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2007-11-13Review PLL spreadsheet and update register ranges.Keith Packard
The PLL spreadsheet makes the precise register ranges allowed for each mode quite clear, and shows a few inaccuracies in the b-spec. In particular, the N register value may range from 1 to 6 instead of 3 to 8. This should close the gap we've seen in the reachable frequencies.
2007-10-19In the clock graph, draw the VCO as erasures in the lines representing clocks.Eric Anholt
This shows one of the reasons for the gaps: with the other settings, the VCO is too low inside the gap. However, it also points out another issue: we aren't using the high end of the VCO range due to some other limits being hit.
2007-10-18Add some nickle scripts for looking at PLL issues.Eric Anholt
While here, move similar nickle scripts under src/scripts/