iMX53 composite video signal out not working

[AllenMekerdichi]

We are not successful in getting out Composite video
signal.

We are using following uBoot config line:

setenv tv 'setenv bootargs console=ttymxc0,115200
video=mxcdi1fb:YUV444,TV-PAL di1_primary tve'

setenv bootargs_base 'setenv bootargs console=ttymxc0,115200
gpu_nommu ${tv}'

can some please advise how we can enable Composite video output on i.mx53

[weidong_sun · Accepted solution]

Hello,Allen,

      Try to set the following parameters in u-boot ( For Linux System )

u-boot >setenv bootargs_base ‘setenv bootargs console=ttymxc0,115200’

u-boot >setenv bootargs_mmc ‘setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootfstype=ext4 rw video=mxcdi1fb:YUV444,TV-PAL di1_primary tve’

u-boot >setenv bootcmd_mmc ‘run bootargs_base bootargs_mmc;mmc dev 1 ; mmc read ${loadaddr} 0x800 0x1800;bootm’

u-boot >setenv bootcmd ‘run bootcmd_mmc’

Regards,

Weidong

[AllenMekerdichi]

Hi Weidong

"The settings given are what my customer has already used. They don't work"

They would like to know how to turn on the composite?

Best Regards,

Allen Mekerdichian

Field Applications Engineer

Avnet Electronics Marketing

Tel: (02) 9585 5515

Mobile: 0438 640 686

Fax: (02) 9585 5519

Email: Allen.Mekerdichian@avnet.com<mailto:Allen.Mekerdichian@avnet.com>

www.avnet.com<http://www.avnet.com>;

Accelerating Your Success™

[weidong_sun]

Hello,Allen,

      Could you tell me your CPU version and BSP version?

Regards.

Weidong