These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / pci / altera-pcie-msi.txt

diff --git a/kernel/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt b/kernel/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
new file mode 100644 (file)
index 0000000..09cd3bc
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
@@ -0,0 +1,28 @@
+* Altera PCIe MSI controller
+
+Required properties:
+- compatible:  should contain "altr,msi-1.0"
+- reg:         specifies the physical base address of the controller and
+               the length of the memory mapped region.
+- reg-names:   must include the following entries:
+               "csr": CSR registers
+               "vector_slave": vectors slave port region
+- interrupt-parent:    interrupt source phandle.
+- interrupts:  specifies the interrupt source of the parent interrupt
+               controller. The format of the interrupt specifier depends on the
+               parent interrupt controller.
+- num-vectors: number of vectors, range 1 to 32.
+- msi-controller:      indicates that this is MSI controller node
+
+
+Example
+msi0: msi@0xFF200000 {
+       compatible = "altr,msi-1.0";
+       reg = <0xFF200000 0x00000010
+               0xFF200010 0x00000080>;
+       reg-names = "csr", "vector_slave";
+       interrupt-parent = <&hps_0_arm_gic_0>;
+       interrupts = <0 42 4>;
+       msi-controller;
+       num-vectors = <32>;
+};