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如何调整Beagle board XM 的LCD分辨率

Eric yao
Prodigy 10 points

hi，

 我们用的是800*480 7"的lcd屏，RGB接口，我用的开发板是beagleboard XM Rev,C ,系统用的是从TI网站上下载的linux版本：beagleboard-sdk-src-05.02.00.0，linux的版本号是2.6.39，用默认代码编译后下载到班子里，可以显示，但是分辨率是1024*768的，我想改成800*480的如何修改？

 我注意到kernel用的lcd驱动是panel-general-dpi.c，我修改了这个驱动文件的x-res,y-res,但是，不起作用，请问该如何修改？

谢谢

  • 0
    Intellectual 260 points

    这个请您参见linux中LCD驱动的编写。

  • 0 回复 Heng Feng
    TI__Expert 8140 points

    "DSS2" display driver for >= 2.6.29

    Tomi has updated the display driver and has a clone of his tree on Gitorious. The kernel sources contain the DSS2 documentation. The syntax has been updated a bit, so it is worth re-examining. This updated driver seems to being used in Angstrom builds of the BeagleBoard kernel starting with 2.6.29.

    Example:

       omapfb.mode=dvi:1024x768MR-16@60

       omapfb.mode=dvi:1280x720MR-16@60 (for 720p HDTV with 1:1 pixel mapping)

       omapfb.mode=dvi:1280x1024MR-16@60 (tested on revB7, actual output is 57MHZ and may not work on some devices)

       omapfb.mode=dvi:1360x768MR-16@60 (works nice on 720p HDMI TV which crops edges due to overscan)

    Note: the M indicates the kernel will calculate a VESA mode on-the-fly instead of using modedb lookup. The R indicates reduced blanking which is for LCD monitors. Most HDTV will probably only operate with a VESA mode.

    elinux.org/BeagleBoardFAQ

    this link is you need for Beagleboard

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