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: VSPW 1 VBPD 9 VFPD 2 HSPW 5 HBPD 19 HFPD 2 HCLK 133 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/ _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/cgi-bin/mailman/listinfo/community
