PXA270 LCD driver

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Hi,

Reference to mainstone III, I'm using the default PXA270 LCD driver.
As we are using a 640x480 panel, with very similar timing as the default Toshiba LTM04C380K, I changed the platform.reg to use the LTM04C380K setting.

The system managed to boot to WinCE, but with a flickering LCD display.
When I measured the pixel clock, it is running at 13Mhz, and not at the expected freq of 25.18Mhz.
The system 13Mhz clock is running correctly.

I went through the LCCRx registers and the settings looks fine to me, as the panel we have has almost the same spec.
Does anyone has successfully used the LTM04C380K settings on other LCD panel?

Any advice on the unexpected pixel clock?


Thanks and Regards
.

Relevant Pages

  • Re: [PATCH] PXA255 LCD Driver
    ... > if I got all the needed data from the EDID about a display panel. ... If I explain what the situation is with the PXA LCD controller perhaps ... The settings which are of interest on a PXA255 are that aren't present ...
    (Linux-Kernel)
  • RE: display driver using BPP_18
    ... e.g Check the voltage that supplies to the panel. ... settings in LCD controller registers ... Please must confirm that the pixel clockfreq. ... controller as pixel clock ...
    (microsoft.public.windowsce.embedded)
  • Re: Any idea of minimum safe pixel clock for an 800x600 TFT LCD?
    ... >> My concern is that if I use the M16C, and slow down the pixel clock to ... >applied a DC voltage to the LCD panel. ... where a small PIC processor scanned an LCD display. ...
    (comp.arch.embedded)
  • Re: [PATCH] PXA255 LCD Driver
    ... > The settings which are of interest on a PXA255 are that aren't present ... > All of these differ from panel to panel, pretty much at the whim of the ... > My thinking prior to this discussion was to go for a database which maps ... > LCD part # to all the settings above, where each LCD is selectable from ...
    (Linux-Kernel)
  • Re: Any idea of minimum safe pixel clock for an 800x600 TFT LCD?
    ... the panel may be damaged". ... Usually there is minimum refresh rate or pixel clock in the datasheet ... applied a DC voltage to the LCD panel. ... where a small PIC processor scanned an LCD display. ...
    (comp.arch.embedded)