VGA output and cpufreq

Matan Ziv-Av
Sat Jun 26 17:43:03 CEST 2004


I am developing a framebuffer driver for the sa1101 (VGA output of the 
J820). A patch (relative to CVS kernel downloaded from sourceforge 
about a week ago) which includes this driver is at:

Current issues:
Resolution is set at compile time.
No support for unified frame buffer.
FB is write only, so programs that attempt to read it (like linux cursor 
code) have wierd results.

I wish to add support for other frequencies, so for calculating the DRAM 
timings for those other frequencies I need to know which DRAM chips are 
used (for the main ram). If someone who openned their Jornada can tell 
me which chips are used, I'll search the relevant datasheet, and 
calculate the timings.

About the USB - I solved the interrupts problem, but there is probably 
aserious issue with DMA.

Matan Ziv-Av.               

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