From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 25 Jun 2014 19:13:29 +0200 From: Maxime Ripard Message-ID: <20140625171329.GC19569@lukather> References: <20140610095422.GK9791@lukather> <5396D780.4020704@xenomai.org> <20140611092532.GE4254@lukather> <53989CEF.3080205@xenomai.org> <20140612075401.GH4254@lukather> <539966B7.3080900@xenomai.org> <20140612150313.GA3448@lukather> <539B4A85.7030302@xenomai.org> <20140623140559.GE19730@lukather> <53A8BBD6.3020701@xenomai.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <53A8BBD6.3020701@xenomai.org> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai] Xenomai on Atmel SAMA5D3 with a 3.14 kernel List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gilles Chanteperdrix Cc: Michael Opdenacker , Thomas Petazzoni , Boris Brezillon , Alexandre Belloni , xenomai@xenomai.org, Antoine =?iso-8859-1?Q?T=E9nart?= On Tue, Jun 24, 2014 at 01:44:22AM +0200, Gilles Chanteperdrix wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 06/23/2014 04:05 PM, Maxime Ripard wrote: > > On Fri, Jun 13, 2014 at 09:01:25PM +0200, Gilles Chanteperdrix > > wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > >> > >> On 06/12/2014 05:03 PM, Maxime Ripard wrote: > >>> On Thu, Jun 12, 2014 at 10:37:11AM +0200, Gilles Chanteperdrix > >>> wrote: > >>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > >>>> > >>>> On 06/12/2014 09:54 AM, Maxime Ripard wrote: > >>>>> On Wed, Jun 11, 2014 at 08:16:15PM +0200, Gilles > >>>>> Chanteperdrix wrote: > >>>>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 > >>>>>> > >>>>>> On 06/11/2014 11:25 AM, Maxime Ripard wrote: > >>>>>>> On Tue, Jun 10, 2014 at 12:01:36PM +0200, Gilles > >>>>>>> Chanteperdrix wrote: > >>>>>>>> If you compile the kernel without I-pipe and Xenomai > >>>>>>>> support and enable the tcb_clksrc clocksource driver > >>>>>>>> does it work? > >>>>>>> > >>>>>>> Yep, with the exact same config, except for > >>>>>>> CONFIG_IPIPE and CONFIG_XENOMAI being disabled, it > >>>>>>> boots fine. > >>>>>>> > >>>>>> Read again, I am not insterested in exactly the same > >>>>>> config, I am interested in the a config with tcb_clksrc > >>>>>> clocksource, which is disabled by CONFIG_IPIPE. Only if > >>>>>> you enable this clocksource do you get to use the > >>>>>> atmel_tclib code. > >>>>> > >>>>> Let me rephrase then. It works with the exact same config, > >>>>> with CONFIG_IPIPE and CONFIG_XENOMAI disabled, and > >>>>> CONFIG_ATMEL_TCB_CLKSRC enabled. > >>>> > >>>> Then I would tend to think that the clocksource is not your > >>>> problem and repeat that you should check everything else in > >>>> the porting guide. > >>> > >>> Ok. I will. > >>> > >> Looking rapidly at the code, at least the irq controller and pic > >> muting need fixing. > > > > Ok, so, a bit of news on this one. > > > > After fixing the irq controller to work on the AIC5, and disabling > > the pic muting, I get almost 100% of the time a system freeze when > > running: > > http://git.free-electrons.com/training-materials/tree/lab-data/realtime/rttest/data/rttest.c > > > > The TCB timer is still ticking, at a rate around 1Hz, while, when > > the system hangs, the PIT interrupt isn't firing anymore (which > > explains the freeze). So there's probably something wrong related > > to the ipipe I guess, or the interrupt being masked and not > > unmasked at some point. > > Well: > - - the existing at91 I test also use a PIT and they do not hang > - - if you disabled the pic muting, noone is disabling the PIT interrupt. > > So, I would suggest looking carefully at the sama5 code. Ok, that's good to know. I'll look a bit more at this and what we did for the AIC5 then. Thanks again! Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: