Display not working - boot loop

      Display not working - boot loop

      Hi All,

      I have a Picocoma5 developers kit which works fine. For our project I need to attach a different screen, a Winstar one.

      I've updated the "mach-picocoma5.c" file to use the 480x272 and left the settings for that config the same in the "mvf_dcu.c" file. After building and installing the kernel, the board is stuck in a boot loop, the output below is from the serial connection.

      Even though I am not certain about the settings in mvf_dcu.c (specs from winstar are rather minimal :(), I did not expect the board to get into a bootloop.. If I attach the bigger screen from the devkit, it does boot (the display is messed up due to the wrong resolution, but that was to be expected).

      Am I overlooking something that is needed to get a different display working?


      Source Code

      1. ....
      2. ---- No update script found ----
      3. Loading from nand0, offset 0x200000
      4. Image Name: Linux-3.0.15-F+S
      5. Image Type: ARM Linux Kernel Image (uncompressed)
      6. Data Size: 2624188 Bytes = 2.5 MiB
      7. Load Address: 80008000
      8. Entry Point: 80008000
      9. ## Booting kernel from Legacy Image at 80800000 ...
      10. Image Name: Linux-3.0.15-F+S
      11. Image Type: ARM Linux Kernel Image (uncompressed)
      12. Data Size: 2624188 Bytes = 2.5 MiB
      13. Load Address: 80008000
      14. Entry Point: 80008000
      15. Verifying Checksum ... OK
      16. ## Patching ttymxc0 at Offset 0x3526 to ttymxc1
      17. Loading Kernel Image ... OK
      18. Starting kernel ...
      19. Uncompressing Linux... done, booting the kernel.
      20. U-Boot 2012.07 (Aug 22 2014 - 09:42:38) for F&S