linux-kernel - Improve timer Resolution on imx28

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Message-Id: <1356098776-10498-1-git-send-email-torbenh@linutronix.de>
Date:	Fri, 21 Dec 2012 15:06:14 +0100
From:	Torben Hohn <torbenh@...utronix.de>
To:	Shawn Guo <shawn.guo@...aro.org>
Cc:	Russell King <linux@....linux.org.uk>,
	Mike Turquette <mturquette@...aro.org>,
	Marek Vasut <marex@...x.de>,
	Dong Aisheng <dong.aisheng@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Improve timer Resolution on imx28

Hi,

this Series increases the timer frequency and decreases min_delta_ns.
I saw pretty high max latencies with cyclictest: ~600us.

The cause was the min_delta_ns value of 0xf 32kHz clockcycles.
But with the 32kHz Clock, the period is still around 30us.
So we just increase the clock freqeuncy driving the timers
here.

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