Frieder Schrempf wrote on Tue, Aug 27, 2024 at 09:00:34AM +0200:

quoted

Using my PMS calculator and Rev 2 of the Tech Ref Manual, I think I
can generate you a table entry for 51.2MHz.  I don't have the ability
to test it.  I am still working on figuring out an algorithm to
calculate the fractional divider, but 51.2MHz x 5 does not' appear to
need the fractional clock divider, so I think I can just get away with
the standard PMS calculations.

Thanks Adam for all the efforts. The initial request for the 51.2 MHz
clock was from Dominique, not me. I was just jumping onto the bandwagon
with my own use-cases.

We still have that 51.2 MHz display around, so happy to test -- might
take a little bit of time as this already has a workaround but it's
definitely something I'd like to clean up so more than happy to help.

quoted

I still think it's a good idea to fall back to the PMS calculator if
the fractional stuff isn't found.  We could then determine which clock
frequency is closer between the nearest table entry or the PMS
calculator until someone can come up with an algorithm for it.

Yes, I think that's a good idea.

Seconded; we can keep the code as fallback of the table at first and if
it works well maybe even remove the table altogether later, but just
having fallback first would be great.

-- 
Dominique