Re: [PATCH v2] PCI: add missing DT binding for linux,pci-domain property

[Bjorn Helgaas <bhelgaas@google.com>]

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!

> ---
> 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
>