Create Account
Search
You are here: TDG Forum  >>  Texas Instruments SOMs and Development Kits  >>  OMAP35x, DM3730, AM3703 SOM-LV Development Kit  >>   480x640 LCD interfacing.

Technical Discussion Group Forum

This forum is provided for user discussion. While Beacon EmbeddedWorks support staff and engineers participate, Beacon EmbeddedWorks does not guarantee the accuracy of all information within in the Technical Discussion Group (TDG).

The "Articles" forums provide brief Articles written by Beacon EmbeddedWorks engineers that address the most frequently asked technical questions.

To receive email notifications when updates are posted for a Beacon EmbeddedWorks product download, please subscribe to the TDG Forum of interest.

TDG Forum

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 15 Feb 2012 11:03 PM by  pcdash@tatapowersed.com
480x640 LCD interfacing.
 4 Replies
Sort:
You are not authorized to post a reply.
Author Messages
pcdash@tatapowersed.com
New Member
New Member
Posts:


--
30 Jan 2012 09:31 PM
    Hi,
    I am using OMAP35x SOM LV. I am trying to use a custom LCD panel with 480x640 resolution.
    I am able to display a bitmap during LOLO. But while booting into Linux, only 480x270 resolution is coming.
    I have tried changing different display modes with 640x480 and omapfb.rotation etc, but unable to display.

    Any sugestion would help.

    Thanks
    Prakash
    richard.laborde@logicpd.com
    Basic Member
    Basic Member
    Posts:247


    --
    31 Jan 2012 08:19 AM
    Prakash,

    Did you erase the Uboot display variables before you tried to boot Linux?
    If you ever booted with the kit display, the variables for that display are stored in flash. You will need to erase them to use a different display.
    Thanks

    Richard
    pcdash@tatapowersed.com
    New Member
    New Member
    Posts:


    --
    31 Jan 2012 09:33 PM
    Hi Richard,

    yes i have changed display variable in uboot.
    like:
    setenv display 5 ( for 640x480)
    and saveenv
    and i think there is no other settings.
    but after booting into linux blank screen
    richard.laborde@logicpd.com
    Basic Member
    Basic Member
    Posts:247


    --
    01 Feb 2012 08:38 AM
    Please see the note in Section 2.13.6 #3 of the Linux BSP User Guide for erasing previous U-boot settings.
    Erase U-Boot's environment:

    losh> erase /dev/nand0 B2046 B2

    Thanks
    pcdash@tatapowersed.com
    New Member
    New Member
    Posts:


    --
    15 Feb 2012 11:03 PM
    Hi,

    thanks. i solved this problem by changing custom lcd timings.




    Thanks
    prakash
    You are not authorized to post a reply.

    Forums Texas Instruments SOMs and Development Kits OMAP35x, DM3730, AM3703 SOM-LV Development Kit