From: torbenh@linutronix.de (Torben Hohn)
To: linux-arm-kernel@lists.infradead.org
Subject: Improve timer Resolution on imx28
Date: Fri, 21 Dec 2012 15:06:14 +0100 [thread overview]
Message-ID: <1356098776-10498-1-git-send-email-torbenh@linutronix.de> (raw)
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.
next reply other threads:[~2012-12-21 14:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-21 14:06 Torben Hohn [this message]
2012-12-21 14:06 ` [PATCH 1/2] mxs timer: use ahbx bus clock to drive the timers on timrotv2 Torben Hohn
2012-12-25 14:10 ` Shawn Guo
2012-12-21 14:06 ` [PATCH 2/2] mxs timer: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles Torben Hohn
2012-12-21 14:52 ` Improve timer Resolution on imx28 Marek Vasut
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