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Subject: Re: [RFC PATCH 1/1] powerpc/embedded6xx: Add support for
 Motorola/Emerson MVME5100.
From: Scott Wood <scottwood@freescale.com>
To: Stephen N Chivers <schivers@csc.com.au>
Date: Mon, 19 Aug 2013 19:44:31 -0500
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Cc: Chris Proctor <cproctor@csc.com.au>, linuxppc-dev@lists.ozlabs.org,
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On Mon, 2013-08-19 at 07:58 +1100, Stephen N Chivers wrote:
> The serial console setup in 'legacy_serial' does not support reg-shift
> or reg-offset properties and so a preferred_console is not added by it.
> The DTS file for the board does specify the register shift so that
> 'of_serial' will correctly setup the UARTS. But that is too late, the
> preferred console will be tty0 as the .config derived from 
> ppc6xx_defconfig
> has CONF_VT_CONSOLE set. In the test kernels I have built 'con_init' in
> the VT support is always called before serial8250_console_init.

Are you setting console=ttyS0,<baud> on the kernel command line?

> I did try modifying legacy_serial to correctly support the tsi-bridge
> UARTS and add the preferred console but encountered even more problems
> in 8250_core when registering the serial console (to the point of
> having a silently panic'ing kernel).
> 
> So I think for the moment, the board will need its own default config.

Which config symbol is relevant here?

-Scott