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 e2371f5cdebe..eabcb4b5db6e 100644
--- a/Documentation/devicetree/bindings/pci/designware-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/designware-pcie.txt
@@ -18,6 +18,7 @@ Required properties:
 - interrupt-map-mask and interrupt-map: standard PCI properties
         to define the mapping of the PCIe interface to interrupt
         numbers.
+- num-lanes: number of lanes to use
 - reset-gpio: gpio pin number of power good signal
 
 Example:
@@ -41,6 +42,7 @@ SoC specific DT Entry:
                 #interrupt-cells = <1>;
                 interrupt-map-mask = <0 0 0 0>;
                 interrupt-map = <0x0 0 &gic 53>;
+                num-lanes = <4>;
         };
 
         pcie@2a0000 {
@@ -60,6 +62,7 @@ SoC specific DT Entry:
                 #interrupt-cells = <1>;
                 interrupt-map-mask = <0 0 0 0>;
                 interrupt-map = <0x0 0 &gic 56>;
+                num-lanes = <4>;
         };
 
 Board specific DT Entry: