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Problem to interface a 12.1" display kit with the OMAP-L138

Eric LOUVEL
Prodigy 120 points

Other Parts Discussed in Thread: OMAP-L138

Hi,

I use an OMAP-L138 experimenter kit and I would to connect a 12.1” display kit (from logicPD) to interface a LCD TFT Sharp LQ121S1DG41.

I have the settings from logicPD's bootloader for this 12.1" SVGA Sharp display kit. But how to integrate them into the L138 software eXperimenter kit ?

The settings are :

Added Display
--------------
Name:           SVGA2
Number:         129
Resolution:     800 x 600
DISPC_CONTROL  (0x48050440): 0x00018128
DISPC_SIZE_LCD (0x4805047c): 0x0257031f
DISPC_GFX_SIZE (0x4805048c): 0x0257031f
DISPC_TIMING_H (0x48050464): 0x05707704
DISPC_TIMING_V (0x48050468): 0x01406303
DISPC_DIVISOR  (0x48050470): 0x00010003
DISPC_CONFIG   (0x48050444): 0x00000000
DISPC_POL_FREQ (0x4805046c): 0x00000000
CM_CLKSEL_DSS  (0x48004e40): 0x00001009
DISPC_GFX_BA0  (0x48050480): 0x80400000

Thanks for your help

Eric

  • 0
    TI__Genius 14405 points

    Eric,

    I thought the experimenter kit has a sample testcase already. I guess I am mistaken.

    Please use the lcd_graphics testcase under the evm directory as a starting point. have a look at the evmc6748_lcd_raster.c for more reference on how to change this.

    Let me know if this doesn't work for you.

    regards,

    Paul

  • 0 in reply to Paul.Yin
    Prodigy 120 points

    Hi Paul,

    thanks for your help.

    I have checked the evmc6748_lcd_raster.c but the 12" dipslay is not present (only 3.6", 4.3" and 6.4"). But I think, it's not the good solution for me to use the dsp part (because in my application the DSP is useful for signal processing with ARM communication via dsplink).

    I would like that the linux kernel drives the 12" display. I have seen into the file ~/ti-dvsdk_omapl138-evm_4_01_00_09/psp/linux-2.6-33-rc4-psp03.20.00.14/drivers/video/Kconfig the definition of SHARP_LQ121S1DG41. But how to activate it ?

    Thanks

    Best regards

    Eric

  • 0 in reply to Eric LOUVEL
    TI__Genius 14405 points

    Eric,

    I am moving this to the Linux forum for more support.

  • 0 in reply to Paul.Yin
    TI__Intellectual 880 points

    Hello Linux Forum,

                                      Please update on this Post.

    Regards

    Abhijit