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-rw-r--r--Documentation/devicetree/bindings/pci/designware-pcie.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/designware-pcie.txt b/Documentation/devicetree/bindings/pci/designware-pcie.txt
index ed0d9b9fff2b..9f4faa8e8d00 100644
--- a/Documentation/devicetree/bindings/pci/designware-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt
@@ -23,3 +23,6 @@ Required properties:
Optional properties:
- reset-gpio: gpio pin number of power good signal
+- bus-range: PCI bus numbers covered (it is recommended for new devicetrees to
+ specify this property, to keep backwards compatibility a range of 0x00-0xff
+ is assumed if not present)