From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:53283 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751173AbaKFPXb (ORCPT ); Thu, 6 Nov 2014 10:23:31 -0500 From: Lucas Stach To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala Cc: devicetree@vger.kernel.org, Bjorn Helgaas , linux-pci@vger.kernel.org, Liviu Dudau , Arnd Bergmann Subject: [PATCH v2] PCI: add missing DT binding for linux,pci-domain property Date: Thu, 6 Nov 2014 16:23:20 +0100 Message-Id: <1415287400-30426-1-git-send-email-l.stach@pengutronix.de> Sender: linux-pci-owner@vger.kernel.org List-ID: This property was added by 41e5c0f81d3e (of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()) without the required binding documentation. As this property will be supported by a number of host bridge drivers going forward, add it to the common PCI binding doc. Signed-off-by: Lucas Stach --- This is a non-critical fix, but may still qualify for 3.18-rc as the property was added in this release cycle. v2: - emphasize that the property must be present and unique systemwide if used --- Documentation/devicetree/bindings/pci/pci.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt index 41aeed38926d..68c364e2f5e5 100644 --- a/Documentation/devicetree/bindings/pci/pci.txt +++ b/Documentation/devicetree/bindings/pci/pci.txt @@ -7,3 +7,14 @@ And for the interrupt mapping part: Open Firmware Recommended Practice: Interrupt Mapping http://www.openfirmware.org/1275/practice/imap/imap0_9d.pdf + +Additionally to the properties specified in the above standards a host bridge +driver implementation may support the following properties: + +- linux,pci-domain: + If present this property assigns a fixed PCI domain number to a host bridge, + otherwise an unstable (across boots) unique number will be assigned. + It is required to either not set this property at all or set it for all + host bridges in the system, otherwise potentially conflicting domain numbers + may be assigned to root buses behind different host bridges. The domain + number for each host bridge in the system must be unique. -- 2.1.1