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Commit 2801f725 authored by Lucas Stach's avatar Lucas Stach Committed by Bjorn Helgaas
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PCI: Add missing DT binding for "linux,pci-domain" property 



41e5c0f8 ("of/pci: Add pci_get_new_domain_nr() and
of_get_pci_domain_nr()") added parsing of the "linux,pci-domain" property,
but didn't add the binding documentation.

Since this property will be supported by a number of host bridge drivers,
add it to the common PCI binding doc.

Fixes: 41e5c0f8 ("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()")
Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarLiviu Dudau <Liviu.Dudau@arm.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
parent 336b5be2

Documentation/devicetree/bindings/pci/pci.txt

+11 −0
Original line number Diff line number Diff line
@@ -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.