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-rw-r--r--dts/Bindings/pci/designware-pcie.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/dts/Bindings/pci/designware-pcie.txt b/dts/Bindings/pci/designware-pcie.txt
index 6c5322c554..1392c705ce 100644
--- a/dts/Bindings/pci/designware-pcie.txt
+++ b/dts/Bindings/pci/designware-pcie.txt
@@ -17,6 +17,8 @@ Required properties:
- num-lanes: number of lanes to use
Optional properties:
+- num-viewport: number of view ports configured in hardware. If a platform
+ does not specify it, the driver assumes 2.
- num-lanes: number of lanes to use (this property should be specified unless
the link is brought already up in BIOS)
- reset-gpio: gpio pin number of power good signal
@@ -44,4 +46,5 @@ Example configuration:
interrupts = <25>, <24>;
#interrupt-cells = <1>;
num-lanes = <1>;
+ num-viewport = <3>;
};