Bosko Radivojevic wrote:
> On Dec 26, 2007 12:10 PM, Michael Trimarchi <[EMAIL PROTECTED]>
> wrote:
>
> > Hi
> > ----- Messaggio originale -----
> > > Da: Gilles Chanteperdrix <[EMAIL PROTECTED]>
> > > A: Michael Trimarchi <[EMAIL PROTECTED]>
> > > Cc: [email protected]
> > > Inviato: Mercoledì 26 dicembre 2007, 6:59:31
> > > Oggetto: Re: [Adeos-main] at91sam9260
> > >
> > > On Dec 20, 2007 7:44 PM, Michael Trimarchi wrote:
> > > > Hi,
> > > >
> > > > > Ok. Could you try something ? It will work with I-pipe only but will
> > > > > break Xenomai, so do not try to run Xenomai over this modification.
> > > > >
> > > >
> > > > I tried the adeos-2.6.20-arm-1.8-02 patch and linux 2.6.20 and I
> > obtained the
> > > > same results. When the system is not loaded I can't receive from the
> > serial
> > > > line using the adeos patch and null modem cable.
> > > >
> > > > AT91sam9260 8MB ram (using filesystem on ramdisk)
> > > > I removed spi flash support, mmc support.
> > > > I have only serial driver and using lrz for receiving file
> > > >
> > > > Can I do some tests for you using my board?
> > >
> > > in drivers/serial/atmel_serial.c, add the IRQF_DISABLED flag to
> > request_irq.
> > >
> > > When linux is running without adeos, the AT91 serial driver interrupt
> > > is shared with the timer interrupt, so it automatically gets this
> > > flag. Adeos does not use the same hardware timer as linux, so, when
> > > adeos is enabled the serial interrupt is no longer shared with the
> > > timer interrupt and it no longer gets this flag.
> > >
> > I will try.
> >
> Hi all!
>
> Are there some conclusions or test reports regarding this discussion?
>
> Thanx!
I received a mail from Michael recently telling me that he observes the
same behaviour with the PREEMPT_RT patch, so the I-pipe patch is
probably out of cause. He now suspects a hardware issue (one serial port
pin seems to be shared with another peripheral, as I think I understood).
--
Gilles Chanteperdrix.
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