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Date: Wed, 6 Aug 2008 19:10:51 -0600
From: "Grant Likely" <grant.likely@secretlab.ca>
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To: "Scott Wood" <scottwood@freescale.com>
Subject: Re: hang w/ppc6xx_defconfig related to 'simple-bus' compatible
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On Wed, Aug 6, 2008 at 11:35 AM, Scott Wood <scottwood@freescale.com> wrote:
> On Wed, Aug 06, 2008 at 07:41:28AM -0600, Grant Likely wrote:
>> On Tue, Aug 05, 2008 at 08:21:31AM -0500, Kumar Gala wrote:
>> > I'm trying to get the ppc6xx_defconfig booting on any 8641 (74xx/e600)
>> > system.  If I remove the 'simple-bus' compatible from the soc node in
>> > the .dts it works.  Otherwise it hangs at but and looks to be crashed in
>> > the serial driver due to accessing memory at 0.
>> >
>> > I've tried the same .dts (w/'simple-bus') using the
>> > mpc8641_hpcn_defconfig and things work.
>>
>> The Xilinx folks hit something similar.  ns16550 nodes get matched if
>> the parent claims simple-bus.  If extra stuff needs to be done to use
>> that port, then bad things happen.
>
> If extra stuff needs to be done, it shouldn't claim to be a simple-bus.

Heh, no, not the bus.  :-)  Extra stuff to use the serial device.

g.