From: Olof Johansson <olof@lixom.net>
To: Grant Likely <grant.likely@secretlab.ca>
Cc: Tony Lindgren <tony@atomide.com>,
Peter Barada <peterb@logicpd.com>,
Mika Westerberg <ext-mika.1.westerberg@nokia.com>,
linux-omap@vger.kernel.org
Subject: Re: Preventing OMAP3 serial driver to take control of all UARTs
Date: Wed, 2 Dec 2009 10:16:57 -0600 [thread overview]
Message-ID: <20091202161657.GA3903@lixom.net> (raw)
In-Reply-To: <fa686aa40912020804g34e1258k626349d711cfadd4@mail.gmail.com>
On Wed, Dec 02, 2009 at 09:04:49AM -0700, Grant Likely wrote:
> Ah, you're talking about pin muxing configuration, right? Yes, that
> GPIO binding deals with controllers, not pin mux. Pin mux is very
> much an SoC specific thing that isn't mapped easily to a generic
> binding.
Yep.
> On the 5200, I haven't attempted to describe pin-mux in the device
> tree at all, and have either expected firmware to set it up correctly,
> or fixed it up in the platform code.
Yeah. And it's one of the things Tony commented on that firmware tends
to get wrong, seems like people aren't doing complete mux configs in
u-boot, etc.
So, if it needs to be fixed up in platform code, there will (likely) be
need for board-specific code there anyway. A bummer, since the device
tree would otherwise make it real easy to bring up new boards without
kernel code changes.
-Olof
next prev parent reply other threads:[~2009-12-02 16:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-30 8:46 Preventing OMAP3 serial driver to take control of all UARTs Mika Westerberg
2009-11-30 16:36 ` Peter Barada
2009-11-30 17:01 ` Grant Likely
2009-11-30 19:40 ` Tony Lindgren
2009-11-30 20:31 ` Peter Barada
2009-11-30 21:09 ` Tony Lindgren
2009-12-01 11:02 ` Mika Westerberg
2009-12-09 22:43 ` Kevin Hilman
2009-12-10 10:33 ` [PATCH] OMAP3: serial - allow platforms specify which UARTs to initialize Mika Westerberg
2009-12-11 22:27 ` [APPLIED] [PATCH] OMAP3: serial - allow platforms specify which UARTs to Tony Lindgren
2009-11-30 20:52 ` Preventing OMAP3 serial driver to take control of all UARTs Tony Lindgren
2009-12-02 15:07 ` Grant Likely
2009-12-02 15:53 ` Olof Johansson
2009-12-02 16:04 ` Grant Likely
2009-12-02 16:16 ` Olof Johansson [this message]
2009-12-02 17:24 ` Grant Likely
2009-12-03 0:59 ` Tony Lindgren
2009-12-03 1:00 ` Tony Lindgren
2009-12-03 6:56 ` Mika Westerberg
2009-12-03 8:46 ` Artem Bityutskiy
2009-12-03 19:52 ` Tony Lindgren
2009-12-07 10:44 ` Mika Westerberg
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