lkml.org 
[lkml]   [2011]   [Apr]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Subject8250 vs pxa_serial (was Re: pxa27x/spitz: serials in recent kernels)
Hi!

> > I cculd not get serial port to work in recent kernels (2.6.35 was
> > oldest I tried). I know they are little used but still very useful for
> > debugging.
> >
> > Is there some special config that needs to be done?
> >                                                        Pavel
>
> I have output on ttyS0 using the Sharp cable, never had issues.
> Remember that bootloader is 9600n8 while kernels are usually 115200n8.

Ok, I know what is going on. I need both PXA_SERIAL and 8250... and
these two don't go well together.

I tried:

CONFIG_SERIAL_8250=y
# CONFIG_SERIAL_8250_CONSOLE is not set
CONFIG_SERIAL_8250_CS=y
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=0
# CONFIG_SERIAL_8250_EXTENDED is not set

#
# Non-8250 serial port support
#
# CONFIG_SERIAL_MAX3100 is not set
# CONFIG_SERIAL_MAX3107 is not set
CONFIG_SERIAL_PXA=y
CONFIG_SERIAL_PXA_CONSOLE=y
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y

(BTW should 8250_RUNTIME_UARTS be called "boottime uarts"? That's what
help says).

...but no luck. As soon as I enable 8250, pxa serials stop working
:-(.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2011-04-12 21:43    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site