[PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt platform

[Kumar Gala]

On Jun 29, 2012, at 11:01 AM, Scott Wood wrote:

> On 06/29/2012 10:57 AM, Kumar Gala wrote:
>> 
>> On Jun 28, 2012, at 9:36 PM, Jia Hongtao-B38951 wrote:
>> 
>>> 
>>> 
>>>> -----Original Message-----
>>>> From: Wood Scott-B07421
>>>> Sent: Friday, June 29, 2012 12:31 AM
>>>> To: Jia Hongtao-B38951
>>>> Cc: Wood Scott-B07421; galak at kernel.crashing.org; Li Yang-R58472;
>>>> agraf at suse.de; linuxppc-dev at lists.ozlabs.org
>>>> Subject: Re: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt
>>>> platform
>>>> 
>>>> On 06/27/2012 11:06 PM, Jia Hongtao-B38951 wrote:
>>>>> 
>>>>> 
>>>>>> -----Original Message-----
>>>>>> From: Wood Scott-B07421
>>>>>> Sent: Thursday, June 28, 2012 7:49 AM
>>>>>> To: galak at kernel.crashing.org
>>>>>> Cc: agraf at suse.de; linuxppc-dev at lists.ozlabs.org; Jia Hongtao-B38951
>>>>>> Subject: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt
>>>>>> platform
>>>>>> 
>>>>>> The QEMU stuff is related to the PCI refactoring because currently
>>>>>> we have a hard time selecting a primary bus under QEMU, and also
>>>> because
>>>>>> the generic qemu e500 platform wants a full list of FSL PCI
>>>> compatibles
>>>>>> to check.
>>>>>> 
>>>>> 
>>>>> It seems that not all primary bus has "isa" node like 8541 and 8555.
>>>> 
>>>> Do those boards (it's the boards that matter, not chips...) have legacy
>>>> ISA?  If they do, and it's not in the device tree, then we should fix
>>>> the device tree for consistency, but also retain some sort of hack to
>>>> remain compatible with old device trees.
>>>> 
>>>> A board can refrain from using the new common infrastructure if it has a
>>>> good reason to.
>>> 
>>> I'm not sure that MPC8541CDS (or 8555) has legacy ISA. I just checked in
>>> kernel and dts which implies the board has primary bus and no "isa" node.
>>> I will find out the facts later.
>> 
>> Pretty sure the boards have ISA, if you see the .dts has references to 'ISA bridge' & 'i8259' PIC.
> 
> OK.  How about looking for an i8259 node as well?
> 
> -Scott

Works for me, saves us having to waste time on figuring out how to update .dts for the boards.

- k