From: Laurent Pinchart <laurentp@cse-semaphore.com>
To: linuxppc-dev@ozlabs.org
Cc: Jean-Michel Hautbois <jhautbois@gmail.com>
Subject: Re: [MPC8272ADS]Can not configure the ttyCPM0
Date: Fri, 13 Mar 2009 15:00:47 +0100 [thread overview]
Message-ID: <200903131500.51446.laurentp@cse-semaphore.com> (raw)
In-Reply-To: <8cad0aa0903130638w6fab6299kcd23d92d4c2d0a8@mail.gmail.com>
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Hi Jean-Michel,
On Friday 13 March 2009 14:38:55 Jean-Michel Hautbois wrote:
> Hi all !
>
> I am currently facing a big problem on my MPC8272ADS development board.
> I have tried to use the /dev/ttyCPM1 port in order to send data over
> the serial cable to another device.
>
> This is just not working but nothing is sent, my DTR signal is down:
> > cat /proc/tty/driver/ttyCPM
>
> 0: uart:CPM UART mmio:0xF0011A00 irq:40 tx:296 rx:0 RTS|CTS|DTR|DSR|CD
> 1: uart:CPM UART mmio:0xF0011A60 irq:43 tx:0 rx:0 CTS|DSR|CD
>
> So, I have tried to use the serial port /dev/ttyCPM0. It is
> successfully sending out my bytes, but I can't configure it !!
> When I am trying to use the tcsetattr() function, I don't have any
> error, but the signal is always the same (no effect, if you prefer).
>
> I have tried to disable the kernel console output, but it is not
> working, either...
Support for the modem control lines has been added in v2.6.27-rc2. You will
need to declare the modem control lines in your device tree. See
Documentation/powerpc/dts-bindings/fsl/cpm_qe/serial.txt for more information.
Please note that hardware flow control is not supported by the CPM UART driver
yet.
Best regards,
--
Laurent Pinchart
CSE Semaphore Belgium
Waterloo Office Park
Building M
Dreve Richelle, 161
B-1410 Waterloo
Belgium
T +32 (2) 387 42 59
F +32 (2) 387 42 75
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next prev parent reply other threads:[~2009-03-13 14:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-13 13:38 [MPC8272ADS]Can not configure the ttyCPM0 Jean-Michel Hautbois
2009-03-13 14:00 ` Laurent Pinchart [this message]
2009-03-13 14:20 ` Jean-Michel Hautbois
2009-03-13 14:38 ` Laurent Pinchart
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