Provide a way for the firmware to tell the OS about the GPIO that can be
used to get the Hot-Plug and Unplug events.
Signed-off-by: Vidya Sagar <vidyas@xxxxxxxxxx>
---
Documentation/devicetree/bindings/pci/pci.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt
index 6a8f2874a24d..7b89bddc8dde 100644
--- a/Documentation/devicetree/bindings/pci/pci.txt
+++ b/Documentation/devicetree/bindings/pci/pci.txt
@@ -32,6 +32,10 @@ driver implementation may support the following properties:
root port to downstream device and host bridge drivers can do programming
which depends on CLKREQ signal existence. For example, programming root port
not to advertise ASPM L1 Sub-States support if there is no CLKREQ signal.
+- hotplug-gpios:
+ If present this property specifies the GPIO to be used for Hot-Plug/Unplug
+ functionality. It is used by the PCIe GPIO Hot-Plug core driver for
+ PCIe device Hot-Plug/Unplug events.
PCI-PCI Bridge properties
-------------------------
--
2.17.1
