On Jun 28, 2012, at 9:36 PM, Jia Hongtao-B38951 wrote:

=20
=20

quoted

-----Original Message-----
From: Wood Scott-B07421
Sent: Friday, June 29, 2012 12:31 AM
To: Jia Hongtao-B38951
Cc: Wood Scott-B07421; galak@kernel.crashing.org; Li Yang-R58472;
agraf@suse.de; linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU =

paravirt

quoted

platform
=20
On 06/27/2012 11:06 PM, Jia Hongtao-B38951 wrote:

quoted

=20
=20

quoted

-----Original Message-----
From: Wood Scott-B07421
Sent: Thursday, June 28, 2012 7:49 AM
To: galak@kernel.crashing.org
Cc: agraf@suse.de; linuxppc-dev@lists.ozlabs.org; Jia =

Hongtao-B38951

quoted

quoted

quoted

Subject: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt
platform
=20
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

quoted

quoted

the generic qemu e500 platform wants a full list of FSL PCI

compatibles

quoted

quoted

to check.
=20

=20
It seems that not all primary bus has "isa" node like 8541 and 8555.

=20
Do those boards (it's the boards that matter, not chips...) have =

legacy

quoted

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.
=20
A board can refrain from using the new common infrastructure if it =

has a

quoted

good reason to.

=20
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.

- k