Add device tree bindings for PCI endpoint NTB function device.
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
.../bindings/pci/endpoint/pci-epf-ntb.txt | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/endpoint/pci-epf-ntb.txt
diff --git a/Documentation/devicetree/bindings/pci/endpoint/pci-epf-ntb.txt b/Documentation/devicetree/bindings/pci/endpoint/pci-epf-ntb.txt
new file mode 100644
index 000000000000..e7896932423e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/endpoint/pci-epf-ntb.txt
@@ -0,0 +1,31 @@
+PCI Endpoint NTB Function Device
+
+This describes the bindings to be used when a NTB device has to be
+exposed to the remote host over PCIe.
+
+Required Properties:
+ - compatible: Should be "pci-epf-ntb"
+ - epcs: As defined in generic pci-epf bindings defined in pci-epf.txt
+ - epc-names: As defined in generic pci-epf bindings defined in pci-epf.txt
+ - vendor-id: As defined in generic pci-epf bindings defined in pci-epf.txt
+ - device-id: As defined in generic pci-epf bindings defined in pci-epf.txt
+ - num-mws: Specify the number of memory windows. Should not be more than 4.
+ - mws-size: List of 'num-mws' entries containing size of each memory window.
+
+Optional Properties:
+ - spad-count: Specify the number of scratchpad registers to be supported
+ - db-count: Specify the number of doorbell interrupts to be supported. Must
+ not be greater than 32.
+
+Example:
+Following is an example of NTB device exposed to the remote host.
+
+ntb {
+ compatible = "pci-epf-ntb";
+ epcs = <&pcie0_ep>, <&pcie1_ep>;
+ epc-names = "primary", "secondary";
+ vendor-id = /bits/ 16 <0x104c>;
+ device-id = /bits/ 16 <0xb00d>;
+ num-mws = <4>;
+ mws-size = <0x100000>, <0x100000>, <0x100000>, <0x100000>;
+};
--
2.17.1
