From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Ralf Roesch <xenomai@cantastic.org>,
"xenomai@xenomai.org" <xenomai@xenomai.org>
Subject: Re: [Xenomai] Testing on Freescale i.MX6
Date: Sun, 04 May 2014 17:57:55 +0200 [thread overview]
Message-ID: <53666383.9010302@xenomai.org> (raw)
In-Reply-To: <53661901.8090400@cantastic.org>
On 05/04/2014 12:40 PM, Ralf Roesch wrote:
> Hi,
>
> based on your suggestions from thread "[Xenomai] ipipe-core-3.10 patch
> for arm"
> I started testing Xenomai on an i.MX6 board [1].
>
> * checked out branch imx_3.10.17_1.0.0_ga from linux-2.6-imx.git [2]
> * merged vanilla v3.10.32 tag
> resolved 3 conflicts:
> drivers/net/can/flexcan.c
> drivers/usb/host/ehci.h
> sound/soc/codecs/wm8962.c
> * applied ipipe-v3.10.32.patch
> resolved 4 conflicts:
> arch/arm/mach-imx/clk-imx6q.c
> arch/arm/mach-imx/mach-imx6q.c
> arch/arm/mach-imx/mm-imx27.c
> arch/arm/mach-imx/mm-imx3.c
> * applied xenomai-2.6 support (prepare-kernel.sh)
>
> My box boots without errors and seems to be quiet stable at the first
> glance.
> Linux arm 3.10.32-xenomai-armv7-x1 #24 SMP Sun May 4 12:17:10 CEST 2014
> armv7l GNU/Linux
>
> The first thing I observed is a system time problem:
> the RTC and system time clocks get out of phase very quickly.
> I do compare the timers (end - start) on console by calling:
> - hwclock && date (start)
> - wait an hour or more
> - hwclock && date (end)
> The hwclock time is always o.k. but the system time reported by date is
> roughly 25% faster.
> Do you have an idea what could go wrong here?
The timer frequency. Did you not forget to disable CONFIG_CPU_FREQ? Do
you have the same issue without the I-pipe patch?
--
Gilles.
next prev parent reply other threads:[~2014-05-04 15:57 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-04 10:40 [Xenomai] Testing on Freescale i.MX6 Ralf Roesch
2014-05-04 15:57 ` Gilles Chanteperdrix [this message]
2014-05-05 7:45 ` Ralf Roesch
2014-05-05 10:51 ` Gilles Chanteperdrix
2014-05-05 11:28 ` Ralf Roesch
2014-05-05 11:44 ` Gilles Chanteperdrix
2014-05-07 17:20 ` Ralf Rösch
2014-05-07 17:54 ` Gilles Chanteperdrix
-- strict thread matches above, loose matches on Subject: below --
2014-05-07 19:09 Paul S.
2014-05-07 20:45 ` Ralf Roesch
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