From: Kumar Gala <galak@codeaurora.org>
To: Grant Likely <grant.likely@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>, Liviu Dudau <Liviu.Dudau@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Rob Herring <robherring2@gmail.com>,
Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Kishon Vijay Abraham I <kishon@ti.com>
Subject: Re: [PATCH 1/2] pci: Add IORESOURCE_BIT entry for PCIe ECAM resources.
Date: Mon, 2 Jun 2014 10:40:30 -0500 [thread overview]
Message-ID: <390B3F94-C058-47D6-82CE-0393E60014FF@codeaurora.org> (raw)
In-Reply-To: <20140602150945.964D4C40381@trevor.secretlab.ca>
On Jun 2, 2014, at 10:09 AM, Grant Likely <grant.likely@linaro.org> wrote:
> On Sat, 31 May 2014 20:41:04 +0200, Arnd Bergmann <arnd@arndb.de> wrote:
>> On Saturday 31 May 2014 01:36:40 Liviu Dudau wrote:
>>> We would like to be able to describe PCIe ECAM resources as
>>> IORESOURCE_MEM blocks while distinguish them from standard
>>> memory resources. Add an IORESOURCE_BIT entry for this case.
>>>
>>> Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
>>
>> I still don't see any value in this at all. What is the advantage
>> of doing this opposed to just having a standardized 'reg' property
>> for a particular compatible string?
>
> I'm inclined to agree. It doesn't seem appropriate to put config space
> in ranges, and the host controller binding is responsible for
> identifying how config space is memory mapped.
>
> g.
I don’t agree when it comes to ECAM, but we can drop this for now until someone really does that.
However, what do we do with the 2 cases that exist in upstream that are using ranges for cfg space?
- k
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2014-06-02 15:40 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-29 16:03 [PATCH] of: treat PCI config space as IORESOURCE_MEM type Kumar Gala
2014-05-29 20:44 ` Rob Herring
2014-05-29 20:51 ` Kumar Gala
2014-05-29 21:50 ` Rob Herring
2014-05-30 0:56 ` Liviu Dudau
2014-05-30 1:29 ` Bjorn Helgaas
2014-05-30 1:41 ` Liviu Dudau
2014-05-30 20:37 ` Jason Gunthorpe
2014-05-30 20:44 ` Kumar Gala
2014-05-30 20:45 ` Kumar Gala
2014-05-30 23:11 ` Liviu Dudau
2014-05-30 23:16 ` Bjorn Helgaas
2014-05-30 23:30 ` Liviu Dudau
2014-05-31 0:36 ` Liviu Dudau
2014-05-31 0:36 ` [PATCH 1/2] pci: Add IORESOURCE_BIT entry for PCIe ECAM resources Liviu Dudau
2014-05-31 18:41 ` Arnd Bergmann
2014-06-01 11:26 ` Liviu Dudau
2014-06-02 15:09 ` Grant Likely
2014-06-02 15:40 ` Kumar Gala [this message]
2014-06-02 16:23 ` Grant Likely
2014-06-02 18:09 ` Kumar Gala
2014-06-02 19:15 ` Arnd Bergmann
2014-06-02 20:43 ` Kumar Gala
2014-06-02 20:44 ` Arnd Bergmann
2014-06-03 8:44 ` Grant Likely
2014-06-03 9:21 ` Arnd Bergmann
2014-06-03 11:38 ` Grant Likely
2014-05-31 0:36 ` [PATCH 2/2] of: treat PCI config space as IORESOURCE_MEM type with special flags Liviu Dudau
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