Drawing raw pixels to screen..
jollen at jollen.org
Sat Nov 25 16:52:04 CET 2006
On Thu, 23 Nov 2006 12:45:26 -0500, Richard Franks wrote
> Fundamental to this though, is how quickly the Neo1973 can update its
> display - is it possible to get some FPS figures for just a simple
> for XY loop?
For FPS calucation, pluse and porch should first be determined. The typical
values for Samsung 2.83" TFT-LCD goes:
And HCLK is 133 for s3c2410 with 266 MHz operation mode. Then, 240*320 is 38.8
MHZ in frame rate if 'MVAL' field of LCDCON4 register of s3c2410 is set to 18.
It's the MVAL that determines the resulting frame rate, for 480*640 with the
same pulse and porch values:
*IF* frame frame is suggested to be ABOUT 38.8MHz, then the MVAL should be set
to 4 therefore IN THIS CASE.
Tuning and patchof Linux fb machine-dependent driver should be considered.
Jollen Chen [Jollen at jollen dot org]
Website [zh-TW]: http://www.jollen.org
Blog [zh-TW]: http://www.jollen.org/blog/
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