Re: [PATCH v2] PCI: add missing DT binding for linux,pci-domain property
From: Bjorn Helgaas <bhelgaas@google.com>
Date: 2014-11-13 17:09:21
Also in:
linux-pci
On Thu, Nov 06, 2014 at 04:23:20PM +0100, Lucas Stach wrote:
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 <l.stach@pengutronix.de>
Applied with acks from Liviu and Rob to for-linus for v3.18, thanks a lot for working this out!
quoted hunk ↗ jump to hunk
--- 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