linux-kernel - Re: [PATCH 2/3] [ARM] msm: make debugging UART (for DEBUG

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Message-ID: <20090615183433.GB10490@elf.ucw.cz>
Date:	Mon, 15 Jun 2009 20:34:33 +0200
From:	Pavel Machek <pavel@....cz>
To:	Brian Swetland <swetland@...gle.com>
Cc:	linux-arm-kernel@...ts.arm.linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] [ARM] msm: make debugging UART (for DEBUG_LL)
	configurable

On Mon 2009-06-15 11:30:11, Brian Swetland wrote:
> On Mon, Jun 15, 2009 at 6:20 AM, Pavel Machek<pavel@....cz> wrote:
> > Hi!
> >
> >> Signed-off-by: Brian Swetland <swetland@...gle.com>
> >> ---
> >>  arch/arm/mach-msm/Kconfig                    |   24 ++++++++++++++++++++++++
> >>  arch/arm/mach-msm/include/mach/debug-macro.S |   25 ++++++++++++++++++-------
> >>  arch/arm/mach-msm/include/mach/msm_iomap.h   |   12 ++++++++++++
> >>  arch/arm/mach-msm/include/mach/uncompress.h  |    7 +++++++
> >>  arch/arm/mach-msm/io.c                       |    3 +++
> >>  5 files changed, 64 insertions(+), 7 deletions(-)
> >
> > I'm not sure if this is appropriate for mainline at this point. It
> > seems like few people have debug cable at this point...
> >
> >> +config MSM_DEBUG_UART
> >> +     int
> >> +     default 1 if MSM_DEBUG_UART1
> >> +     default 2 if MSM_DEBUG_UART2
> >> +     default 3 if MSM_DEBUG_UART3
> >
> > ...and those that do, have it at fixed uart, no?
> 
> Well, I'd like to support the SoC generally, not just Dream -- it's
> used in a bunch of different devices, and there's nothing that forces
> you to use UART3 everywhere (I certainly have seen some 7k hardware
> that uses UART1 as the debug serial port).

Aha, ok, I guess that should go to the changelog. (Nice bonus would be
if it was automatically/correctly set up when user selects machine
type... Actually, how does that work if you support few boards with
same kernel...?)



									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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