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How to rotation display on 3530?

jason58860
Prodigy 200 points
Other Parts Discussed in Thread: OMAP3530, DM3730

Hi

How to rotation display (90 270 180) on 3530?

I should set what register in 3530?

 

Thank you

 

  • 0
    TI__Guru*** 125430 points

    Please see the documentation for virtual rotated frame-buffer (VRFB) in Chapter 11.2 "SDRAM Control (SDRC) Subsystem" of the OMAP3530 TRM.

  • 0 in reply to Brad Griffis
    Prodigy 200 points

    I always thought that rotate in Chapter 15. Thank you.

    Now , I reference http://processors.wiki.ti.com/index.php/UserGuideDisplayDrivers_PSP_03.00.00.05#Rotation web site to type command (echo 1 > /sys/class/graphics/fb0/rotate) to rotation.But it is not work.

    Display error message  "detected fb_set_par error, error code: -22" .  What is you think?

    My kernel version is 2.6.32.

    BR, 

     

  • 0 in reply to jason58860
    Intellectual 400 points

    HI All

    I am working on DM3730 and Linux-2.6.32 kernel version.

    I am also facing the same issue when I am trying to rotate the fb0 using the SYSFS controls provided.

    --------------------------------------------------------------------------

    root@dm37x-evm:~# echo 1 > /sys/class/graphics/fb0/rotate
    detected fb_set_par error, error code: -22
    root@dm37x-evm:~# echo 0 > /sys/class/graphics/fb0/rotate

    0
    root@dm37x-evm:~# echo 2 > /sys/class/graphics/fb0/rotate
    root@dm37x-evm:~# omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

    root@dm37x-evm:~#

    --------------------------------------------------------------------------------------------------


    HAS ANY ONE SOLVED THIS ISSUE, CAN YOU PLEASE HELP ME OUT HERE.


    Thanks & Regards

    Anil