPx_DAT00 connect to GS2972 DIN[9~2].

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hongchao0680
Contributor III

netxt is  our hardware 

DS25-CPU-interface.pngI use console=ttymxc0,115200 androidboot.console=ttymxc0 vmalloc=400M init=/init video=mxcfb0:dev=lcd,LCD-1080I50,if=UYVY16,bpp=32 video=mxcfb1:off, video=mxcfb2:off fbmem=28M androidboot.hardware=freescale;

the display not right; next is the picture :

16.jpg

it looks like better than before;but not all right。why?

DO i need the  add teh GS2972.c  driver to kerkel?

thans a lot;who can save me,i can buy this.

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qiang_li-mpu_se
NXP Employee
NXP Employee

I think you need check the GS2972 setting, from iMX6 side, for this 16 bits interface, U/V data is output from DISP0_D15 ~ DISP0_D8, and Y data is output from DISP0_D7 ~ DISP0_D0.

Clock polarity should also be checked.

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wangfei
Contributor I

Hi, liqiang,

    I have a similar question. Abnormal display of 576-PAL.  ( BT656 720x576 8bit display error )

I need your help, thanks!

Best Regards!

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hongchao0680
Contributor III

i use i.MX6Q board running android 4.4.1 patch   fsl4.1.15_2;  kernel is L3.0.35_4.1.0; you can add my qq: 403722148

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hongchao0680
Contributor III

Thank your answer.

I patch L3.0.35_4.1.0_GA_HDMI_Interlaced_Mode_Patch_2016-05-20.zip  this file ;but not work

the boot dead; and no display.

can  you help me ? i need you very much.

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