From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from moutng.kundenserver.de ([212.227.126.187]:59980 "EHLO moutng.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751006Ab2HPHr3 (ORCPT ); Thu, 16 Aug 2012 03:47:29 -0400 Date: Thu, 16 Aug 2012 09:47:16 +0200 From: Thierry Reding To: Arnd Bergmann Cc: Bjorn Helgaas , linux-tegra@vger.kernel.org, linux-pci@vger.kernel.org, Grant Likely , Rob Herring , devicetree-discuss@lists.ozlabs.org, Russell King , linux-arm-kernel@lists.infradead.org, Colin Cross , Olof Johansson , Stephen Warren , Mitch Bradley Subject: Re: [PATCH v3 10/10] ARM: tegra: pcie: Add device tree support Message-ID: <20120816074716.GB17917@avionic-0098.mockup.avionic-design.de> References: <1343332512-28762-1-git-send-email-thierry.reding@avionic-design.de> <201208152025.25252.arnd@arndb.de> <20120816045539.GA17067@avionic-0098.mockup.avionic-design.de> <201208160703.50364.arnd@arndb.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="neYutvxvOLaeuPCA" In-Reply-To: <201208160703.50364.arnd@arndb.de> Sender: linux-pci-owner@vger.kernel.org List-ID: --neYutvxvOLaeuPCA Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Aug 16, 2012 at 07:03:50AM +0000, Arnd Bergmann wrote: > 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. > >=20 > > 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. >=20 > 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. I see, that makes sense. Thanks for explaining. Thierry --neYutvxvOLaeuPCA Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIcBAEBAgAGBQJQLKWEAAoJEN0jrNd/PrOhQsoQAKg1R4z8SJDFPgExlKdQsMqf cpKOhKyUp5q38Uy5PymdolAZakmZfcxYlFsDfykrBu8Nw4AerLhTZxwcx3Q29b0u TEvxBYt6NNYzY9H0BJWDUHphpbwcxdKrUP+5Lgp7+/fxStOAIa89RpU2uiAz7P+t XKLv0vj+4A0hvfu1l94vrjVCDMVtqzM/sc8cW/X6IO290JqMY3Jj23TsWJ5EbRrF dGuZLL+qQFpqPmwQIUf+L/9qkU6OkxuCQoco5JaRbTtchb406rAT1y7S6vVc03Ny D/pjR/tRBJWnBs+Ldd8MkFwVk8kOACdrMTYJPjSwPcK4V3/jwAq+mjClUZNHtiEF Yhqt/adO03YILnuvvQTdReYr10obzOHcg/GRM50HwxC3spKbvjy/z1oiJyvR19K5 nkxw6vkpUob83ahByAIb5v2K3jA74/k2vbL03QhMvYl7Y6xYlbOey8JVu5zrRfQP l8yG+W8m1NC5/VOIl//b02KkhXp31/r5PKcblxujXrl2dtDHXOP+FQv33zPNQqft gj+YF2EFVXvQ8VxuH6G+NImX2tYCynbiM14ozzNUYtTUbqGyIci97qEvuUyMpehl kSFkIg5N1BWNYEf2eD3aP2XUvOk0lLHhlV52EJL39I4A0LdTn9/Fy0Az6kEBYyEG euUsJVvaWofo0+rxQvDq =Ew59 -----END PGP SIGNATURE----- --neYutvxvOLaeuPCA--