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From: Arnd Bergmann <arnd@arndb.de>
To: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
	linux-tegra@vger.kernel.org, linux-pci@vger.kernel.org,
	Grant Likely <grant.likely@secretlab.ca>,
	Rob Herring <rob.herring@calxeda.com>,
	devicetree-discuss@lists.ozlabs.org,
	Russell King <linux@arm.linux.org.uk>,
	linux-arm-kernel@lists.infradead.org,
	Colin Cross <ccross@android.com>, Olof Johansson <olof@lixom.net>,
	Stephen Warren <swarren@wwwdotorg.org>,
	Mitch Bradley <wmb@firmworks.com>
Subject: Re: [PATCH v3 10/10] ARM: tegra: pcie: Add device tree support
Date: Thu, 16 Aug 2012 07:03:50 +0000	[thread overview]
Message-ID: <201208160703.50364.arnd@arndb.de> (raw)
In-Reply-To: <20120816045539.GA17067@avionic-0098.mockup.avionic-design.de>

On Thursday 16 August 2012, Thierry Reding wrote:
> At least for the config space this is incorrect. There's a single region
> to access the configuration space for all devices below the PCIe
> controller. So it is shared by both (Tegra20) or all three (Tegra30)
> root ports.
> 
> I'm not sure about PCI domains. Do you have any good pointers as to
> where I could read up on them? If they need special hardware support,
> then I think Tegra doesn't support them either. At least I haven't come
> across any mention of domains while going through the, admittedly some-
> what sparse on PCIe, Tegra documentation.

I was referring to the same thing here: if you had a separate config
space for each root port, they would by definition be separate PCI
domain. So you don't have them.

	Arnd

  reply	other threads:[~2012-08-16  7:03 UTC|newest]

Thread overview: 79+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-26 19:55 [PATCH v3 00/10] ARM: tegra: Add PCIe device tree support Thierry Reding
2012-07-26 19:55 ` [PATCH v3 01/10] PCI: Keep pci_fixup_irqs() around after init Thierry Reding
2012-08-14  5:06   ` Bjorn Helgaas
2012-08-14  5:37     ` Thierry Reding
2012-08-15 17:06   ` Bjorn Helgaas
2012-08-15 19:28     ` Thierry Reding
2012-08-15 19:42       ` Bjorn Helgaas
2012-08-15 20:01         ` Thierry Reding
2012-09-07 16:19         ` Stephen Warren
2012-09-07 17:00           ` Thierry Reding
2012-09-07 17:22             ` Bjorn Helgaas
2012-09-14 18:55               ` Thierry Reding
2012-09-14 19:45                 ` Bjorn Helgaas
2012-07-26 19:55 ` [PATCH v3 02/10] ARM: pci: Keep pci_common_init() " Thierry Reding
2012-07-26 19:55 ` [PATCH v3 03/10] ARM: pci: Allow passing per-controller private data Thierry Reding
2012-07-26 19:55 ` [PATCH v3 04/10] ARM: tegra: Move tegra_pcie_xclk_clamp() to PMC Thierry Reding
2012-07-26 19:55 ` [PATCH v3 05/10] resource: add PCI configuration space support Thierry Reding
2012-08-14  5:00   ` Bjorn Helgaas
2012-08-14  5:55     ` Thierry Reding
2012-08-14 17:38       ` Bjorn Helgaas
2012-08-14 18:01         ` Thierry Reding
2012-08-14 21:44           ` Bjorn Helgaas
2012-08-15  6:49             ` Thierry Reding
2012-08-16 15:18               ` Stephen Warren
2012-08-16 18:27                 ` Thierry Reding
2012-07-26 19:55 ` [PATCH v3 06/10] ARM: tegra: Rewrite PCIe support as a driver Thierry Reding
2012-07-26 19:55 ` [PATCH v3 07/10] ARM: tegra: pcie: Add MSI support Thierry Reding
2012-07-26 19:55 ` [PATCH v3 08/10] of/address: Handle #address-cells > 2 specially Thierry Reding
2012-07-31 20:18   ` Rob Herring
2012-08-15 20:06     ` Thierry Reding
2012-09-07 16:24       ` Stephen Warren
2012-09-07 16:32         ` Rob Herring
2012-07-26 19:55 ` [PATCH v3 09/10] of: Add of_pci_parse_ranges() Thierry Reding
2012-07-31 20:07   ` Rob Herring
2012-08-01  6:54     ` Thierry Reding
2012-08-01 16:07       ` Stephen Warren
2012-07-26 19:55 ` [PATCH v3 10/10] ARM: tegra: pcie: Add device tree support Thierry Reding
2012-08-14 20:12   ` Thierry Reding
2012-08-14 23:50     ` Bjorn Helgaas
2012-08-15  6:37       ` Thierry Reding
2012-08-15 12:18         ` Bjorn Helgaas
2012-08-15 12:30           ` Thierry Reding
2012-08-15 14:36             ` Bjorn Helgaas
2012-08-15 14:57               ` Thierry Reding
2012-08-15 20:25                 ` Arnd Bergmann
2012-08-15 20:48                   ` Bjorn Helgaas
2012-08-16  4:55                   ` Thierry Reding
2012-08-16  7:03                     ` Arnd Bergmann [this message]
2012-08-16  7:47                       ` Thierry Reding
2012-08-16 12:15           ` Thierry Reding
2012-07-31 16:18 ` [PATCH v3 00/10] ARM: tegra: Add PCIe " Stephen Warren
2012-08-01  6:35   ` Thierry Reding
2012-08-01 17:02     ` Stephen Warren
2012-08-02  6:15       ` Thierry Reding
2012-08-06 19:42 ` Stephen Warren
2012-08-07 18:20   ` Thierry Reding
2012-08-13 17:40   ` Thierry Reding
2012-08-13 18:47     ` Stephen Warren
2012-08-13 20:33       ` Thierry Reding
2012-08-13 21:38         ` Rob Herring
2012-08-14  6:14           ` Thierry Reding
2012-08-13 23:18       ` Bjorn Helgaas
2012-08-14  6:29         ` Thierry Reding
2012-08-14 19:39         ` Stephen Warren
2012-08-14 19:58           ` Thierry Reding
2012-08-14 21:55             ` Bjorn Helgaas
2012-08-14 22:58               ` Stephen Warren
2012-08-14 23:51                 ` Stephen Warren
2012-08-15 19:04                   ` Stephen Warren
2012-08-15 20:09                     ` Thierry Reding
2012-08-15 20:11                       ` Stephen Warren
2012-08-15 20:19                         ` Thierry Reding
2012-09-07 23:34                   ` Stephen Warren
2012-09-08  0:04                     ` Russell King - ARM Linux
2012-09-08  5:53                       ` Stephen Warren
2012-09-08 17:51                       ` Bjorn Helgaas
2012-09-18  6:33                         ` Thierry Reding
2012-09-18 15:56                           ` Bjorn Helgaas
2012-08-15  0:08                 ` Bjorn Helgaas

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