From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id ADA33100985 for ; Sat, 30 Jun 2012 02:04:27 +1000 (EST) Subject: Re: [PATCH 0/3] powerpc/fsl: PCI refactoring and QEMU paravirt platform Mime-Version: 1.0 (Apple Message framework v1278) Content-Type: text/plain; charset=us-ascii From: Kumar Gala In-Reply-To: <4FEDD15E.10706@freescale.com> Date: Fri, 29 Jun 2012 11:04:25 -0500 Message-Id: References: <20120627234851.GA9071@tyr.buserror.net> <412C8208B4A0464FA894C5F0C278CD5D01A10EAB@039-SN1MPN1-002.039d.mgd.msft.net> <4FEC86CC.90307@freescale.com> <412C8208B4A0464FA894C5F0C278CD5D01A13620@039-SN1MPN1-002.039d.mgd.msft.net> <34D617F2-54CD-46DA-A110-E44CE081B99B@kernel.crashing.org> <4FEDD15E.10706@freescale.com> To: Scott Wood Cc: Wood Scott-B07421 , "agraf@suse.de" , "linuxppc-dev@lists.ozlabs.org" , Li Yang-R58472 , Jia Hongtao-B38951 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Jun 29, 2012, at 11:01 AM, Scott Wood wrote: > On 06/29/2012 10:57 AM, Kumar Gala wrote: >>=20 >> On Jun 28, 2012, at 9:36 PM, Jia Hongtao-B38951 wrote: >>=20 >>>=20 >>>=20 >>>> -----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 >>>> platform >>>>=20 >>>> On 06/27/2012 11:06 PM, Jia Hongtao-B38951 wrote: >>>>>=20 >>>>>=20 >>>>>> -----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 >>>>>> 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 >>>>>> the generic qemu e500 platform wants a full list of FSL PCI >>>> compatibles >>>>>> 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 >>>> 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 >>>> 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. >>=20 >> Pretty sure the boards have ISA, if you see the .dts has references = to 'ISA bridge' & 'i8259' PIC. >=20 > OK. How about looking for an i8259 node as well? >=20 > -Scott Works for me, saves us having to waste time on figuring out how to = update .dts for the boards. - k