[PATCH v2] PCI: add missing DT binding for linux,pci-domain property
From: Lucas Stach <l.stach@pengutronix.de>
Date: 2014-11-06 15:23:20
Also in:
linux-pci
Subsystem:
open firmware and flattened device tree bindings, pci native host bridge and endpoint drivers, pci subsystem, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Lorenzo Pieralisi, Krzysztof Wilczyński, Manivannan Sadhasivam, Bjorn Helgaas, Linus Torvalds
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> --- 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