From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] ns16550: allow UART address to be set dynamically
Date: Mon, 17 Dec 2012 23:37:45 +0100 [thread overview]
Message-ID: <20121217223745.0476C202B05@gemini.denx.de> (raw)
In-Reply-To: <50CF9BAA.3050504@wwwdotorg.org>
Dear Stephen Warren,
In message <50CF9BAA.3050504@wwwdotorg.org> you wrote:
>
> There are many ways besides device tree to enumerate hardware. For
> example, consider PCI or USB (albeit USB isn't memory mapped). I don't
Yes, there are. But your console port cannot be compred against
dynamically populated and scannable bus interfaces like USB or PCI,
and I think you are aware of that.
> think we should tie any new U-Boot dynamic device registration API to
> device tree, since that would seem to prevent (or imply against) usage
> of that API with PCI for example.
Not any dynamic device registration. But here, it actually AIN'T
dynamic - it is fully static, just board dependent.
> Perhaps this is just bike-shedding over naming?
No.
> So that all of the following cases could call that:
>
> * DT parsing.
> * PCI device enumeration.
> * ODMDATA parsing.
NAK. This is totally wrong. ODMDATA is just a different
representation of information that could as well be encoded in a DT.
PCI or USB bus scanning gives information which cannot be encoded in a
DT passed to U-Boot (at least not unless you dynamically generate that
DT using some other softeware performing such a bus scan).
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
If you hear an onion ring, answer it.
next prev parent reply other threads:[~2012-12-17 22:37 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-12 23:23 [U-Boot] [PATCH] ns16550: allow UART address to be set dynamically Stephen Warren
2012-12-12 23:38 ` Simon Glass
2012-12-12 23:52 ` Stephen Warren
2012-12-13 0:38 ` Simon Glass
2012-12-13 10:29 ` Wolfgang Denk
2012-12-13 18:17 ` Stephen Warren
2012-12-13 20:36 ` Wolfgang Denk
2012-12-13 20:45 ` Stephen Warren
2012-12-13 20:53 ` Tom Rini
2012-12-13 21:07 ` Stephen Warren
2012-12-13 21:51 ` Simon Glass
2012-12-14 20:40 ` Tom Rini
2012-12-14 21:14 ` Simon Glass
2012-12-14 22:03 ` Stephen Warren
2012-12-14 22:22 ` Simon Glass
2012-12-14 22:45 ` Stephen Warren
2012-12-17 21:09 ` Tom Rini
2012-12-17 22:24 ` Stephen Warren
2012-12-17 22:37 ` Wolfgang Denk [this message]
2012-12-17 22:58 ` Stephen Warren
2012-12-18 6:39 ` Wolfgang Denk
2012-12-18 16:37 ` Stephen Warren
2012-12-18 19:15 ` Simon Glass
2012-12-17 21:09 ` Tom Rini
2012-12-14 22:35 ` Wolfgang Denk
2012-12-14 21:52 ` Stephen Warren
2012-12-14 22:31 ` Wolfgang Denk
2012-12-14 22:26 ` Wolfgang Denk
2012-12-14 23:16 ` Graeme Russ
2012-12-15 0:32 ` Wolfgang Denk
2012-12-15 1:32 ` Graeme Russ
2012-12-15 7:30 ` Wolfgang Denk
2012-12-15 9:53 ` Graeme Russ
2012-12-17 21:04 ` Tom Rini
2012-12-13 23:11 ` Wolfgang Denk
2012-12-13 23:26 ` Stephen Warren
2012-12-13 10:27 ` Wolfgang Denk
2012-12-13 13:11 ` Tom Rini
2012-12-13 14:22 ` Wolfgang Denk
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