[U-Boot] [PATCH] ns16550: allow UART address to be set dynamically

[Wolfgang Denk <wd@denx.de>]

Dear Stephen Warren,

In message <50CBA217.3070202@wwwdotorg.org> you wrote:
>
> Many (most, I assume) U-Boot builds don't use device tree at all
> (yet?). I'm not sure we should tie any new mechanism for low-level
> boot information into device tree, since that severely limits where it
> can be used.

We're talking about ways to pass hardware cosnfiguration information
to the boot loader.  From the software engineering point of view,
there should be just one implementation for this feature, which is
then used everywhere.  The de-factor satndard for this functionaity is
the device tree.  Which means that any other approaches either need
very strong reasons to exist, or should be adapted.

> I'm not sure the information is generic enough to even represent in
> device tree, or that it even makes sense to do so.

The DT is as good a place for such information as any other.

> A certain amount of that information duplicates what's in the Tegra
> BCT, which is essentially part of the HW itself, since it's handled by

There is more SoCs around than just Tegra, and a solution that fits
all is definitely better than everybody implementing hos own private
thingy.

Best regards,

Wolfgang Denk

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