From: s.hauer@pengutronix.de (Sascha Hauer)
To: linux-arm-kernel@lists.infradead.org
Subject: mxc: i2c register mapped twice?
Date: Thu, 6 Jan 2011 14:40:53 +0100 [thread overview]
Message-ID: <20110106134053.GC26617@pengutronix.de> (raw)
In-Reply-To: <20110106122611.GA31718@shlinux1.ap.freescale.net>
On Thu, Jan 06, 2011 at 08:26:12PM +0800, Richard Zhao wrote:
> Hi Sascha,
>
> I just realized i2c registers are mapped twice. It's first static mapped at
> mx5x_io_desc and second mapped in driver.
> Drivers always feel happy to receive physical address in resource, and ioremap
> it itself. We might static map too many register regions in machine level?
> I'm sure it's not just i2c.
There are some devices which use the static mappings, like watchdog (for
reset), irq controller, gpt. Otherwise you are right. Feel free to cleanup
here if you think there are unnecessary mappings.
Sascha
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next prev parent reply other threads:[~2011-01-06 13:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-06 12:26 mxc: i2c register mapped twice? Richard Zhao
2011-01-06 13:40 ` Sascha Hauer [this message]
2011-01-07 1:31 ` Ben Dooks
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