On Wednesday 06 March 2013, Bastian Hecht wrote:

2013/3/6 Paul Mundt [off-list ref]:

quoted

No, we still need to figure out how to generate that baud rate, whether
it needs an internal or external clock for driving the rate, etc. The
frequency in and of itself doesn't provide this information, and various
parts use different algorithms for factoring the baud rate generator,
even varying across otherwise identical ports. It's unfortunately not
possible to infer anything about the SCBRR algorithm from port type or
specified baud rate.

The algorithm IDs here are wholly arbitrary anyways, but are the
variations I came up with from roughly 60-70 different CPUs.

Ok, I see.

So if we stick with the notion of the algrithm ID everything is settled now.

I will prepare a v6 that I will post as the whole patchset and an
additional incremental patch 1/3 from v3 to v6 for Paul's repo. Then
we can see if the SCBRR thing needs further discussion and if the rest
of the patchset is final.

I can't think of anything better either, so let's stick to putting the
algorithm ID into the DT binding.

	Arnd